Patent · US Active

Bell state measurement

US10805011B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Assignee

NOKIA TECHNOLOGIES OY · FI

Inventors

David Bitauld · Cambridge, GB
Enrique Martin-Lopez · Cambridge, GB

Key dates

Filing date	Mar 29, 2016
Grant date	Oct 13, 2020
Priority date	—
Expiry date	Oct 3, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/217
WIPO fieldOptics
WIPO sectorInstruments

Abstract

According to an example aspect of the present invention, there is provided an apparatus comprising a first and a second polarization beam splitter-rotator (140, 142), together arranged to split two incoming polarization encoded qubits into four first optical modes, the apparatus being configured to align polarizations of the four first optical modes, an interferometer stage (150) configured to obtain, from the four first optical modes, four second optical modes, and four detectors (160) arranged to receive at least one of the four second optical modes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.