Aephraim M. Steinberg

Professional cat-herder (and part-time physicist)

Experimental laser cooling, quantum optics, and quantum information

Office: MP 1103
Telephone: (416) 978-0713
Fax: (416) 978-2537
Labs: MP 054/056
Telephone: (416) 946-3162
e-mail: steinberg at physics.utoronto.ca

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B.S., Yale University (1988); Research Assistant, Ecole Normale Supérieure, Paris (1989); Ph.D., U.C. Berkeley (1994); Chateaubriand Fellow, Université de Paris VI (1994); NRC Fellow, National Institute of Standards and Technology (1995-96); Asst. Prof., University of Toronto (1996-2001); Polanyi Prize, 1997; PREA award, 1999; Assoc. Prof., U of T (2001-2005); Gastprofessor, Univ. of Vienna (Fall 2003); Chercheur invité, Institut d'Optique, Orsay (Spring 2004); Full Prof., University of Toronto (2005-); CAP Herzberg Medal, 2006; RSC Rutherford Medal, 2006; McLean Fellow, 2007; Steacie Fellow, 2007; Fellow of the Optical Society of America, the American Physical Society, the Institute of Physics (UK) and the Canadian Institute for Advanced Research; Visiting Scholar, Univ. of Queensland (Nov 2008 - Feb 2009).
Click here for scientific genealogy
Click here for academic ontogeny

Some miscellaneous news (see also recent publications!) :

Alain Aspect awards the inaugural John Stewart Bell Prize to Nicolas Gisin on behalf of the CQIQC in August 2009!

(if you use a Microsoft product and it can't follow the above link, click here to see the full webcast of the presentation and Gisin's talk on "Quantum Nonlocality: How does Nature perform the trick?!?")

Jeff's weak-measurement paper inspires this article in the Toronto Star, which goes a long way towards making Hardy's Paradox accessible through pithy (if not always accurate) observations like "Perhaps anti-photons are the smallest particles of darkness, and if you put a lot of them together you get a black hole or some other matter-destroying device. For example, Bernie Madoff. Anyway, photons apparently go around in pairs due to a process called Quantum Entanglement, which I think is like a dating service for very small (and presumably lonely) particles."

March 5th: Jeff's weak-measurement paper is discussed in this article in The Economist!

Jeff's paper on using experimental joint weak measurements to resolve Hardy's Paradox has appeared in Phys. Rev. Lett. 102, 020404 (2009).
Here is a lay description of our work on Hardy's Paradox.

Krister and Rob's paper on triphoton tomography has appeared in Nature 457, 67 (2009).

Mapping a New World For Light: The scientific revolution is often dated back to Copernicus's model of the solar system and before that, the re-recognition by the Western world that the Earth is round. Yet in the strange domain of quantum physics, scientists have once more been studying a flat world for the past several years. Our latest result, published in Nature on January 1st, 2009, has now shown what riches can be found by circumnavigating the quantum globe.

Rob and Pete's theory paper on tomography of practically indistinguishable systems has appeared in Phys. Rev. A

Chinese test two missiles at Mt. St.-Louis in Ontario

Samansa's paper on pulse echoes in the optical lattice has been selected for publication in the Virtual Journal of Nanoscale Science & Technology, as well as the Virtual Journal of Quantum Information.

Max & Rob's article on nonorthogonal-state discrimination, Phys Rev A 76, 062314 (2007), was selected for the Virtual Journal of Quantum Information.

"Two Slits Are Better Than One!" at sciencebase.com describes our recent experiment on the complementarity principle (see also New J. Phys. 9 (2007) 287 for our article). Our paper is also the "featured journal article" in the Sep 2007 edition of PhysicsWorld.com

Breaking News: Relativity Still Correct! Photon tunneling hits the news again every 5 or 10 years, as those who would over-dramatize it hope for more and more of the voices of reason to get tired of commenting on the same experiments (e.g. my 1994 thesis). New Scientist covers the latest hype in the August 17, 2007 issue, also picked up by photonics.com and many media outlets which were too gullible to be cited here :-)
[Here I'll point out that even the relatively (no pun intended) even-handed coverage quoted me as saying "it's just a matter of interpretation," where what I am rather sure I said was "I take no issue with their experimental results, only with their interpretation." What I meant of course is that their interpretation is wrong: not that one is free to interpret their experiment as violating relativity or not!]

