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arXiv · 1203.1920

Field locked to Fock state by quantum feedback with single photon corrections

X. Zhou·I. Dotsenko·B. Peaudecerf·T. Rybarczyk·C. Sayrin·S. Gleyzes·J. M. Raimond·M. Brune·S. Haroche
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Abstract

Fock states with photon numbers n up to 7 are prepared on demand in a microwave superconducting cavity by a quantum feedback procedure which reverses decoherence-induced quantum jumps. Circular Rydberg atoms are used as quantum non-demolition sensors or as single photon emitter/absorber actuators. The quantum nature of these actuators matches the correction of single-photon quantum jumps due to relaxation. The flexibility of this method is suited to the generation of arbitrary sequences of Fock states.

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X. Zhou, I. Dotsenko, B. Peaudecerf, T. Rybarczyk, C. Sayrin, S. Gleyzes, J. M. Raimond, M. Brune, S. Haroche. 2012-03-08. Field locked to Fock state by quantum feedback with single photon corrections. https://doi.org/10.1103/physrevlett.108.243602

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