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QUANTUM ZENO CONTROL OF COHERENT DISSOCIATION


  Christine Khripkov [1]  ,  Amichay Vardi [1]  
 [1] Department of Chemistry, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel

We study the effect of dephasing on the coherent dissociation dynamics of an atom-molecule Bose-Einstein condensate. We show that when phase-noise intensity is strong with respect to the inverse correlation time of the stimulated process, dissociation is suppressed via a Bose enhanced Quantum Zeno effect [1].
This is complementary to the quantum Zeno control of phase-diffusion in a bimodal condensate by symmetric noise [2] in that the controlled process here is phase-formation and the required decoherence mechanism for its suppression is purely phase noise.

  1. C. Khripkov and A. Vardi, Phys. Rev. A 84, 021606(R) (2011).

  2. Y. Khodorkovsky, G. Kurizki, and A. Vardi, Phys. Rev. Lett. 100, 220403 (2008); Phys. Rev. A 80, 023609 (2009).