Phase space tweezers for tailoring cavity fields by quantum Zeno dynamics

Jean-Michel Raimond (1) , Clément Sayrin (1) , S. Gleyzes (1) , Igor Dotsenko (1, 2) , Michel Brune (1) , Serge Haroche (1, 2) , Saverio Pascazio (3) , Paolo Facchi (3)

1 LKB (Lhomond) - Laboratoire Kastler Brossel
2 LKB [Collège de France] - Laboratoire Kastler Brossel
3 INFN, sezione di Bari - Istituto Nazionale di Fisica Nucleare, sezione di Bari

We discuss an implementation of Quantum Zeno Dynamics in a Cavity Quantum Electrodynamics experiment. By performing repeated unitary operations on atoms coupled to the field, we restrict the field evolution in chosen subspaces of the total Hilbert space. This procedure leads to promising methods for tailoring non-classical states. We propose to realize 'tweezers' picking a coherent field at a point in phase space and moving it towards an arbitrary final position without affecting other non-overlapping coherent components. These effects could be observed with a state-of-the-art apparatus.

Mots clés: Quantum Zeno dynamics; cavity quantum electrodynamics

Domaines: Physique Quantique [quant-ph]

Jean-Michel Raimond, Clément Sayrin, S. Gleyzes, Igor Dotsenko, Michel Brune, et al.. Phase space tweezers for tailoring cavity fields by quantum Zeno dynamics. 2010. ⟨hal-00506092⟩