The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2022
Filed:
May. 18, 2018
Københavns Universitet, Copenhagen K, DK;
Peter Lodahl, Birkerød, DK;
Chris Lennart Dreessen, Copenhagen S, DK;
Petru Tighineanu, Erlangen, DE;
Anders Søndberg Sørensen, Rødovre, DK;
Leonardo Midolo, Copenhagen Ø, DK;
Københavns Universitet, Copenhagen K, DK;
Abstract
The invention relates to coherent single photon sources that provide photons with a high degree of indistinguishability. It is a disadvantage of single photon sources based on QDs in nanophotonic structures that, even at low temperatures, acoustic vibrations interact with the QDs to reduce the coherence of the emitted spectrum. The invention uses mechanical clamping of the nanostructure to damp vibrations leading to a weaker QD—phonon coupling and a higher degree of indistinguishability between successively emitted photons. The clamp is mechanically connected to the length of the photonic nanostructure and has a stiffness and a size sufficient to suppress low frequency vibrations (ω≤10 GHz) in a combined structure of the clamp and the nanostructure.