dorsal/arxiv
View SchemaQuantum key distribution in the Holevo limit
| Authors | Adan Cabello |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0007064 |
| URL | https://arxiv.org/abs/quant-ph/0007064 |
| DOI | 10.1103/PhysRevLett.85.5635 |
| Journal | Phys. Rev. Lett. 85 (2000) 5635-5638 |
Abstract
A theorem by Shannon and the Holevo theorem impose that the efficiency of any protocol for quantum key distribution, $\cal E$, defined as the number of secret (i.e., allowing eavesdropping detection) bits per transmitted bit plus qubit, is ${\cal E} \le 1$. The problem addressed here is whether the limit ${\cal E} =1$ can be achieved. It is showed that it can be done by splitting the secret bits between several qubits and forcing Eve to have only a sequential access to the qubits, as proposed by Goldenberg and Vaidman. A protocol with ${\cal E} =1$ based on polarized photons and in which Bob's state discrimination can be implemented with linear optical elements is presented.
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"abstract": "A theorem by Shannon and the Holevo theorem impose that the efficiency of any\nprotocol for quantum key distribution, $\\cal E$, defined as the number of\nsecret (i.e., allowing eavesdropping detection) bits per transmitted bit plus\nqubit, is ${\\cal E} \\le 1$. The problem addressed here is whether the limit\n${\\cal E} =1$ can be achieved. It is showed that it can be done by splitting\nthe secret bits between several qubits and forcing Eve to have only a\nsequential access to the qubits, as proposed by Goldenberg and Vaidman. A\nprotocol with ${\\cal E} =1$ based on polarized photons and in which Bob\u0027s state\ndiscrimination can be implemented with linear optical elements is presented.",
"arxiv_id": "quant-ph/0007064",
"authors": [
"Adan Cabello"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.85.5635",
"journal_ref": "Phys. Rev. Lett. 85 (2000) 5635-5638",
"title": "Quantum key distribution in the Holevo limit",
"url": "https://arxiv.org/abs/quant-ph/0007064"
},
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