搜索结果: 1-15 共查到“物理学其他学科 Entanglement”相关记录16条 . 查询时间(0.09 秒)
Multiscale entanglement in ring polymers under spherical confinement
Multiscale entanglement ring polymers spherical confinement
2011/9/13
The interplay of geometrical and topological entanglement in semiflexible knotted polymer rings inside a spherical cavity is investigated using advanced numerical methods. By using stringent and robus...
The tripartite entanglement is examined when one of the three parties moves with a uniform acceleration with respect to other parties. As Unruh effect indicates, the tripartite entanglement exhibits ...
We present an approach to characterize genuine multiparticle entanglement using appropriate approximations in the space of quantum states. This leads to a criterion for entanglement which can easily b...
Universal parity effects in the entanglement entropy of XX chains with open boundary conditions
Universal parity effects entanglement entropy XX chains open boundary conditions
2010/11/11
We consider the Renyi entanglement entropies in the one-dimensional XX spin-chains with open boundary conditions in the presence of a magnetic field. In the case of a semi-infinite system and a block ...
Correlation and Entanglement of Multipartite States
Correlation Entanglement Multipartite States
2010/11/8
We derive a classification and a measure of classical- and quantum-correlation of multipartite qubit, qutrit, and in general, $n$-level systems, in terms of SU$(n)$ representations of density matrice...
We propose a holographic correspondence of the flat spacetime based on the behavior of the entanglement entropy and the correlation functions. The holographic dual theory turns out to be highly non-lo...
Completely mixed state is a critical point for three-qubit entanglement
Completely mixed state critical point three-qubit entanglement
2010/11/5
Pure three-qubit states have five algebraically independent and one algebraically dependent polynomial invariants under local unitary transformations and an arbitrary entanglement measure is a functi...
Continuous variables approach to entanglement creation and processing
Continuous variables entanglement squeezed states
2010/11/4
We apply the continuous variable approach to study entangled dynamics of coupled harmonic oscillators interacting with a thermal reservoir and to a deterministic creation of entanglement in an atomic...
Genuine Tripartite Entanglement in a Spin-Star Network at Thermal Equilibrium
Genuine Tripartite Entanglement Spin-Star Network Thermal Equilibrium
2010/10/29
In a recent paper [M. Huber {\it et al}, Phys. Rev. Lett. {\bf 104}, 210501 (2010)] new criteria to find out the presence of multipartite entanglement have been given. We exploit these tools in order ...
Squashed entanglement is a measure for the entanglement of bipartite quantum states. In this paper we present a lower bound for squashed entanglement in terms of the LOCC distance to the set of separa...
Minimal and Maximal Operator Spaces and Operator Systems in Entanglement Theory
operator space operator system quantum information theory entanglement
2010/11/11
We examine k-minimal and k-maximal operator spaces and operator systems, and investigate their relationships with the separability problem in quantum information theory. We show that the matrix norms ...
Strong entanglement causes low gate fidelity in inaccurate one-way quantum computation
one-way quantum computation Strong entanglement low gate fidelity
2010/3/10
We study how entanglement among the register qubits affects the gate fidelity in the one-way quantum computation if a measurement is inaccurate. We show that the mean gate fidelity is upper bounded by...
Universal nonlinear entanglement witnesses
nonlinear entanglement witnesses non-classical correlations
2010/3/10
We give a universal recipe for constructing nonlinear entanglement witnesses able to detect non-classical correlations in arbitrary systems of distinguishable and/or identical particles for an arbitra...
Continuous variable entanglement distillation of Non-Gaussian Mixed States
Continuous variable Non-Gaussian Mixed States
2010/3/10
Many different quantum information communication protocols such as teleportation, dense coding and entanglement based quantum key distribution are based on the faithful transmission of entanglement be...
Entanglement and symmetry in permutation symmetric states
Entanglement symmetry permutation symmetric states
2010/3/10
We investigate the relationship between multipartite entanglement and symmetry, focusing on permutation symmetric states. We use the Majorana representation, where these states correspond to points on...