Older news & links appear below

Group members

(For some old group photos, scroll down to Reza's photos, and for a more recent one courtesy of Big Brother, click here!)
The trick of being a quantum information scientist is to control a system without seeing what you're doing (since any observation would disturb the system.)
We are always looking for bright students and postdocs who are excited about probing the fundamental issues in quantum mechanics as well as investigating the possibilities for new technologies based on novel quantum effects.
A list of our present and past group members can be found below, with some links.

Research

Our main interests are in fundamental quantum-mechanical phenomena,, and particularly quantum information processing and the control & characterization of the quantum states of systems ranging from laser-cooled atoms to individual photons. We are members of the Quantum Optics Group at U of T, of the Center for Quantum Information and Quantum Control (CQIQC), and of IOS, the new Institute for Optical Sciences. I am also a Fellow in the Quantum Information Processing programme of the Canadian Institute for Advanced Research and an affiliate member of the Perimeter Institute for Theoretical Physics.
Our projects are supported by NSERC, by QuantumWorks, by the Canadian Institute for Photonics Innovations, and by Photonics Research Ontario. We have also enjoyed support from DARPA, CFI, PREA, and ORDCF at various times.

Our experimental program is two-pronged, using both nonclassical two-photon interference and laser-cooled atoms to study issues such as quantum information & computation, decoherence and the quantum-classical boundary, tunneling times, weak measurement & retrodiction in quantum mechanics, and the control and characterisation of novel quantum states. For more information, scroll down to a text description of our present research topics and partial reverse-chronological list of publications, or click on one of the following pictures to access more details about some of our research areas.

Some sorted links to selections of our papers & talks:

Some general overviews of our research, quantum info, and problems in quantum measurement

Optical lattices (& quantum chaos, quantum control,...)
Entangled photons (& quantum information)

Quantum measurement
Bose-Einstein condensation (& atom tunneling)

Research projects

Specific projects of interest at the present time include:

Characterisation and control of coherence of ultracold atoms

Cold atoms trapped in optical potentials can be used to store quantum information in the discrete energy levels of their centre-of-mass oscillations. Groups around the world are studying using such optical lattices for quantum information, and one of the biggest stumbling blocks is likely to be the poorly-understood nature of the loss of quantum coherence.

Investigating decoherence mechanisms

Developing pulse-echo and other error-control techniques

Implementing quantum control of quantum chaos

Studying the possibility of spontaneous coherence induced by tunneling

Quantum measurement and quantum information with entangled photon pairs

We have several systems for the generation of pairs of photons with strong quantum correlations, and work on the development of newer, more powerful sources as well. Such pairs have been the workhorse of most tests of quantum nonlocality, and at the heart of many proposals for quantum cryptography and computation.

How much does quantum mechanics allow one to conclude from measurements about past (unmeasured) events? Can one particle be in two places at the same time?

How can our recently developed "two-photon switch" be used in quantum-information applications?

How can one generate entangled states of 3 or 4 photons, and to what end?

How can one most fully characterize the evolution of a two-photon quantum system, and use this characterisation to develop error-correction methods?

Linear-optics for quantum information

Many quantum-information tasks can be carried out using single photons in linear optical interferometers. While not on their own scalable, in the computer-science sense of the term, these systems could be crucial, at the few-qubit level, for near-term implementations of secure quantum communications links.

How well can generalized quantum measurements ("POVMs") be used to enhance our ability to distinguish between imperfectly distinguishable states? How can this be applied to quantum communications and other interesting tasks?

Can linear-optical quantum computing be practically extended to 3 or 4 or 5 qubits, and applied to interesting communications tasks?

