Results 31 to 40 of about 590,145 (336)
Applied Sciences, 2020 We demonstrated a two-color quantum correlation between the down-conversion beams with a telecommunication wavelength at 1.5 μm and mid-infrared wavelength at 3.3 μm generated by a singly resonant optical parametric oscillator (SRO) operated above the ...
Dandan Nie +3 more
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Universe, 2020 In this work, we study the impact of quantum entanglement on the two-point correlation function and the associated primordial power spectrum of mean square vacuum fluctuation in a bipartite quantum field theoretic system.
Sayantan Choudhury, Sudhakar Panda
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Are quantum correlations symmetric?
Quantum Information and Computation, 2010 We provide operational definition of asymmetry of entanglement: An entangled state contains asymmetric entanglement if its subsystems can not be exchanged (swapped) by means of local operations and classical communication. We show that in general states have asymmetric entanglement.
HorodeckiPaweł +2 more
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Can quantum correlations be completely quantum? [PDF]
Journal of Physics A: Mathematical and Theoretical, 2008 8 pages, 5 figures, REVTeX ...
Barbara Synak-Radtke, Łukasz Pankowski
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The Einstein–Podolsky–Rosen Steering and Its Certification
Entropy, 2019 The Einstein–Podolsky–Rosen (EPR) steering is a subtle intermediate correlation between entanglement and Bell nonlocality. It not only theoretically completes the whole picture of non-local effects but also practically inspires novel quantum ...
Yi-Zheng Zhen +4 more
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Fluctuation, time-correlation function and geometric Phase [PDF]
, 1998 We establish a fluctuation-correlation theorem by relating the quantum fluctuations in the generator of the parameter change to the time integral of the quantum correlation function between the projection operator and force operator of the ``fast ...
A. Mostafazadeh +26 more
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Complete condition for nonzero quantum correlation in continuous variable systems
New Journal of Physics, 2015 Quantum correlation provides a promising measure beyond entanglement. Here, we propose a necessary and sufficient condition for nonzero quantum correlation in continuous variable systems, which is simple and easy to perform in terms of a marker Q _r . In
Chengjie Zhang +5 more
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Effects of environmental parameters to total, quantum and classical correlations [PDF]
, 2006 We quantify the total, quantum, and classical correlations with entropic measures, and quantitatively compare these correlations in a quantum system, as exemplified by a Heisenberg dimer which is subjected to the change of environmental parameters ...
Anteneodo C +9 more
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Temperature Correlations of Quantum Spins [PDF]
Physical Review Letters, 1993 We consider isotropic XY model in the transverse magnetic field on the one dimensional lattice. Another name of the model in Heisenberg XXO model of spin 1/2.We solved long standing problem of evaluation of temperature correlations. We first represent correlation function in the model, by means of completely integrable differential equation.
Nikita Andreevich Slavnov +3 more
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Quantum correlations with no causal order [PDF]
Nature Communications, 2012 The idea that events obey a definite causal order is deeply rooted in our understanding of the world and at the basis of the very notion of time. But where does causal order come from, and is it a necessary property of nature? We address these questions from the standpoint of quantum mechanics in a new framework for multipartite correlations which does
Ognyan Oreshkov +3 more
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