Retroactive quantum jumps in a strongly-coupled atom-field system

Details Retroactive quantum jumps in a strongly-coupled atom-field system Retroactive quantum jumps in a strongly-coupled atom-field system

1998-07-06

arxiv.org/abs/quant-ph/9807018v1

Phys.Rev.Lett.81:4620-4623,1998; Erratum-ibid.82:1798,1999

Physics

Quantum Physics

4 pages, uses RevTex, 5 EPS figures

Scientific paper

10.1103/PhysRevLett.81.4620

We investigate a novel type of conditional dynamic that occurs in the strongly-driven Jaynes-Cummings model with dissipation. Extending the work of Alsing and Carmichael [Quantum Opt. {\bf 3}, 13 (1991)], we present a combined numerical and analytic study of the Stochastic Master Equation that describes the system's conditional evolution when the cavity output is continuously observed via homodyne detection, but atomic spontaneous emission is not monitored at all. We find that quantum jumps of the atomic state are induced by its dynamical coupling to the optical field, in order retroactively to justify atypical fluctuations in ocurring in the homodyne photocurrent.

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