Bose-Einstein condensation (BEC)

Since the first demonstration in 1995 of the Bose-Einstein condensation of trapped alkali atoms below one one-millionth of a degree above absolute zero, dozens of groups worldwide have set up similar systems. We believe that such a revolutionary source of atoms will play a role in future atomic-physics research akin to that played over the past 40 years in optics by the invention of the laser.

We first generated BEC of 87Rb in a TOP trap in March, 2005.
We are currently studying atom interference patterns generated by collisions of Bose-condensed atoms with optical barriers. We have also developed a dipole trap in order to study condensate collisions in a truly 1-dimensional geometry. In addition to studies of quantum scattering and tunneling times (see below), we are investigating the application of these geometries to the performance of quantum state tomography on expanding degenerate Bose gases.
What truly quantum (beyond-mean-field) effects have observable signatures in the finite-temperature quantum hydrodynamics of this system?
Application of this coherent atom source to novel atom-optics experiments, notably to study the question of what happens when you try to observe a tunneling particle in the "forbidden" region. How long does tunneling take? Where is the particle while it tunnels? What is the impact of measurement or decoherence on these issues?
Further studies of quantum chaos and other features of time-dependent potentials using this "atom laser"-like source.

For more information, feel free to download the papers and/or talks listed below, or to contact us directly.

(For an older publication list, with several links, go here)

SOME (MORE OR LESS) RECENT PAPERS

Improving Quantum State Estimation with Mutually Unbiased Bases, R.B.A. Adamson and A.M. Steinberg, submitted to Phys. Rev. Lett.

Matchgate quantum computing, S. Ramelow, A. Fedrizzi, A.M. Steinberg, and A.G. White, submitted to Phys. Rev. Lett.

Experimental joint weak measurement on a photon pair as a probe of Hardy's Paradox, J.S. Lundeen and A.M. Steinberg, Phys. Rev. Lett. 102, 020404 (2009).

Squeezing and over-squeezing of triphotons, L.K. Shalm, R.B.A. Adamson, and A.M. Steinberg, Nature 457, 67 (2009).

Bright filter-free source of indistinguishable photon pairs, F. Wolfgramm, X. Xing, A Cere, A. Predojevic, A.M. Steinberg, and M.W. Mitchell, Optics Express 16, 18145 (2008).

Detecting hidden differences via permutation symmetries, R.B.A. Adamson, P.S. Turner, M.W. Mitchell, and A.M. Steinberg, Phys. Rev. A 78, 033832 (2008).

Efficient vibrational-state coupling in an optical tilted-washboard potential via multiple spatial translations, Samansa Maneshi, Jalani F. Kanem, Chao Zhuang, Matt Partlow, and Aephraim M. Steinberg, Phys. Rev. A 77, 022303 (2008).

A double-slit 'which-way' experiment addressing the complementarity-uncertainty debate, R. Mir, J.S. Lundeen, M.W. Mitchell, A.M. Steinberg, H.M. Wiseman, and J.L. Garretson, New J. Phys. 9 (2007) 287

Preparation of pure and mixed polarization qubits and the direct measurement of figures of merit, R.B.A. Adamson, L.K. Shalm, and A.M. Steinberg, Phys. Rev. A 75, 012104 (2007).

Observation of high-order quantum resonances in the kicked rotor, J.F. Kanem, S. Maneshi, M. Partlow, M. Spanner, and A.M. Steinberg, Phys. Rev. Lett. 98, 083004 (2007).

Multiparticle State Tomography: Hidden Differences, R.B.A. Adamson, L.K. Shalm, M.W. Mitchell, and A.M. Steinberg, Phys. Rev. Lett. 98, 043601 (2007).

Optimal bounded-error strategies for projective measurements in non-orthogonal state discrimination, M.A.P. Touzel, R.B.A. Adamson, and A.M. Steinberg, Phys. Rev. A 76, 062314 (2007).

Phase Space Tomography of Classical and Nonclassical Vibrational States of Atoms in an Optical Lattice, J.F. Kanem, S. Maneshi, S.H. Myrskog, and A.M. Steinberg, J. Opt. B. 7, S705(2005).

