搜索结果: 106-120 共查到“物理学 entanglement”相关记录209条 . 查询时间(0.254 秒)
Entanglement dynamics of two qubits under the influence of external kicks and Gaussian pulses
Entanglement dynamics two qubits influence external kicks Gaussian pulses
2010/10/19
We have investigated the dynamics of entanglement between two spin-1/2 qubits that are sub-
ject to independent kick and Gaussian pulse type external magnetic elds analytically as well as numericall...
Entanglement evolution of non-trace-preserving maps
Entanglement evolution non-trace-preserving maps
2010/10/21
By solving the Schrodinger equation one obtains the whole energy spectrum, both the bound and
the continuum states. If the Hamiltonian depends on a set of parameters, these could be tuned to a trans...
Signal Enhancement and Background Suppression Using Interference and Entanglement
Signal Enhancement Background Suppression
2010/3/10
We describe a two-photon absorption process that is excited by entangled pairs but not non-entangled pairs with the same energy and polarization. Photon states can be selected so that in the non-entan...
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...
Spatial multipartite entanglement and localization of entanglement
localization of entanglement electromagnetic field
2010/3/10
We present a simple model together with its physical implementation which allows one to generate multipartite entanglement between several spatial modes of the electromagnetic field. It is based on pa...
We discuss quantum entanglement in the context of the thermodynamic arrow of time. We review the role of correlations in entropy-decreasing events and prove that the occurrence of a transformation bet...
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...
Energy-Entanglement Relation for Quantum Energy Teleportation
Energy-Entanglement Quantum Energy Teleportation
2010/3/10
Protocols of quantum energy teleportation (QET), while retaining causality and local energy conservation, enable the transportation of energy from a subsystem of a many-body quantum system to a distan...
Quantum entanglement and entropy in particle creation
Quantum entanglement particle creation entropy
2010/3/18
We investigate the basic theoretical issues in the quantum entanglement of particle pairs created from the vacuum in a time-dependent background field or spacetime. Similar to entropy generation from ...
Entanglement evolution of continuous variable quantum states
Entanglement evolution continuous variable quantum states
2010/3/10
We show when one of the modes of a initially bipartite Gaussian pure state interacts with a Gaussian noisy channel $\uppercase\expandafter{\romannumeral1}\otimes \$$, the evolution of entanglement can...
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...
Heralded Entanglement of Arbitrary Degree in Remote Qubits
Heralded Entanglement Arbitrary Degree Remote Qubits
2010/4/8
Incoherent scattering of photons off two remote atoms with a Lambda-level structure is used as a basic Young-type interferometer to herald long-lived entanglement of an arbitrary degree. The degree of...
Bright and Dark periods in the Entanglement Dynamics of Interacting Qubits in Contact with the Environment
Bright and Dark periods Entanglement Dynamics Interacting Qubits Environment
2010/4/8
Interaction among the qubits are basis to many quantum logic operations. We report how such inter-qubit interactions can lead to new features, in the form of bright and dark periods in the entanglemen...
Spatial entanglement using quantum walk on many body system
Spatial entanglement quantum body system
2010/4/7
Evolution of many particles on a one dimensional lattice subjected to quantum walk can cause spatial entanglement in the lattice position which can be exploited for quantum information/communication p...