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arXiv · quant-ph/9906077

State preparation by photon filtering

G. M. D'Ariano·L. Maccone·M. G. A. Paris·M. F. Sacchi
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Abstract

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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G. M. D'Ariano, L. Maccone, M. G. A. Paris, M. F. Sacchi. 1999-06-21. State preparation by photon filtering. https://doi.org/10.1002/(sici)1521-3978(200005)48%3A5%2F7%3C671%3A%3Aaid-prop671%3E3.0.co%3B2-g

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