|
| related topics |
| {alice, bob, state} |
| {entanglement, phys, rev} |
| {bell, inequality, local} |
| {state, states, entangled} |
| {information, entropy, channel} |
| {cos, sin, state} |
| {state, phys, rev} |
| {time, decoherence, evolution} |
|
Local noise can enhance entanglement teleportation
Ye Yeo
abstract: Recently we have considered two-qubit teleportation via mixed states of four
qubits and defined the generalized singlet fraction. For single-qubit
teleportation, Badziag {\em et al.} [Phys. Rev. A {\bf 62}, 012311 (2000)] and
Bandyopadhyay [Phys. Rev. A {\bf 65}, 022302 (2002)] have obtained a family of
entangled two-qubit mixed states whose teleportation fidelity can be enhanced
by subjecting one of the qubits to dissipative interaction with the environment
via an amplitude damping channel. Here, we show that a dissipative interaction
with the local environment via a pair of time-correlated amplitude damping
channels can enhance fidelity of entanglement teleportation for a class of
entangled four-qubit mixed states. Interestingly, we find that this enhancement
corresponds to an enhancement in the quantum discord for some states.
- oai_identifier:
- oai:arXiv.org:quant-ph/0610125
- categories:
- quant-ph
- comments:
- 10 pages
- arxiv_id:
- quant-ph/0610125
- created:
- 2006-10-16
Full article ▸
|
|
| related documents |
| 0303098v1 |
| 9807069v1 |
| 0406179v1 |
| 0112111v1 |
| 0509189v2 |
| 0402099v1 |
| 0409195v1 |
| 0406219v2 |
| 0602016v3 |
| 0112079v1 |
| 0407120v1 |
| 0102004v2 |
| 0205088v1 |
| 0701079v1 |
| 0610258v1 |
| 0501093v1 |
| 0608156v1 |
| 0507218v1 |
| 0307193v1 |
| 0703193v2 |
| 0306171v1 |
| 0312115v1 |
| 0507194v1 |
| 0502144v1 |
| 0606242v3 |
|