Push button generation of multiphoton entanglement

Details Push button generation of multiphoton entanglement Push button generation of multiphoton entanglement

2004-03-17

arxiv.org/abs/quant-ph/0403125v1

Proc. SPIE 5436, 118 (2004).

Physics

Quantum Physics

9 pages, 4 figures, proceedings for the conference ``Quantum Information and Computation II'' in Orlando, April 2004

Scientific paper

10.1117/12.540981

Photon entanglement is an essential ingredient for linear optics quantum computing schemes, quantum cryptographic protocols and fundamental tests of quantum mechanics. Here we describe a setup that allows for the generation of polarisation-entangled N-photon states on demand. The photons are obtained by mapping the entangled state of N atoms, each of them trapped inside an optical cavity, onto the free radiation field. The required initial state can be prepared by performing postselective measurements on the collective emission from the cavities through a multiport beamsplitter.

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