Quantum Process Tomography on vibrational states of atoms in an optical lattice, S.H. Myrskog, J.K. Fox, M.W. Mitchell, and A.M. Steinberg, Phys. Rev. A 72, 013615 (2005)

Classical and Quantum Analysis of One-Dimensional Velocity Selection for Ultracold Atoms, J.K. Fox, H.A. Kim, S.R. Mishra, S.H. Myrskog, A.M. Jofre, L.R. Segal, J.B. Kim, and A.M. Steinberg, J. Opt. B. 7, 240 (2005).

Quantum nonlocality obtained from local states by entanglement purification, P. Walther, K.J. Resch, C. Brukner, A.M. Steinberg, J.-W. Pan, and A. Zeilinger, Phys. Rev. Lett. 94, 040504 (2005)

Optical realization of optimal unambiguous discrimination for pure and mixed quantum states, M. Mohseni, A.M. Steinberg, and J. Bergou, Phys. Rev. Lett. 93, 200403 (2004)

Super-resolving phase measurements with a multi-photon entangled state, M.W. Mitchell, J.S. Lundeen, and A.M. Steinberg, Nature 429, 161 (2004).

Extracting joint weak values with local, single-particle measurements, K.J. Resch and A.M. Steinberg, Phys. Rev. Lett. 92,130402 (2004).

Experimental Realization of the Quantum Box Problem, K.J. Resch, J.S. Lundeen, A.M. Steinberg, Phys. Lett. A 324, 125 (2004).

Photon-exchange effects on photon-pair transmission, K.J. Resch, G.G. Lapaire, J.S. Lundeen, J.E. Sipe, A.M. Steinberg, Phys. Rev. A 69, 063814 (2004).

Clear message for causality, A.M. Steinberg, Physics World (Dec. 2003).

Experimental Characterization of 1-D Velocity Selection, S.H. Myrskog, J.K. Fox, L.R. Segal, A.M. Steinberg, A.M. Jofre, and S.R. Mishra, J. Kor. Phys. Soc 47, 6 (2005).

Diagnosis, prescription and prognosis of a Bell-state filter by quantum process tomography, M.W. Mitchell, C.W. Ellenor, S. Schneider, and A.M. Steinberg, Phys. Rev. Lett. 91, 120402 (2003).

Experimental application of decoherence-free subspaces in a optical quantum computing algorithm, M. Mohseni, J.S. Lundeen, K.J. Resch, and A.M. Steinberg, Phys. Rev. Lett. 91, 187903 (2003).

Speakable and Unspeakable, Past and Future, A.M. Steinberg, in SCIENCE AND ULTIMATE REALITY: Quantum Theory, Cosmology and Complexity, ed. John D. Barrow, Paul C.W. Davies, and Charles L. Harper, Jr., Cambridge University Press, 2003.

Practical creation and detection of polarization Bell states using parametric down-conversion, K.J. Resch, J.S. Lundeen, and A.M. Steinberg, in The Physics of Communication, Proceedings of the XXII Solvay Conference on Physics, Antoniou, Sadovnichy, and Walther eds., World Scientific (2003), pp 437-451.

A conditional-phase switch at the single-photon level, K.J. Resch, J.S. Lundeen, and A.M. Steinberg, Phys. Rev. Lett. 89, 037904 (2002).

Experimental issues in quantum-mechanical time measurement, A.M. Steinberg, in Time in Quantum Mechanics, edited by J.G. Muga et al. (Springer-Verlag, 2002), pp. 305-325

Quantum state preparation and conditional coherence, K.J. Resch, J.S. Lundeen, and A.M. Steinberg, Phys. Rev. Lett. 88, 113601 (2002).

Electromagnetically induced opacity for photon pairs, K.J. Resch, J.S. Lundeen, and A.M. Steinberg, J. Mod. Opt. 49, 487 (2002).

Nonlinear optics with less than one photon, K.J. Resch, J.S. Lundeen, and A.M. Steinberg, Phys. Rev. Lett 87, 123603 (2001).

