Results 31 to 40 of about 8,923 (240)

Unconditional quantum cloning of coherent states with linear optics

open access: yes, 2005
A scheme for optimal Gaussian cloning of optical coherent states is proposed and experimentally demonstrated. Its optical realization is based entirely on simple linear optical elements and homodyne detection.
E. Arthur   +3 more
core   +2 more sources

Roundoff errors in the problem of computing Cauchy principal value integrals

open access: yes, 2015
We investigate the possibility of fast, accurate and reliable computation of the Cauchy principal value integrals $\mathrm{P}\!\int_{a}^{b} f(x)(x-\tau)^{-1} dx$ $(a < \tau < b)$ using standard adaptive quadratures. In order to properly control the error
Keller, Paweł, Wróbel, Iwona
core   +1 more source

Critical Poles and Third-Order Nonlinear Differential Equations

open access: yesMathematics
The paper deals with the results of a study of a third-order nonlinear differential equation with moving singular points and critical poles. So far, this type of equation cannot be solved in quadratures.
Victor Orlov
doaj   +1 more source

Constructing finite dimensional codes with optical continuous variables

open access: yes, 2004
We show how a qubit can be fault-tolerantly encoded in the infinite-dimensional Hilbert space of an optical mode. The scheme is efficient and realizable with present technologies.
Mancini, S.   +3 more
core   +1 more source

Joint measurements via quantum cloning [PDF]

open access: yes, 2000
We explore the possibility of achieving optimal joint measurements of noncommuting observables on a single quantum system by performing conventional measurements of commuting self adjoint operators on optimal clones of the original quantum system.
Appleby D M   +15 more
core   +2 more sources

Homodyne Bell's inequalities for entangled mesoscopic superpositions

open access: yes, 2001
We present a scheme for demonstrating violation of Bell's inequalities using a spin-1/2 system entangled with a pair of classically distinguishable wave packets in a harmonic potential.
A. Gilchrist   +35 more
core   +1 more source

A Superhydrophobic 3D Cell Culture System Reveals the Mechanobiological Role of Cancer‐Associated Fibroblasts in Prostate Cancer Metastasis

open access: yesAdvanced Healthcare Materials, EarlyView.
A superhydrophobic 3D cell culture platform enables rapid and consistent formation of heterotypic tumor–stroma clusters, and reveals how physiological shear conditions influence metastatic signaling. Mechanical stimulation of cancer‐associated fibroblasts promotes sustained cytokine secretion and survival‐promoting pathways, showing how multicellular ...
Alexandria T. Carter   +5 more
wiley   +1 more source

Quantum cloning at the light-atoms interface: copying a coherent light state into two atomic quantum memories

open access: yes, 2004
A scheme for the optimal Gaussian cloning of coherent light states at the light-atoms interface is proposed. The distinct feature of this proposal is that the clones are stored in an atomic quantum memory, which is important for applications in quantum ...
Cerf, Nicolas J.   +2 more
core   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

open access: yesAdvanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha   +14 more
wiley   +1 more source

Thermodynamics of Quadrature Trajectories in Open Quantum Systems

open access: yes, 2012
We apply a large-deviation method to study the diffusive trajectories of the quadrature operators of light within a reservoir connected to dissipative quantum systems. We formulate the study of quadrature trajectories in terms of characteristic operators
Garrahan, Juan P.   +3 more
core   +1 more source

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