Quantum Zeno dynamics of a field in a cavity

J. M. Raimond, P. Facchi, B. Peaudecerf, S. Pascazio, C. Sayrin, I. Dotsenko, S. Gleyzes, M. Brune, and S. Haroche
Phys. Rev. A 86, 032120 – Published 25 September 2012

Abstract

We analyze the quantum Zeno dynamics that takes place when a field stored in a cavity undergoes frequent interactions with atoms. We show that repeated measurements or unitary operations performed on the atoms probing the field state confine the evolution to tailored subspaces of the total Hilbert space. This confinement leads to nontrivial field evolutions and to the generation of interesting nonclassical states, including mesoscopic field state superpositions. We elucidate the main features of the quantum Zeno mechanism in the context of a state-of-the-art cavity quantum electrodynamics experiment. A plethora of effects is investigated, from state manipulations by phase space tweezers to nearly arbitrary state synthesis. We analyze in details the practical implementation of this dynamics and assess its robustness by numerical simulations including realistic experimental imperfections. We comment on the various perspectives opened by this proposal.

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  • Received 26 July 2012

DOI:https://doi.org/10.1103/PhysRevA.86.032120

©2012 American Physical Society

Authors & Affiliations

J. M. Raimond1, P. Facchi2,3, B. Peaudecerf1, S. Pascazio3,4, C. Sayrin1, I. Dotsenko1, S. Gleyzes1, M. Brune1, and S. Haroche1,5

  • 1Laboratoire Kastler Brossel, CNRS, ENS, UPMC-Paris 6, 24 rue Lhomond, 75231 Paris, France
  • 2Dipartimento di Matematica and MECENAS, Università di Bari, I-70125 Bari, Italy
  • 3INFN, Sezione di Bari, I-70126 Bari, Italy
  • 4Dipartimento di Fisica and MECENAS, Università di Bari, I-70126 Bari, Italy
  • 5Collège de France, 11 place Marcelin Berthelot, 75231 Paris, France

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Issue

Vol. 86, Iss. 3 — September 2012

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