Comment on 'Manipulating the frequency entangled states by an acoustic-optical modulator,' K.J. Resch, S.H. Myrskog, J.S. Lundeen, and A.M. Steinberg, Phys. Rev. A 64, 056101 (2001).

Experimental observation of nonclassical effects on single-photon detection rates, K.J. Resch, J.S. Lundeen, and A.M. Steinberg, Phys. Rev. A 63, 020102 (2000).

Total reflection does not occur in negative time, K.J. Resch, J.S. Lundeen, and A.M. Steinberg, IEEE J. Quant. Electr. 37, 794 (2001).

No thing goes faster than light, A.M. Steinberg, Physics World 13, 21 (2000).

Modified "delta kick cooling" using magnetic field gradients, S.H. Myrskog, J.K. Fox, H.S. Moon, J.B. Kim, and A.M. Steinberg, Phys. Rev. A 61, 053412/1-6 (2000).

Nanokelvin of the North, S.H. Myrskog, J.K. Fox, and A.M. Steinberg, Physics in Canada 55, 149 (7-8/99).

On energy transfer by detection of a tunneling atom, A. M. Steinberg, Journal of the Korean Physical Society 35 (3), 122 (1999).

`` An atom optics experiment to investigate faster-than-light tunneling,'' A.M. Steinberg, S. Myrskog, Han Seb Moon, Hyun Ah Kim, Jalani Fox, and Jung Bog Kim, Ann. Phys. (Leipzig) 7, 593 (1998).

`` Can a falling tree make a noise in two forests at the same time?'', A. M. Steinberg, in Causality and Locality in Modern Physics, S. Jeffers, G. Hunter, and J.-P. Vigier, eds., Kluwer Academic Publishers (Dordrecht: 1997), p. 431.

`` Squeezing with cold atoms", A. Lambrecht, T. Coudreau, A.M. Steinberg, and E. Giacobino, Europhysics Letters, vol. 36, (no. 2): 93-98, 10 October 1996.

``Quantum non-locality in two-photon experiments at Berkeley", R.Y. Chiao, P.G. Kwiat, and A.M. Steinberg, Quantum and Semiclassical Optics, vol. 7, (no. 3): 259-78, June (1995).

``Conditional probabilities in quantum theory and the tunneling-time controversy", A.M. Steinberg, Physical Review A, vol. 52, (no. 1): 32-42, July (1995).

``How much time does a tunneling particle spend in the barrier region?", A.M. Steinberg, Physical Review Letters, vol. 74, (no. 13): 2405-9, March (1995).

``Measurement of the single-photon tunneling time", A.M. Steinberg, P.G. Kwiat, and R.Y. Chiao, Phys. Rev. Lett., vol. 71, (no. 5): 708-11, August (1993).

Tunneling Times and Superluminality, R. Y. Chiao and A. M. Steinberg, in Progress in Optics vol. XXXVII, Emil Wolf ed., Elsevier (Amsterdam: 1997), pp. 347-406.

Quantum Optical Tests of the Foundations of Physics, A.M. Steinberg, R.Y. Chiao, and P.G. Kwiat, in the American Insitute of Physics Atomic, Molecular, and Optical Physics Handbook, edited by G.W.F. Drake, AIP Press, 1996.

Optical tests of quantum mechanics, R.Y. Chiao, P.G. Kwiat, and A.M. Steinberg, in Advances in Atomic, Molecular, and Optical Physics, vol. 34, B. Bederson and H. Walther eds, Academic Press, 1994.

`` Faster Than Light?", R.Y. Chiao, P.G. Kwiat, and A.M. Steinberg, Scientific American, vol. 269, (no. 2): 52-60, August (1993).

Babar et les variables cachées

SOME RECENT POSTERS AND PRESENTATIONS

God's Dice: From Einstein to the Internet is a talk I gave for the PASU and Engineering Science students on Nov 24, 2009, updated from an earlier talk at the Ontario Science Centre in celebration of the Einsteinjahr. It goes from wave-particle duality and the Bohr-Einstein debates through the EPR Paradox and Bell's Inequalities to a layman's introduction to quantum cryptography, computation, and teleportation.

