dorsal/arxiv
View SchemaLocal noise can enhance entanglement teleportation
| Authors | Ye Yeo |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0610125 |
| URL | https://arxiv.org/abs/quant-ph/0610125 |
| DOI | 10.1103/PhysRevA.78.022334 |
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.
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"abstract": "Recently we have considered two-qubit teleportation via mixed states of four\nqubits and defined the generalized singlet fraction. For single-qubit\nteleportation, Badziag {\\em et al.} [Phys. Rev. A {\\bf 62}, 012311 (2000)] and\nBandyopadhyay [Phys. Rev. A {\\bf 65}, 022302 (2002)] have obtained a family of\nentangled two-qubit mixed states whose teleportation fidelity can be enhanced\nby subjecting one of the qubits to dissipative interaction with the environment\nvia an amplitude damping channel. Here, we show that a dissipative interaction\nwith the local environment via a pair of time-correlated amplitude damping\nchannels can enhance fidelity of entanglement teleportation for a class of\nentangled four-qubit mixed states. Interestingly, we find that this enhancement\ncorresponds to an enhancement in the quantum discord for some states.",
"arxiv_id": "quant-ph/0610125",
"authors": [
"Ye Yeo"
],
"categories": [
"quant-ph"
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"doi": "10.1103/PhysRevA.78.022334",
"title": "Local noise can enhance entanglement teleportation",
"url": "https://arxiv.org/abs/quant-ph/0610125"
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