US 12,367,049 B2
Quantum computing systems having a reconfigurable quantum processing unit
Nikolay Alekseyevich Kaliteevskiy, Saint-Petersburg (RU); Fedor Dmitrievich Kiselev, Saint-Petersburg (RU); and Michal Mlejnek, Big Flats, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Appl. No. 18/011,224
Filed by CORNING INCORPORATED, Corning, NY (US)
PCT Filed Jun. 17, 2021, PCT No. PCT/US2021/037801
§ 371(c)(1), (2) Date Dec. 19, 2022,
PCT Pub. No. WO2021/262519, PCT Pub. Date Dec. 30, 2021.
Claims priority of provisional application 63/044,615, filed on Jun. 26, 2020.
Prior Publication US 2023/0236846 A1, Jul. 27, 2023
Int. Cl. G06F 9/445 (2018.01); G06N 10/40 (2022.01); G02F 1/21 (2006.01); H04B 10/40 (2013.01); H04B 10/70 (2013.01)
CPC G06F 9/44505 (2013.01) [G06N 10/40 (2022.01); G02F 1/212 (2021.01); H04B 10/40 (2013.01); H04B 10/70 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A quantum computing system comprising:
a reconfigurable quantum processing unit optically coupled to a photon source and a photon detector, the reconfigurable quantum processing unit comprising a plurality of Mach-Zehnder interferometers (MZIs);
a controller communicatively coupled to the plurality of MZIs, wherein the controller is configured to generate a control signal to alter a phase setting of at least one of the plurality of MZIs and the plurality of MZIs are configured to alter a phase of one or more photons that traverse the plurality of MZIs; and
a quantum memory array comprising a plurality of quantum memories optically coupled to the plurality of MZIs, wherein each quantum memory is configured to absorb a photon received by the quantum memory from the reconfigurable quantum processing unit, the received photon comprising quantum information, and release a photon comprising the quantum information of the received photon into the reconfigurable quantum processing unit,
wherein the plurality of MZIs are arranged in an MZI lattice comprising:
a column of first boundary MZIs disposed along a first end of the reconfigurable quantum processing unit;
a column of second boundary MZIs disposed along a second end of reconfigurable quantum processing unit; and
one or more columns of interior MZIs positioned between the column of first boundary MZIs and the column of second boundary MZIs, and, wherein:
(i) the column of first boundary MZIs are optically coupled to an adjacent column of interior MZIs in an offset orientation and the column of second boundary MZIs are optically coupled to an adjacent column of interior MZIs in an offset orientation; or
(ii) wherein each first boundary MZI is optically coupled to at least one quantum memory of the quantum memory array such that photons directed from an individual first boundary MZI are received by at least one quantum memory.