Book ChapterDOI
Quantum nondemolition measurement in optical communication theory
Tomohiko Uyematsui,Osamu Hirota,Kohichi Sakaniwa +2 more
- Vol. 378, pp 111-119
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TLDR
In this article, the authors described the treatment of QND measurement from the view point of optical communication theory, and obtains the following results:==================¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯============The state vector and the wave function for QND measurements are obtained by using standard quantum theory.Abstract:
This paper describes the treatment of QND measurement from the view point of the optical communication theory, and obtains the following results:
1.
The state vector and the wave function for a QND measurement is obtained by using standard quantum theory.
2.
The QND measurement is modeled by a specific channel in communication theory.
3.
The effect of QND measurement to the signal light is completely specified by the amplitude gain and the variances of quantum noises of the signal and probe lights.read more
References
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Journal ArticleDOI
Two-photon coherent states of the radiation field
TL;DR: In this paper, the concept of two-photon coherent states is introduced for applications in quantum optics, which is a simple generalization of the well-known minimum-uncertainty wave packets.
Journal ArticleDOI
On the measurement of a weak classical force coupled to a quantum mechanical oscillator. i. issues of principle
TL;DR: In this paper, the authors considered a new type of quantum nondemolition measurement called back-action-evading measurement, where the real part of the harmonic oscillator's complex amplitude is measured by a single transducer.
Journal ArticleDOI
Quantum Nondemolition Measurements
TL;DR: In this paper, the authors describe the new electronic techniques required for quantum nondemolition measurements and the theory underlying them, which may find application elsewhere in science and technology, such as quantum chemistry, quantum optics, or atomic, nuclear, and elementary particle physics.
Journal ArticleDOI
Quantum nondemolition measurement of the photon number via the optical Kerr effect
TL;DR: The measurement accuracy and the imposed phase noise of the signal wave satisfy Heisenberg's uncertainty principle with an equality sign, and a quantum nondemolition measurement scheme for the photon number is proposed.
Journal ArticleDOI
Quantum nondemolition detection of optical quadrature amplitudes.
TL;DR: In an optical fiber, nonlinear optical interactions couple the sideband modes of two strong pump waves at different frequencies just as required for a quantum non-demolition measurement as discussed by the authors.
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