Results 21 to 30 of about 124,365 (283)

Continuous pumping and control of mesoscopic superposition state in a lossy QED cavity [PDF]

open access: yes, 2000
Here we consider the continuous pumping of a dissipative QED cavity and derive the time-dependent density operator of the cavity field prepared initially as a superposition of mesoscopic coherent states. The control of the coherence of this superposition
B. R. Mollow   +27 more
core   +2 more sources

Quantum state engineering by a coherent superposition of photon subtraction and addition [PDF]

open access: yes, 2010
We study a coherent superposition of field annihilation and creation operator acting on continuous variable systems and propose its application for quantum state engineering.
Lee, Su-Yong, Nha, Hyunchul
core   +3 more sources

Does gravity induce wavefunction collapse? An examination of Penrose's conjecture [PDF]

open access: yes, 2013
According to Penrose, the fundamental conflict between the superposition principle of quantum mechanics and the principle of general covariance of general relativity entails the existence of wavefunction collapse, e.g.
Gao, Shan
core   +3 more sources

Coherent and incoherent superposition of transition matrix elements of the squeezing operator

open access: yesNew Journal of Physics, 2022
We discuss the general matrix elements of the squeezing operator between number eigenstates of a harmonic oscillator (which may also represent a quantized mode of the electromagnetic radiation).
Sándor Varró
doaj   +1 more source

Construction and applications of the Dirichlet-to-Neumann operator in transmission line modeling [PDF]

open access: yes, 2009
The Dirichlet-to-Neumann (DIN) operator is a useful tool in the characterization of interconnect structures. in. combination with the Method of Moments; it con.
De Zutter, Daniël, Demeester, Thomas
core   +1 more source

Multi-scale homogenization with bounded ratios and Anomalous Slow Diffusion [PDF]

open access: yes, 2002
We show that the effective diffusivity matrix $D(V^n)$ for the heat operator $\partial_t-(\Delta/2-\nabla V^n \nabla)$ in a periodic potential $V^n=\sum_{k=0}^n U_k(x/R_k)$ obtained as a superposition of Holder-continuous periodic potentials $U_k$ (of ...
Ben-Arous, Gérard, Owhadi, Houman
core   +3 more sources

On Generalized Step-Functions and Superposition Operators [PDF]

open access: yesgmj, 2004
Abstract For a given σ-ideal of sets, the notion of a generalized stepfunction is introduced and investigated in connection with the problem of sup-measurability of certain functions of two variables, regarded as superposition operators.
openaire   +3 more sources

Uniformly Continuous Superposition Operators In The Space Of Functions Of Bounded n-Dimensional Φ-Variation

open access: yesDemonstratio Mathematica, 2014
We prove that if a superposition operator maps a subset of the space of all metric-vector-space-valued-functions of bounded n-dimensional Φ-variation into another such space, and is uniformly continuous, then the generating function of the operator is an
Bracamonte Mireya   +3 more
doaj   +1 more source

Consistent use of paradoxes in deriving constraints on the dynamics of physical systems and of no-go-theorems [PDF]

open access: yes, 1995
The classical methods used by recursion theory and formal logic to block paradoxes do not work in quantum information theory. Since quantum information can exist as a coherent superposition of the classical ``yes'' and ``no'' states, certain tasks which ...
Albert   +59 more
core   +3 more sources

On Nonlinear Vekua Type Equations

open access: yesNonlinear Analysis, 2006
Nonlinear Vekua-Bers type differential equations are studied on the base of certain methods of nonlinear analysis. A survey of recent results in the area is presented.
S. V. Rogosin
doaj   +1 more source

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