Direct Measurement of the Wigner Function of a One-Photon Fock State in a Cavity

Details Direct Measurement of the Wigner Function of a One-Photon Fock State in a Cavity Direct Measurement of the Wigner Function of a One-Photon Fock State in a Cavity

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002phrvl..89t0402b&link_type=abstract

Physical Review Letters, vol. 89, Issue 20, id. 200402

Statistics

106

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

Scientific paper

We have measured the complete Wigner function W of the vacuum and of a single-photon state for a field stored in a high-Q cavity. This experiment implements the direct Lutterbach and Davidovich method [

L. G. Lutterbach and L. Davidovich, Phys. Rev. Lett. 78, 2547 (1997)

] and is based on the dispersive interaction of a single circular Rydberg atom with the cavity field. The nonclassical nature of the single-photon field is exhibited by a region of negative W values. Extensions to other nonclassical cavity field states are discussed.

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