US 12,149,242 B1
Modular interconnected quantum photonic system
Mercedes Gimeno-Segovia, San Jose, CA (US); Christopher Sparrow, Mountain View, CA (US); and Ilya Vorobeichik, Los Gatos, CA (US)
Assigned to PsiQuantum, Corp., Palo Alto, CA (US)
Filed by PsiQuantum, Corp., Palo Alto, CA (US)
Filed on Feb. 28, 2024, as Appl. No. 18/589,993.
Claims priority of provisional application 63/449,030, filed on Feb. 28, 2023.
Int. Cl. H03K 17/10 (2006.01); G06N 10/00 (2022.01); G06N 10/40 (2022.01); H03K 17/92 (2006.01); H04B 10/70 (2013.01)
CPC H03K 17/92 (2013.01) [G06N 10/40 (2022.01)] 26 Claims
OG exemplary drawing
 
1. A system comprising:
a first plurality of optical interconnects that receive an entangled state;
a second plurality of optical interconnects that receive an additional entangled state;
a non-cryogenic structure comprising a plurality of interference circuits to interfere qubits from the entangled state and the additional entangled state;
a cryogenic structure comprising a plurality of detectors;
a third plurality of optical interconnects to couple interfered qubits from the plurality of interference circuits in the non-cryogenic structure to the plurality of detectors in the cryogenic structure;
control circuitry configured to transmit instructions to the plurality of interference circuits that cause the plurality of interference circuits to interfere the qubits according to a measurement scheme, the measurement scheme comprising a joint measurement on a first qubit from the entangled state and a second qubit from the additional entangled state, the plurality of detectors forming readout data from the joint measurement of the first qubit and the second qubit; and
store the readout data in memory.