US 11,810,606 B2
Apparatus comprising one or more photonic memories
Richard Murray, London (GB); Joshua Nunn, Bath (GB); Robert Francis-Jones, London (GB); Tom Parker, London (GB); and Krzysztof Kaczmarek, London (GB)
Assigned to ORCA Computing Limited, London (GB)
Appl. No. 18/025,624
Filed by ORCA Computing Limited, London (GB)
PCT Filed Sep. 21, 2021, PCT No. PCT/GB2021/052447
§ 371(c)(1), (2) Date Mar. 9, 2023,
PCT Pub. No. WO2022/058757, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 2014884 (GB), filed on Sep. 21, 2020.
Prior Publication US 2023/0245702 A1, Aug. 3, 2023
Int. Cl. G11C 13/04 (2006.01); G06N 10/20 (2022.01); G06N 10/40 (2022.01); G02B 5/26 (2006.01); G02F 1/21 (2006.01); G02F 1/01 (2006.01)
CPC G11C 13/048 (2013.01) [G06N 10/20 (2022.01); G06N 10/40 (2022.01); G02B 5/26 (2013.01); G02F 1/0136 (2013.01); G02F 1/21 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for storing one or more photons, the apparatus comprising:
I) a plurality of photonic elements for reflecting electromagnetic radiation; at least two of the plurality of photonic elements forming a photonic cavity; the plurality of photonic elements comprising:
at least one photonic element for receiving first electromagnetic radiation from outside the photonic cavity and transmitting the received first electromagnetic radiation into the photonic cavity;
at least one photonic element for receiving second electromagnetic radiation from outside the photonic cavity and transmitting the received second electromagnetic radiation into the photonic cavity;
II) a photonic memory disposed in the photonic cavity, the photonic memory comprising an atomic system configured to:
receive at least one photon of the first electromagnetic radiation, the photon having a field;
receive the second electromagnetic radiation and receive third electromagnetic radiation;
store at least a portion of the field of the photon in the atomic system via an atomic transition using the photon and the received second electromagnetic radiation;
emit the stored portion of the field of the photon upon receiving the third electromagnetic radiation;
the apparatus further configured to:
direct the photon into the photonic memory, after being reflected back into the photonic cavity by at least one of the plurality of photonic elements;
output the emitted portion of the field into the photonic cavity;
control a photon flux density of the third electromagnetic radiation to control a superposition of the said stored field portion of the photon in states of:
a) continued storage by the atomic system;
b) emitted by the atomic system.