Method and apparatus for quantum information processing
US5917322A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1996 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Oct 8, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An approach to processing quantum information uses a bulk ensemble of a very large number of identical entities as its source of quantum degrees of freedom. The information is represented as the deviation from uniform population probability for at least one of the quantum states of the ensemble. Coherences between quantum states, created when the ensemble is modified in a way that removes it from thermal equilibrium can serve as effective degrees of freedom. A bulk thermal ensemble of nuclear spins in a static magnetic field is treated using nuclear magnetic resonance pulses for preparation of an initial pure state, and effecting arbitrary single-spin and coupled multi-spin rotations. Readout of the result is accomplished by observation of the magnetization of the ensemble.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.