Quantum random number generator
US9335973B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 3, 2014 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Sep 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/588
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A quantum random number generator (QRNG) and a photon generator for a QRNG are provided. The photon generator may be operated in a spontaneous mode below a lasing threshold to emit photons. Photons emitted from the photon generator may have at least one random characteristic, which may be monitored by the QRNG to generate a random number. In one embodiment, the photon generator may include a photon emitter and an amplifier coupled to the photon emitter. The amplifier may enable the photon generator to be used in the QRNG without introducing significant bias in the random number and may enable multiplexing of multiple random numbers. The amplifier may also desensitize the photon generator to fluctuations in power supplied thereto while operating in the spontaneous mode. In one embodiment, the photon emitter and amplifier may be a tapered diode amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.