Results 221 to 230 of about 11,518 (264)

Statistical fractional-photon squeezed states

Physical Review A, 1989
We construct a large class of squeezed states realized in terms of density matrices. The moments of the canonical variable q^ and the number operator n^ distributions are analytically evaluated. The new states can be simultaneously squeezed in q^ and n^ to any desired amount and exhibit almost Gaussian shape in the former and strongly sub-Poisson ...
, D'Ariano, , Sterpi
openaire   +2 more sources

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
openaire   +2 more sources

Dual squeezed states

JETP Letters, 2012
Collective operators corresponding to two different algebras have been introduced for a simple system consisting of a single two-level atom and a high-quality cavity mode. The generators of the first algebra satisfy boson commutation relations, whereas the generators of the second algebra have been obtained by polynomial deformation of su(2) algebra ...
openaire   +1 more source

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
openaire   +1 more source

STEADY-SQUEEZING STATES

International Journal of Modern Physics B, 1993
Wave functions have been determined which realize constant squeezing (steady-squeezing states) for a quadrature component of the oscillator with a quadratic self-coupling at an á priori given initial complex amplitude of the oscillator. The set of these wave functions forms a kernel of a special generating operator and is divided into two mutually ...
openaire   +1 more source

Phase distributions of squeezed number states and squeezed thermal states

Quantum Optics: Journal of the European Optical Society Part B, 1993
Phase properties of squeezed number states and squeezed thermal states are studied. Exact analytical formulae for phase distributions based on different phase approaches are derived and illustrated graphically. It is shown that the phase quasiprobability distribution P(W)( theta ) associated with the Wigner function does not depend on the photon number
A V Chizhov, Ts Gantsog, B K Murzakhmetov   +2 more
openaire   +1 more source

Coordinate representation of squeezed states

Physical Review A, 1988
We obtain the wave function in the coordinate representation of the one-mode squeezed states || ζ, α>=exp(ζa ^2 -ζa 2 )exp(αa^-αa)||0>. The wave function is a displaced Gaussian with center and width depending upon the parameters α and ζ.
, Rai, , Mehta
openaire   +2 more sources

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
openaire   +2 more sources

Properties of Squeezed Binomial States and Squeezed Negative Binomial States

Journal of Modern Optics, 1991
The effect of squeezing on binomial and negative binomial state has been studied in terms of quasiprobability of Wigner function and their photon number distributions. The results presented for squeezed binomial (negative binomial) states may be useful when one makes transients from squeezed coherent states to squeezed number (quasi- thermal) states.
Amitabh Joshi, S. V. Lawande
openaire   +1 more source

Generating superposition of squeezed states and photon-added squeezed states

Physica Scripta
Abstract The scheme of an arrangement is considered for the preparation of some non-classical superposed states from squeezed states by using the optical parametric amplifier (OPA) apparatus, which is based on an idea recently proposed to generate photon-added states from the coherent states of light.
M Bohloul, A Dehghani, H Fakhri
openaire   +1 more source