Linear optical extraction of photon-number Fock states from coherent states

Details Linear optical extraction of photon-number Fock states from coherent states Linear optical extraction of photon-number Fock states from coherent states

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005phrva..71b1801s&link_type=abstract

Physical Review A, vol. 71, Issue 2, id. 021801

Statistics

15

Photon Statistics And Coherence Theory, Nonclassical States Of The Electromagnetic Field, Including Entangled Photon States, Quantum State Engineering And Measurements

Scientific paper

Photon-number Fock states play important roles in quantum optics. However, the generation of the states are very difficult because of the lack of large effective nonlinearities. In this Rapid Communication, I show a scheme to produce the Fock state from an input coherent state by using only linear optics method and projection measurements. I analyze the case of five-photon number state generation from coherent states for a specific case of the scheme. It is possible to remove the vacuum state from the output state when one introduces quantum nondemolition measurement that can also be implemented with all linear optics setup.

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