Volume 69, Number 6, March 2005
|874 - 878
|18 February 2005
Is a multiple excitation of a single atom equivalent to a single excitation of an ensemble of atoms?
Minerva Center and the Department of Physics, Bar-Ilan University Ramat-Gan 52900, Israel
Accepted: 19 January 2005
Recent technological advances have enabled to isolate, control and measure the properties of a single atom, leading to the possibility to perform statistics on the behavior of single quantum systems. These experiments have enabled to check a question which was out of reach previously: Is the statistics of a multiple excitation of an atom N times equivalent to a single excitation of an ensemble of N atoms? We present a new method to analyze quantum measurements which leads to the conclusion that the answer is most probably no. We discuss the merits of the analysis and its conclusion.
PACS: 05.30.-d – Quantum statistical mechanics / 32.80.Pj – Optical cooling of atoms; trapping / 03.67.-a – Quantum information
© EDP Sciences, 2005
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