Testing a new way of sharing files...

Thinking Inside the Box: Weakly Measuring Postselected Ensembles, The Clock and the Quantum, Sep 2008, at PI's site as Flash Presentation.

Tomography on the Sphere, Krister's talk at the QUEST workshop, August 2008 (multimedia format at PI's site)

Improving Quantum State Tomography with Mutually Unbiased Bases, Rob's talk at the QUEST workshop, August 2008 (multimedia format at PI's site)

Measuring Quantum States in the Presence of Fundamental Symmetries, invited talk at QCMC (Calgary, August 2008).

Quantum states of light and quantum interference, first of two talks at the Michigan Quantum Summer School (June 2008); or mp4 video.

Quantum measurement and quantum information with photons, second of two talks at the Michigan Quantum Summer School (June 2008); or mp4 video.

Decoherence and Control of Vibrational States of Atoms in an Optical Lattice

A recent overview of our work on controlling and measuring atoms and photons

A poster describing some of the major goals of our BEC experiment, as of February 2007

Chris's talk about our BEC experiment

Samansa's talk about control of optical lattices

Matt's talk about our observation of quantum resonances in an optical lattice

Manipulating and Measuring the Quantum State of Photons and Atoms, invited talk at QUEST workshop 2005.

Our latest progress towards BEC of 87Rb, and planned experiments

Le photon dans tous ses états, séminaire du Collège de France, mai 2004.

Small-scale quantum information processing with linear optics, presentation by Masoud Mohseni at Quantum Physics of Nature meeting, Vienna, May 2005.

Expériences de tomographie et d'échos dans des réseaux optiques, séminaire à l'Institut d'Optique à Orsay, mai 2004.

Annual report on our tailored quantum error correction project, May 2004.

Recent experiments on weak measurement and quantum state construction, Quantum Theory seminar, Tel-Aviv University, April 2004.

Series of lectures on Experimental Issues in Quantum Measurement, Vienna, Fall 2003.

Nonlinear optics at the quantum level and quantum information in optical systems.

Quantum Process Tomography in an Optical Lattice, Stefan's talk at DAMOP 2003.

Tunneling-Induced Coherence in Optical Lattices, Samansa's poster for the 2003 Cross-Border Workshop.

Optical implementation of the Quantum Box Problem, QELS 03 talk by K. Resch, J. Lundeen, and A. Steinberg.

An Experimental Implementation of Hardy's Paradox, QELS 03 talk by J.S. Lundeen, K.J. Resch, and A.M. Steinberg.

Quantum algorithms in the presence of decoherence: optical experiments, QELS 03 talk by M. Mohseni, J. Lundeen, K. Resch, and A. Steinberg.

Playing Games With the Information in Atoms and Photons, one version of a colloquium I've been giving in 2003 describing a number of our ongoing projects.

Quantum Information With Photons and Atoms, talk by A.M. Steinberg at the Physics of Quantum Electronics conference (2003).

Motional Quantum State Tomography on Atoms in an Optical Lattice, poster by S.H. Myrskog, J.K. Fox, and A.M. Steinberg (2002).

Optical Implementation of the Deutsch-Jozsa Algorithm in the Presence of Noise, poster by M. Mohsen, J.S. Lundeen, K.J. Resch, and A.M. Steinberg (2002) (also available in pdf format).

Amplification of Superluminality,presentation at ITP Mini-Workshop on Quantum Optics (2002) by A.M. Steinberg.

Efficient 1-D velocity selection in laser-cooled atom clouds, S.H. Myrskog, J.K. Fox, A.M. Jofre, L.R. Segal, S.R. Mishra, and A.M. Steinberg, at the 8th Rochester Conference on Coherence and Quantum Optics, June 2001.

Kevin's talk on ``Coherence conditioned on a single photon'' at the International Conference on Squeezed States and Uncertainty Relations, Boston, 2001.

Experiments with Entangled Photons, lecture by A.M. Steinberg at the May 2001 Fields Institute Summer School in Quantum Information Processing.

