Quantum-Non-Demolition Endoscopic Tomography

Details Quantum-Non-Demolition Endoscopic Tomography Quantum-Non-Demolition Endoscopic Tomography

1998-08-26

arxiv.org/abs/quant-ph/9808052v1

Opt.Spectrosc.87:518,1999

Physics

Quantum Physics

RevTeX, 5 pages, no figures. Talk given by M. Fortunato at the SQuO-VII, 7th International Seminar on Quantum Optics, Raubiki

Scientific paper

We present a new indirect method to measure the quantum state of a single mode of the electromagnetic field in a cavity. Our proposal combines the idea of (endoscopic) probing and that of tomography in the sense that the signal field is coupled via a quantum-non-demolition Hamiltonian to a meter field on which then quantum state tomography is performed using balanced homodyne detection. This technique provides full information about the signal state. We also discuss the influence of the measurement of the meter on the signal field.

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