Quantum cryptography with fewer random numbers
US7606367B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Mar 9, 2005 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Apr 27, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0858
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for implementing a quantum cryptography system that requires fewer random bits. The emitter divides the key in blocks of bits. Instead of changing the basis for each bit of key sent by the emitter, the same basis is used for all the bits within a block. By doing this, the rate of random bits of information necessary for the implementation of a secure quantum cryptography link is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.