Transparencies for Jeff's talk on Nonlinear Optics With Less Than One Photon at the Snowbird Winter Conference on Quantum Electronics, January 2001.

We presented a poster at the Euroschool on Bose Condensation and Atom Optics in July, 2000 on our velocity-selection work and plans to observe atomic tunneling.

We presented a poster at DAMOP 2000 on an ongoing experiment to test 100% Reflection in Less Than No Time at All.

We presented a poster at the Gordon Conference on Dynamics of Simple Systems in the summer of 1999, discussing Velocity-Selection of Ultracold Atoms .

We presented two posters at the 16th International Conference on Atomic Physics in August, 1998. One was entitled Ultra-Cold atoms for investigations into atomic tunneling, and the other was Quantum Interference with Femtosecond Photon Pair Pulses.

Research Associates, Postdocs and Visitors

Luciano Cruz (Ph.D. Universidade de São Paulo), postdoctoral fellow.

Yasaman Soudagar, collaborator and frequent visitor, student of Prof. Nicolas Godbout at the Ecole Polytechnique, Montreal.

Sacha Kocsis, former M.Sc. student back in the lab for a time before heading off to Griffith University.
Florian Wolfgramm, collaborator and sometime visitor, student of Morgan Mitchell at ICFO, Barcelona.
Fabian Torres, visiting "predoc" from Carlos Saavedra's group at the Center for Quantum Optics and Quantum Information, Concepcion.
Alan Stummer (Research Laboratory Technologist)

(Postdoctoral opportunities available )

Graduate Students

Chris Ellenor: Bose-Einstein condensation and interactions with dipole barrier

Mirco Siercke: dissertation copy-editing

Samansa Maneshi: Tomography and control in optical lattices

Lynden (Krister) Shalm: 3-photon entangled states; novel sources of single and multiple photons

Rockson Chang: Bose-Einstein condensation and interactions with dipole barriers

Xingxing Xing: Narrow-band entangled photons from a below-threshold OPO

Chao Zhuang: Optimal control techniques in an optical lattice

Chris Paul: optical lattices and enforcement

Amir Feizpour

Adam Weir

Zachari Medendorp

Lee Rozema

Some of our collaborators (past, present, and future)

Daniel James
John Sipe
Paul Brumer
Joseph Thywissen
Morgan Mitchell
Nicolas Godbout
Allan Griffin
Paul Kwiat
Andrew White
Ray Chiao
Peter Turner
Sasha Sergienko
J. Gonzalo Muga
Janos Bergou
Mark Hillery
Daniel Lidar
Alain Aspect
Raymond Laflamme
Sergei Kulik
Maria Chekhova
Misha Ivanov
John Behr
Ivan Deutsch
Poul Jessen
Raymond Laflamme
Terry Rudolph
Rob Spekkens
Anton Zeilinger
Rich Mirin

Undergraduate Students

Sylvain Ravets (stagiaire from ENS-Cachan)
Anselm Schultes (exchange student from Uni. Würzburg)
Nick Chisholm (returning NSERC summer student from MacMaster, en route to Harvard for grad school)
Boris Braverman

(For undergraduate research opportunities, see announcement.)

