Quantum walks of correlated particles
arXiv:1006.4764 · doi:10.1126/science.1193515
Abstract
Quantum walks of correlated particles offer the possibility to study large-scale quantum interference, simulate biological, chemical and physical systems, and a route to universal quantum computation. Here we demonstrate quantum walks of two identical photons in an array of 21 continuously evanescently-coupled waveguides in a SiOxNy chip. We observe quantum correlations, violating a classical limit by 76 standard deviations, and find that they depend critically on the input state of the quantum walk. These results open the way to a powerful approach to quantum walks using correlated particles to encode information in an exponentially larger state space.
References in corpus (12)
- Photonic quantum technologies
- Environment-Assisted Quantum Walks in Photosynthetic Energy Transfer
- Silica-on-Silicon Waveguide Quantum Circuits
- Universal computation by quantum walk
- Dephasing assisted transport: Quantum networks and biomolecules
- Spatial search by quantum walk
- Quantum Walk in Position Space with Single Optically Trapped Atoms
- Realization of quantum walks with negligible decoherence in waveguide lattices
- Shor's quantum factoring algorithm on a photonic chip
- Manipulating multi-photon entanglement in waveguide quantum circuits
- Quantum Walk on a Line with Two Entangled Particles
- Two-photon wave mechanics
Cited by in corpus (9)
- Single-Spin Addressing in an Atomic Mott Insulator
- Quantum Correlations in Two-Particle Anderson Localization
- Counting Statistics of Many-Particle Quantum Walks
- Bloch oscillations of Path-Entangled Photons
- Simulation of noise-assisted transport via optical cavity networks
- Survival probability in a one-dimensional quantum walk on a trapped lattice
- A measure of tripartite entanglement in bosonic and fermionic systems
- Searches on star graphs and equivalent oracle problems
- Where to quantum walk