dorsal/arxiv
View SchemaOptimal quantum repeaters for qubits and qudits
| Authors | Marco G. Genoni, Matteo G. A. Paris |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0501061 |
| URL | https://arxiv.org/abs/quant-ph/0501061 |
| DOI | 10.1103/PhysRevA.71.052307 |
| Journal | Phys. Rev. A vol 71, 052307 (2005). |
Abstract
A class of optimal quantum repeaters for qubits is suggested. The schemes are minimal, i.e. involve a single additional probe qubit, and optimal, i.e. provide the maximum information adding the minimum amount of noise. Information gain and state disturbance are quantified by fidelities which, for our schemes, saturate the ultimate bound imposed by quantum mechanics for randomly distributed signals. Special classes of signals are also investigated, in order to improve the information-disturbance trade-off. Extension to higher dimensional signals (qudits) is straightforward.
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"abstract": "A class of optimal quantum repeaters for qubits is suggested. The schemes are\nminimal, i.e. involve a single additional probe qubit, and optimal, i.e.\nprovide the maximum information adding the minimum amount of noise. Information\ngain and state disturbance are quantified by fidelities which, for our schemes,\nsaturate the ultimate bound imposed by quantum mechanics for randomly\ndistributed signals. Special classes of signals are also investigated, in order\nto improve the information-disturbance trade-off. Extension to higher\ndimensional signals (qudits) is straightforward.",
"arxiv_id": "quant-ph/0501061",
"authors": [
"Marco G. Genoni",
"Matteo G. A. Paris"
],
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"quant-ph"
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"doi": "10.1103/PhysRevA.71.052307",
"journal_ref": "Phys. Rev. A vol 71, 052307 (2005).",
"title": "Optimal quantum repeaters for qubits and qudits",
"url": "https://arxiv.org/abs/quant-ph/0501061"
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