US 12,407,423 B2
Quantum optical communication using photon transmission from a vacuum chamber
Freek Theodorus Molkenboer, Heerjansdam (NL)
Assigned to Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO, 's-Gravenhage (NL)
Appl. No. 18/274,669
Filed by Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO, 's-Gravenhage (NL)
PCT Filed Feb. 7, 2022, PCT No. PCT/NL2022/050059
§ 371(c)(1), (2) Date Jul. 27, 2023,
PCT Pub. No. WO2022/169366, PCT Pub. Date Aug. 11, 2022.
Claims priority of application No. 21155826 (EP), filed on Feb. 8, 2021.
Prior Publication US 2024/0097795 A1, Mar. 21, 2024
Int. Cl. H04B 10/00 (2013.01); H04B 10/70 (2013.01); H04J 14/00 (2006.01)
CPC H04B 10/70 (2013.01) 16 Claims
OG exemplary drawing
 
1. A method of producing a photon in an optical communication fiber outside a vacuum chamber, the photon being entangled with a local state of a photon source in the vacuum chamber, the method comprising:
supplying ionized gas and/or gaseous radicals in a part of an optical path for the photon between the photon source and the optical communication fiber, wherein the part of the optical path is part of a vacuum space in the vacuum chamber; and
subsequently generating the photon from the photon source.