Quantum Optics Parametric Quantum Optics
Small displacement measurements

 Claude Fabre, Agnès Maître, Vincent Delaubert, Nicolas Treps

work done in collaboration with the Australian National University

 

Presentation

We study the quantum noise in optical measurements performed with pixel like detectors, such as positionning a laser beam with a quadrant detector. This leads to the increase in sensitivity of such measurements beyond the shot noise limit.

Transverse modes mixing cavityy

References
  C. Fabre, A. Maître, J.-B. Fouet, Optics Letters 25, 76 (2000)
[article]
 

N. Treps, U. Andersen, B. Buchler, P. K. Lam, A. Maître, H.-A. Bachor, C. Fabre, "Crossing the standard quantum limit for high sensitivity measurements in optical images using non classical light" , Phys. Rev. Lett. 88, 203601 (2002)
[article]


Nicolas Treps, Nicolai Grosse, Warwick P. Bowen, Claude Fabre, Hans-A. Bachor, and Ping Koy Lam, "A Quantum Laser Pointer", Science Aug 15 2003: 940-943.