Calibration of particle detectors
US8706437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2009 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Dec 10, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of calibrating an optical detector arrangement (38,42) comprises simultaneously generating a plurality of entangled photon pairs, such that one photon from each pair traverses a first path (36-38-42) and the other photon from each pair traverses a second path (36-40-44). The number of photons received along the first path is calculated using the detector arrangement (38,42), while the number of simultaneously-generated photons received along the second path is calculated using a second detector arrangement (40,44). These photon numbers are used to calculated an estimate of the detection efficiency (50) of the first detector arrangement (38,42).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.