# Quantum information in the optics laboratory and the “real” world

Date and time |
Mar 01, 2007 from 04:10 PM to 05:00 PM |
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Location | McLennan Physics (MP) 102 |

Host | Aephraim Steinberg |

## Kevin Resch

Technologies that take advantage of the strange features of quantum mechanics are poised to change the way we communicate and process information. Entanglement is at the heart of these technologies. I will discuss two applications of entangled photons in quantum information and their significance:

1) I will discuss the first experiments distributing entangled photons through long-distance free-space links up to 7.8km. Practical quantum communication requires shared entanglement and photons are the obvious choice for carriers over long distances. Our results are promising for extending quantum communication to very large distances.

2) I will describe our experimental implementation of one-way quantum computing. The One-Way Model is a radically different method for constructing a quantum computer based on measuring individual particles in a large entangled state. I will give a straightforward introduction to the features of this model and describe our recent experimental results – from single-qubit rotations to Grover’s quantum search algorithm.

## Multimedia

MP3 recording of talk

PDF presentation file

PPT presentation file (with voice synchronization)

Contact Name | Aephraim Steinberg |
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