Trapping-state restoration in the randomly driven Jaynes-Cummings model by conditional measurements

Mauro Fortunato, Gershon Kurizki, and Wolfgang P. Schleich
Phys. Rev. A 59, 714 – Published 1 January 1999
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Abstract

We propose a scheme which can effectively restore fixed points in the quantum dynamics of repeated Jaynes-Cummings interactions followed by atomic state measurements, when the interaction times fluctuate randomly. It is based on selection of superposed atomic states whose phase correlations tend to suppress the phase fluctuations of each separate state. One suggested realization involves the convergence of the cavity field distribution to a single Fock state by conditional measurements performed on two-level atoms with fluctuating velocities after they cross the cavity. Another realization involves a trapped ion whose internal-motional state coupling fluctuates randomly. Its motional state is made to converge to a Fock state by conditional measurements of the internal state of the ion.

  • Received 30 August 1996

DOI:https://doi.org/10.1103/PhysRevA.59.714

©1999 American Physical Society

Authors & Affiliations

Mauro Fortunato1,*, Gershon Kurizki3, and Wolfgang P. Schleich2

  • 1Dipartimento di Matematica e Fisica and INFM, Università di Camerino, Via Madonna delle Carceri, I-62032 Camerino (MC), Italy
  • 2Abteilung für Quantenphysik, Universität Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany
  • 3Department of Chemical Physics, The Weizmann Institute of Science, Rehovot 76100, Israel

  • *Electronic address: for@physik.uni-ulm.de

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Vol. 59, Iss. 1 — January 1999

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