Results 261 to 270 of about 4,915,138 (308)

Squeezing and superposition states

Physical Review A, 1987
We present a new class of radiation field states which exhibit squeezed fluctuations. This new class of states are formed by a simple implementation of the superposition principle and are fundamentally different from the conventional two-photon coherent squeezed states.
, Wódkiewicz, , Knight, , Buckle, , Barnett   +3 more
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Squeezed fermion states

Physical Review Letters, 1990
Summary: Fermionic squeezing is derived in analogy to squeezed light, but with two distinct features: (i) Intramode squeezing can be achieved by noise attenuation in the particle sector at the cost of noise amplification in the antiparticle sector (or vice versa).
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Generalized multimode squeezed states

Physical Review A, 1993
The notion of squeezing is generalized to the case of multimodes. The multimode generalized squeezing operator has similar algebraic properties to those of the single-mode case and reduces to the usual two-mode squeezing operator in the case of two modes.
, Lo, , Sollie
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Atomic states with spectroscopic squeezing

Physical Review A, 1994
The spectroscopic squeezing characteristics of the angular-momentum state exp(θ S z ) exp[-(iπ /2)S y ]|| S,m> are calculated. The parameter √2S ΔS x /|| >S z >> is shown to be less than or equal to 1 and takes the asymptotic value (1+S) -½ as θ → 0 if m⊗0.
, Agarwal, , Puri
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Squeezed states and Shannon entropy

Physical Review A, 1994
A wave-function approach to the interaction Hamiltonian for the degenerate parametric amplifier has been recently presented [C. G. Bollini and L. E. Oxman, Phys. Rev. A 47, 2339 (1993)]. We want to show here that a maximum entropy principle density matrix approach can be used to reobtain all the results shown in this reference, and also to avoid the ...
, Aliaga, , Crespo, , Proto
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Squeezed vacuum state in lossy channel as a squeezed thermal state

Modern Physics Letters B, 2015
In this paper, we alternatively study the evolution of squeezed vacuum state (SVS) in lossy channel by virtue of the phase space method. By using the formula of Wigner function (WF) in coherent representation and [Formula: see text] representation of quantum density operator, the WF formula in lossy channel is derived.
Hong-Chun Yuan, Xue-Xiang Xu
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‘‘Squeezed states’’ in Helmholtz optics

Physical Review A, 1993
Squeezed states have been described in optics with the mathematics of quantum mechanics. Yet, electromagnetic fields of a single color obey the Helmholtz equation, of which the Schrodinger equation is but the paraxial (parabolic) approximation. We extend the ordinary squeezed states to solutions of the Helmholtz equation that contain them as their ...
, Wolf, , Kurmyshev
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Squeezed States in Josephson Junctions

AIP Conference Proceedings, 2004
We consider the superconductive regime of a Josephson junction with an external biasing circuit. After recalling that the eigenvalue equation of the junction Hamiltonian HJ is a special case of the Mathieu equation, we diagonalize HJ in a suitable Fock space and prove that this leads quite naturally from the use of the two‐boson algebra.
RAFFA, Francesco Antonino, FAORO L, RASETTI, Mario   +2 more
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Dipole Squeezing and Spin Squeezed States

2016
In the preceding chapters, we have demonstrated how squeezed light applied to optical systems may lead to the prediction of subnatural linewidths in the radiation spectra and the possibility to improve the precision of measurements beyond the standard quantum limit .
Zbigniew Ficek, Ryszard Tanaś
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Quasiprobabilities based on squeezed states

Journal of Statistical Physics, 1988
We introduce quasiprobabilities based on the so-called squeezed states to represent the density operator of an oscillator. Such representations become especially useful for oscillators designed to display, strong excitation notwithstanding, pronounced quantum features such as squeezing of the quantum fluctuations of certain observables below the limit ...
F Haake, M Wilkens
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