Abstract
Quantum walks of correlated particles offer the possibility of studying large-scale quantum interference; simulating biological, chemical, and physical systems; and providing a route to universal quantum computation. We have demonstrated quantum walks of two identical photons in an array of 21 continuously evanescently coupled waveguides in a SiOxNy chip. We observed quantum correlations, violating a classical limit by 76 standard deviations, and found that the correlations depended critically on the input state of the quantum walk. These results present a powerful approach to achieving quantum walks with correlated particles to encode information in an exponentially larger state space.
Original language | Undefined |
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Pages (from-to) | 1500-1503 |
Number of pages | 4 |
Journal | Science |
Volume | 329 |
Issue number | 5998 |
DOIs | |
Publication status | Published - 17 Sept 2010 |
Keywords
- quantum correletions
- EWI-18535
- IOMS-PIT: PHOTONICS INTEGRATION TECHNOLOGY
- IR-73925
- correlated particles
- METIS-271050
- Quantum walk