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Habilitation à diriger des recherches

Optique Quantique Multimode en Variables Continues

Abstract : We consider the quantum description of light in the continuous
wave regime, where photons are not distinguishable individually.
In the small quantum fluctuations limit, we intend to increase
both the richness and possible applications of non-classical
light by the increase of the number of modes -or degree of
freedom- involved in the detection process. This is what is called
multimode quantum optics. Within this frame, we describe a
practical way to extract the number of relevant modes in a beam of
light. Then, measurement theory is reconsidered to link the
multimode character of light to information processing with a beam
of light. Limits to optical measurement are thus redefined, and
quantum entanglement for any measurable observable described.
Experiments involving more and more optical modes are demonstrated
to illustrate that theory : twin beams, entanglement and quantum
teleportation measurement, polarization squeezed and entangled
state generation, nano-positioning of a beam of light beyond the
standard quantum limit, spatial entanglement, noiseless
amplification of images and multimode quantum optics with
frequency combs. On the way, we evoke the possible applications to
the increase of optical read-out capacity and information
transfer, to parallel processing of quantum information and to
quantum imaging and metrology.
Document type :
Habilitation à diriger des recherches
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Contributor : Nicolas Treps <>
Submitted on : Sunday, February 18, 2007 - 8:35:22 AM
Last modification on : Thursday, December 10, 2020 - 12:38:36 PM
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  • HAL Id : tel-00131679, version 1


Nicolas Treps. Optique Quantique Multimode en Variables Continues. Physique Atomique [physics.atom-ph]. Université Pierre et Marie Curie - Paris VI, 2006. ⟨tel-00131679⟩



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