Gleyzes, S; Kuhr, S; Guerlin, C; Bernu, Julien; Deleglise, S; Hoff, U B; Brune, M; Raimond, J-M; Haroche, S
A microscopic quantum system under continuous observation exhibits at random times sudden jumps between its states. The detection of this quantum feature requires a quantum non-demolition (QND) measurement repeated many times during the system's evolution. Whereas quantum jumps of trapped massive particles (electrons, ions or molecules) have been observed, this has proved more challenging for light quanta. Standard photodetectors absorb light and are thus unable to detect the same photon twice....[Show more]
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