# Quantum jumps of light recording the birth and death of a photon in a cavity

@article{Gleyzes2007QuantumJO, title={Quantum jumps of light recording the birth and death of a photon in a cavity}, author={S. Gleyzes and Stefan Kuhr and Christine Guerlin and Julien Bernu and Samuel Deleglise and Ulrich Busk Hoff and M. Brune and Jean-Michel Raimond and Serge Haroche}, journal={Nature}, year={2007}, volume={446}, pages={297-300} }

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…

## 488 Citations

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