State preparation by photon filtering

Details State preparation by photon filtering State preparation by photon filtering

1999-06-21

arxiv.org/abs/quant-ph/9906077v1

Fortsch.Phys. 48 (2000) 671

Physics

Quantum Physics

Paper submitted to the proceedings of the III Adriatico Research Conference on Quantum Interferometry, ICTP, March 1-5,1999. 9

Scientific paper

We propose a setup capable of generating Fock states of a single mode radiation field. The scheme is based on coupling the signal field to a ring cavity through cross-Kerr phase modulation, and on conditional ON-OFF photodetection at the output cavity mode. The same setup allows to prepare selected superpositions of Fock states and entangled two-mode states. Remarkably, the detector's quantum efficiency does not affect the reliability of the state synthesis.

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