Article
Quantum key distribution without alternative measurements
Author/s | Cabello Quintero, Adán |
Department | Universidad de Sevilla. Departamento de Física Aplicada II |
Publication Date | 2000-04-18 |
Deposit Date | 2024-02-15 |
Published in |
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Abstract | Entanglement swapping between Einstein-Podolsky-Rosen (EPR) pairs can be used to generate the same sequence of random bits in two remote places. A quantum key distribution protocol based on this idea is described. The ... Entanglement swapping between Einstein-Podolsky-Rosen (EPR) pairs can be used to generate the same sequence of random bits in two remote places. A quantum key distribution protocol based on this idea is described. The scheme exhibits the following features. (a) It does not require that Alice and Bob choose between alternative measurements, therefore improving the rate of generated bits by transmitted qubit. (b) It allows Alice and Bob to generate a key of arbitrary length using a single quantum system (three EPR pairs), instead of a long sequence of them. (c) Detecting Eve requires the comparison of fewer bits. (d) Entanglement is an essential ingredient. The scheme assumes reliable measurements of the Bell operator. |
Funding agencies | Universidad de Sevilla Junta de Andalucía |
Project ID. | OGICYT-191-97
FQM-239 |
Citation | Cabello Quintero, A. (2000). Quantum key distribution without alternative measurements. Physical Review A, 61 (5), 052312-1-052312-4. https://doi.org/10.1103/PhysRevA.61.052312. |
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