Bernu, J. and Deleglise, S. and Sayrin, C. and Kuhr, S. and Dotsenko, I. and Brune, M. and Raimond, J. M. and Haroche, S. (2008) Freezing coherent field growth in a cavity by the quantum zeno effect. Physical Review Letters, 101 (18). ISSN 0031-9007Full text not available in this repository. (Request a copy from the Strathclyde author)
We have frozen the coherent evolution of a field in a cavity by repeated measurements of its photon number. We use circular Rydberg atoms dispersively coupled to the cavity mode for an absorption-free photon counting. These measurements inhibit the growth of a field injected in the cavity by a classical source. This manifestation of the quantum Zeno effect illustrates the backaction of the photon number determination onto the field phase. The residual growth of the field can be seen as a random walk of its amplitude in the two-dimensional phase space. This experiment sheds light onto the measurement process and opens perspectives for active quantum feedback.
|Keywords:||Freezing Coherent Field, Quantum Zeno Effect, Physics, Physics and Astronomy(all)|
|Subjects:||Science > Physics|
|Department:||Faculty of Science > Physics|
|Depositing user:||Pure Administrator|
|Date Deposited:||15 Nov 2011 16:35|
|Last modified:||04 May 2016 18:06|