dorsal/arxiv
View SchemaOptimal teleportation with a mixed state of two qubits
| Authors | F. Verstraete, H. Verschelde |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0303007 |
| URL | https://arxiv.org/abs/quant-ph/0303007 |
| DOI | 10.1103/PhysRevLett.90.097901 |
| Journal | Phys. Rev. Lett. 90, 097901 (2003) |
Abstract
We consider a single copy of a mixed state of two qubits and derive the optimal trace-preserving local operations assisted by classical communication (LOCC) such as to maximize the fidelity of teleportation that can be achieved with this state. These optimal local operations turn out to be implementable by one-way communication, and always yields a teleportation fidelity larger than 2/3 if the original state is entangled. This maximal achievable fidelity is an entanglement measure and turns out to quantify the minimal amount of mixing required to destroy the entanglement in a quantum state.
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"abstract": "We consider a single copy of a mixed state of two qubits and derive the\noptimal trace-preserving local operations assisted by classical communication\n(LOCC) such as to maximize the fidelity of teleportation that can be achieved\nwith this state. These optimal local operations turn out to be implementable by\none-way communication, and always yields a teleportation fidelity larger than\n2/3 if the original state is entangled. This maximal achievable fidelity is an\nentanglement measure and turns out to quantify the minimal amount of mixing\nrequired to destroy the entanglement in a quantum state.",
"arxiv_id": "quant-ph/0303007",
"authors": [
"F. Verstraete",
"H. Verschelde"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.90.097901",
"journal_ref": "Phys. Rev. Lett. 90, 097901 (2003)",
"title": "Optimal teleportation with a mixed state of two qubits",
"url": "https://arxiv.org/abs/quant-ph/0303007"
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