Nondestructive Rydberg atom counting with mesoscopic fields in a cavity |
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Authors: | Maioli P Meunier T Gleyzes S Auffeves A Nogues G Brune M Raimond J M Haroche S |
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Institution: | Laboratoire Kastler Brossel, Département de Physique de l'Ecole Normale Supérieure, 24 rue Lhomond, F-75231 Paris CEDEX 05, France. |
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Abstract: | We present an efficient, state-selective, nondemolition atom-counting procedure based on the dispersive interaction of a sample of circular Rydberg atoms with a mesoscopic field contained in a high-quality superconducting cavity. The state-dependent atomic index of refraction, proportional to the atom number, shifts the classical field phase. A homodyne procedure translates the information from the phase to the intensity. The final field intensity is readout by a mesoscopic atomic sample. This method opens promising routes for quantum information processing and nonclassical state generation with Rydberg atoms. |
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