Nonclassical correlations of photon number and field components in the vacuum state
نویسندگان
چکیده
منابع مشابه
Nonclassical correlations of photon number and field components in the vacuum state Holger
It is shown that the quantum jumps in the photon number n̂ from zero to one or more photons induced by backaction evasion quantum nondemolition measurements of a quadrature component x̂ of the vacuum light field state are strongly correlated with the quadrature component measurement results. This correlation corresponds to the operator expectation value 〈x̂n̂x̂〉 which is equal to one fourth for the ...
متن کاملNonclassical correlations of photon number and field components in the vacuum state
It is shown that the quantum jumps in the photon number n̂ from zero to one or more photons induced by backaction evasion quantum nondemolition measurements of a quadrature component x̂ of the vacuum light field state are strongly correlated with the quadrature component measurement results. This correlation corresponds to the operator expectation value 〈x̂n̂x̂〉 which is equal to one fourth for the ...
متن کاملNonclassical correlations between photon number and quadrature components of the light field
Finite resolution quantum nondemolition (QND) measurements allow a determination of light field properties while preserving some of the original quantum coherence of the input state. It is thus possible to measure correlations between the photon number and a quadrature component of the same light field mode. Nonclassical features emerge as photon number quantization is resolved. In particular, ...
متن کاملua nt - p h / 99 12 07 2 v 1 1 5 D ec 1 99 9 Nonclassical correlations of photon number and field components in the vacuum state
It is shown that the quantum jumps to one or more photons induced in the vacuum state of the light field by quantum nondemolition measurements of a quadrature component are strongly correlated with the quadrature measurement results. This correlation corresponds to the operator expectation value 〈x̂n̂x̂〉 which is equal to one fourth for the vacuum even though the photon number eigenvalue is zero. ...
متن کاملNonclassical correlations of phase noise and photon number in quantum nondemolition measurements
The continuous transition from a low resolution quantum nondemolition measurement of light field intensity to a precise measurement of photon number is described using a generalized measurement postulate. In the intermediate regime, quantization appears as a weak modulation of measurement probability. In this regime, the measurement result is strongly correlated with the amount of phase decoher...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2000
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.62.013806