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Werner state

A Werner state is a d × d-dimensional bipartite quantum state density matrix that is invariant under all unitary operators of the form . That is, it… Expand
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Papers overview

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2019
2019
We study the entanglement property of a free Dirac field in a Werner state as seen by two relatively accelerated parties. We… Expand
2018
2018
A master equation has been constructed for a global system–bath interaction in the both absence and presence of non-Markovian… Expand
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2015
2015
Teleportation is a well known protocol to transfer one qubit between users sharing a Bell pair. By treating teleportation as a… Expand
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2009
2009
We consider the problem of computing the family of operator norms recently introducedin [1]. We develop a family of semidefinite… Expand
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2006
2006
The tomographic approach to quantum mechanics is revisited as a direct tool to investigate the violation of Bell-like… Expand
2006
2006
We give explicit expressions for entanglement measures of Werner states in arbitrary dimensions in terms of concurrence and… Expand
Review
2004
Review
2004
The positive and not completely positive maps of density matrices, which are contractive maps, are discussed as elements of a… Expand
2004
2004
Bell-inequality violation and entanglement, measured by Wootters' concurrence and negativity, of two qubits initially in Werner… Expand
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2002
2002
We investigate the separability, nonlocality, and squeezing of the continuous-variable analog of the Werner state: a mixture of a… Expand
2001
2001
Abstract Entanglement is a critical resource used in many current quantum information schemes. As such entanglement has been… Expand