Phys. Rev. Lett. 94, 010401 (2005) [4 pages]Rabi Oscillations Revival Induced by Time Reversal: A Test of Mesoscopic Quantum CoherenceReceived 19 July 2004; published 3 January 2005 Using an echo technique proposed by Morigi et al. [ Phys. Rev. A 65 040102 (2002)], we have time-reversed the atom-field interaction in a cavity quantum electrodynamics experiment. The collapse of the atomic Rabi oscillation in a coherent field is reversed, resulting in an induced revival signal. The amplitude of this “echo” is sensitive to nonunitary decoherence processes. Its observation demonstrates the existence of a mesoscopic quantum superposition of field states in the cavity between the collapse and the revival times. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.010401
DOI:
10.1103/PhysRevLett.94.010401
PACS:
03.65.–w, 03.67.Mn, 42.50.Dv
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