Photon Pair Source

08044/TUB: Photon Pair Source


Electrically triggered single or entangled photon sources are needed for high security quantum cryptography. In addition, the mass market requires efficient electrically driven high-speed devices. A single or entangled photon source allows the use of common growth and processing techniques for fabrication.

We offer a method for producing a photon pair source in a simple and reproducible manner, which generates entangled photon pairs. This method offers a minimization of the fine structure splitting in quantum dots (QDs) to nearly zero using (1,1,1)-orientated semiconductor substrates.


Anwendungsmöglichkeiten / Possible applications:

The invention allows producing a single photon source which can be used for quantum cryptography.

Interested? Contact Us! Interested? Contact Us!
Show all techoffers Vorteile / Benefits:
  • Compact photon pair source
  • High repetition rate
  • Produces photons on demand
  • Simple and reproducible fabrication method
Entwicklungsstand / Development status:


Reifegrad / Maturity level:


Schlagworte / Tags:
entangled photons, photon pairs, QDs, quantum dots, single photons
Schutzrechte / Property rights:

US, DE, AT, CH, FR, GB - granted

Patentinhaber / Patent holder:

Technische Universität Berlin

Möglichkeiten der Zusammenarbeit / Possible cooperation:
  • R&D Cooperation
  • Patent Purchase
  • Licensing

Ansprechpartnerin / Contact Person:
Ina Krüger

Tel.: 030 314-75916
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