Former group members

Former grad students:
Rob Adamson is now a postdoc at Dalhousie (Ph.D. 2008).
Jalani Fox Kanem (Ph.D. 2006, and then a postdoc with Ed Hinds, Imperial College, London), went to ScotiaBank, where he is toiling away to complete the destruction of the global financial markets..
Jeff Lundeen (Ph.D. 2006), after a postdoc with Ian Walmsley, Oxford, and a short stay with Morgan Mitchell's group at ICFO, Barcelona, is now a Research Associate at NRC, working on Quantum Information and Metrology with Photons..
Ana Jofre (Ph.D. 2004; then a postdoc at NIST); Asst. Prof. at UNC Charlotte since Fall '07)
Stefan Myrskog (Ph.D. 2003; pdf with Joseph Thywissen, and then with Ted Sargent and Peter Smith in ECE) is now Chief Scientist at Morgan Solar.
Kevin Resch (1997-PhD 2002); did a postdoc with Anton Zeilinger, and one with Andrew White; now an Assistant Professor at IQC and the Physics Department at Waterloo)
Sacha Kocsis (M.Sc. 2008)
Jason Ng (M.Sc. 2008)
Xiaoxian Liu: Sideband engineering and adiabatic control methods in an optical lattice (M.Sc. 2007)
Masoud Mohseni (M.Sc. 2002; Ph.D. with Daniel Lidar; now a postdoc in the Aspuru-Guzik group at Harvard)
Brock Wilson (now at D-Wave Systems).
Fan Wang (M.Sc. 2005), now working with Young-June Kim
Sal Maone
Reza Mir (M.Sc. 2003)
Lauren Segal (1999-2000); completed her M.Sc. and is now a mezzo-soprano with the Canadian Opera Company.
Chris Dimas (1998-9); now an optical design engineer at EFOS (EXFO)
Other former group members:
Nick Chisholm
Eva Markowski
Amanda O'Halloran
Ardavan Darabi
Ahmed al-Mehairi
Nick Miladinovic
Morgan Mitchell (postdoc 2002-2004; now a Research Assistant Professor at the Institut de Ciències Fotòniques in Barcelona)
Marcelo Martinelli (pdf 2003; now an Asst. Prof. at University of Sao Paulo)
Matt Partlow (postdoctoral fellow)
An-Ning Zhang, now a postdoc with Alex Lvovsky at IQIS and the Department of Physics & Astronomy, Calgary.
Nan Yang
Michael Sitwell
Curtis Leung
Arthur Chang
Rebecca Nie
Eugen Friesen
Christian Rewitz
Max Touzel
Sabrina Liao
Shannon Wang
Ray Gao
Alexander Thobe
Jan Hennneberger, Universität Würzburg (visiting 2004-5)
Enguerrand Menard, ENS-Lyon (visiting 2005)
Alpha Gaëtan, Univ. Orsay (visiting 2005)
Karen Saucke (2003)
Guillaume Foucaud (summer 2002); continuing at Ecole Superieure d'Optique, Orsay.
Jai Grover (summer 2001); completed his B.Sc. at Toronto, and is now a Ph.D. student at Cambridge.
David Glenn (2000-2001); completed M.Sc. at U. of T. with Prof. Daniel Lidar in Fall '02, and now completing his Ph.D. at Yale University.
Satya Ram Mishra (2000-2001); now back at the Centre for Advanced Technology, Indore, India.
David Caplan (summer 2000); completed B.Sc. UBC and now a graduate student at University of Illinois.
Laurent Lombard (summer 2000); back at ESO - Orsay.
Laure Wawrezinieck (summer 2000); back at ENS-Cachan.
Naomi Ginsberg (1999-2000); currently finishing her Ph.D. with Lene Hau at Harvard -- see Physics News Update and Nature News&Views for stories about her work; moving on to a postdoctoral position in the Fleming group at Berkeley.
Phillip Hadley (1998-2000); after working with Paul Kwiat at Los Alamos National Labs, and as a metrology engineer at CVI Laser, completed his undergraduate degree at U of T and was about to begin an internship at LAM Research until he got stopped at the U.S. border.
Sarah Karram (summer 1999; at Trent University)
Magali Davenet (summer 1999; at the Ecole Superieure d'Optique, Orsay)
Kevin Lee (summer 1998)
Jung Bog Kim (1997-8; back at the Korea National Univ. of Education)
Han Seb Moon (1997; KNUE)
Hyun Ah Kim (1997-8; KNUE)
Jason McKeever (1997-8; Ph.D. at Cal Tech -- see Physics News Update for story on his work -- then did a postdoc with Christophe Salomon before returning to Toronto as a pdf with Joseph Thywissen)
Roy Wang (summer 1997; moved to JDS Uniphase; spent some time attempting to sell his body after that didn't last; moved into sales engineering at Human Solutions after that didn't last either)
Navin Bhat (jointly with Prof. Paul Brumer during summer 1997; now a Ph.D. student with Prof. John Sipe )
Maryna Savchenko