Results 71 to 80 of about 613,927 (273)
Advanced quantum noise correlations
New Journal of Physics, 2014 We use the quantum correlations of twin beams of light to investigate the fundamental addition of noise when one of the beams propagates through a fast-light medium based on phase-insensitive gain.
Ulrich Vogl +6 more
doaj +1 more source
Extremal quantum correlation generation using a hybrid channel
Scientific Reports, 2023 The preservation of quantum correlations requires optimal procedures and the proper design of the transmitting channels. In this regard, we address designing a hybrid channel comprising a single-mode cavity accompanied by a super-Gaussian beam and local ...
Atta ur Rahman +3 more
doaj +1 more source
Quantum correlations in topological quantum phase transitions [PDF]
, 2009 We study the quantum correlations in a 2D system that possesses a topological quantum phase transition. The quantumness of two-body correlations is measured by quantum discord. We calculate both the correlation of two local spins and that of an arbitrary spin with the rest of the lattice. It is notable that local spins are classically correlated, while
arxiv +1 more source
Direct Measure of Quantum Correlation [PDF]
Phys. Rev. A,84, 062123(2011) .The authors should be Chang-shui Yu
and Haiqing Zhao, 2013 The quantumness of the correlation known as quantum correlation is usually measured by quantum discord. So far various quantum discords can be roughly understood as indirect measure by some special discrepancy of two quantities. We present a direct measure of quantum correlation by revealing the difference between the structures of classically and ...
arxiv +1 more source
Quantum Correlations in Biomolecules
Procedia Chemistry, 2011 AbstractIn this paper we identify quantum entanglement, quantum discord and classical correlations as the main classes of correlations present in many body systems, such as biomolecules. We show how to witness the presene of entanglement and quantum discord. All witnesses can be accessed with simple measurements and implemented with current technology.
Vlatko Vedral, Vlatko Vedral
openaire +2 more sources
Advanced Engineering Materials, EarlyView.Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
wiley +1 more source
Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet
npj Quantum MaterialsSkyrmion lattices (SkL) in centrosymmetric materials typically have a magnetic period on the nanometer-scale, so that the coupling between magnetic superstructures and the underlying crystal lattice cannot be neglected. We reveal the commensurate locking
Max Hirschberger +17 more
doaj +1 more source
Multipartite quantum correlations in open quantum systems
New Journal of Physics, 2013 In this paper, we present a measure of quantum correlation for a multipartite system, defined as the sum of the correlations for all possible partitions.
ZhiHao Ma +2 more
doaj +1 more source
Quantum correlations for anonymous metrology [PDF]
Quantum, 2019 We introduce the task of anonymous metrology, in which a physical parameter of an object may be determined without revealing the object's location. Alice and Bob share a correlated quantum state, with which one of them probes the object.
A. J. Paige, Benjamin Yadin, M. S. Kim
doaj +1 more source
Correlations and Work Statistics in Critical Quantum Systems [PDF]
arXiv, 2022 In this dissertation, we analyze equilibrium and out-of-equilibrium quantum phase transitions present in quantum spin-$\frac{1}{2}$ models, using a quantum information approach through quantum correlations and phase space formalism, and a quantum thermodynamic approach through the work statistics formalism.
arxiv