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pro vyhledávání: '"Son, W"'
Test of nonlocality for a continuos-variable state based on arbitrary number of measurement outcomes
Publikováno v:
Phys. Rev. Lett. 97, 110401 (2006)
We propose a scheme to test Bell's inequalities for an arbitrary number of measurement outcomes on entangled continuous variable states. The Bell correlation functions are expressible in terms of phase-space quasiprobability functions with complex or
Externí odkaz:
http://arxiv.org/abs/quant-ph/0602119
Publikováno v:
Phys. Rev. Lett. 96, 060406 (2006)
We present generic Bell inequalities for multipartite multi-dimensional systems. The inequalities that any local realistic theories must obey are violated by quantum mechanics for even-dimensional multipartite systems. A large set of variants are sho
Externí odkaz:
http://arxiv.org/abs/quant-ph/0503164
Publikováno v:
Phys. Rev. Lett. 92, 197901 (2004)
We investigate the conditions to entangle two qubits interacting with local environments driven by a continuous-variable correlated field. We find the conditions to transfer the entanglement from the driving field to the qubits both in dynamical and
Externí odkaz:
http://arxiv.org/abs/quant-ph/0403180
Publikováno v:
Phys. Rev. A 70, 022320 (2004).
A key element in the architecture of a quantum information processing network is a reliable physical interface between fields and qubits. We study a process of entanglement transfer engineering, where two remote qubits respectively interact with enta
Externí odkaz:
http://arxiv.org/abs/quant-ph/0403126
There have recently been interests in transferring entanglement between two quantum systems in different Hilbert spaces. In particular, the study of entanglement transfer from a continuous-variable to a qubit system has a primary importance due to pr
Externí odkaz:
http://arxiv.org/abs/quant-ph/0310031
Publikováno v:
J. Phys. A: Math. Gen. 37 (2004) 11897-11910.
For the purpose of the nonlocality test, we propose a general correlation observable of two parties by utilizing local $d$-outcome measurements with SU($d$) transformations and classical communications. Generic symmetries of the SU($d$) transformatio
Externí odkaz:
http://arxiv.org/abs/quant-ph/0309193
The intermittency is investigated when the current reversal occurs in a deterministic inertia ratchet system. To determine which type the intermittency belongs to, we obtain the return map of velocities of particle using stroboscopic recording, and n
Externí odkaz:
http://arxiv.org/abs/nlin/0308028
Publikováno v:
Phys. Rev. A 67, 012106 (2003)
There have been theoretical and experimental studies on quantum nonlocality for continuous variables, based on dichotomic observables. In particular, we are interested in two cases of dichotomic observables for the light field of continuous variables
Externí odkaz:
http://arxiv.org/abs/quant-ph/0210110
Publikováno v:
journal of modern optics, 49, 1739 (2002)
We show that two qubits can be entangled by local interactions with an entangled two-mode continuous variable state. This is illustrated by the evolution of two two-level atoms interacting with a two-mode squeezed state. Two modes of the squeezed fie
Externí odkaz:
http://arxiv.org/abs/quant-ph/0110151
Publikováno v:
Phys. Rev. A 65, 032323 (2002)
A beam splitter is a simple, readily available device which can act to entangle the output optical fields. We show that a necessary condition for the fields at the output of the beam splitter to be entangled is that the pure input states exhibit nonc
Externí odkaz:
http://arxiv.org/abs/quant-ph/0106136