Quantum nondemolition measurement of a light field component by a feedback compensated beam splitter

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dc.creatorHofmann, Holger F.
dc.creatorKobayashi, Takayoshi
dc.creatorFurusawa, Akira
dc.date2001-03-19
dc.date.accessioned2026-07-07T06:01:48Z
dc.date.available2026-07-07T06:01:48Z
dc.descriptionIn conventional quantum nondemolition measurements, the interaction between signal and probe preserves the measured variable. Alternatively, it is possible to restore the original value of the variable by feedback. In this paper, we describe a quantum nondemolition measurement of a quadrature component of the light field using a feedback compensated beam splitter. The noise induced by the vacuum port of the beam splitter is compensated by a linear feedback resulting in an effective amplification of the observed variable. This amplification is then be reversed by optical parametric amplification to restore the original value of the field component.
dc.description6 pages, including one figure
dc.identifierhttps://arxiv.org/abs/quant-ph/0103106
dc.identifierhttp://arxiv.org/abs/quant-ph/0103106
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/89387
dc.subjectQuantum Physics
dc.subjectOptics
dc.titleQuantum nondemolition measurement of a light field component by a feedback compensated beam splitter
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