Deterministic multi-mode photonic device for quantum information processing

Details Deterministic multi-mode photonic device for quantum information processing Deterministic multi-mode photonic device for quantum information processing

2010-01-11

arxiv.org/abs/1001.1429v2

Phys. Rev. A 81, 043822 (2010)

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevA.81.043822

We propose the implementation of a light source, which can deterministically generate a rich variety of multi-mode quantum states. The desired states are encoded in the collective population of different ground hyperfine states of an atomic ensemble and converted to multi-mode photonic states by excitation to optically excited levels followed by cooperative spontaneous emission. Among our examples of applications, we demonstrate how two-photon entangled states can be prepared and implemented in a protocol for reference frame free quantum key distribution and how one-dimensional as well as higher-dimensional cluster states can be produced.

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