US 12,360,869 B2
Adaptive basis selection for encoded fusion measurements
Mihir Pant, Mountain View, CA (US); Naomi Nickerson, Palo Alto, CA (US); and Hector Bombin Palomo, Kyoto (JP)
Assigned to PsiQuantum, Corp., Palo Alto, CA (US)
Filed by PsiQuantum, Corp., Palo Alto, CA (US)
Filed on Apr. 18, 2022, as Appl. No. 17/722,847.
Application 17/722,847 is a continuation of application No. 17/216,450, filed on Mar. 29, 2021, granted, now 11,308,416.
Claims priority of provisional application 63/119,395, filed on Nov. 30, 2020.
Claims priority of provisional application 63/118,319, filed on Nov. 25, 2020.
Claims priority of provisional application 63/081,691, filed on Sep. 22, 2020.
Claims priority of provisional application 63/009,920, filed on Apr. 14, 2020.
Claims priority of provisional application 63/001,745, filed on Mar. 30, 2020.
Prior Publication US 2022/0237494 A1, Jul. 28, 2022
Int. Cl. G06F 11/25 (2006.01); G06F 11/10 (2006.01); G06N 3/08 (2023.01); G06N 10/40 (2022.01); G06N 10/70 (2022.01); G06F 3/06 (2006.01); H10N 99/00 (2023.01)
CPC G06F 11/25 (2013.01) [G06F 11/1004 (2013.01); G06N 3/08 (2013.01); G06N 10/40 (2022.01); G06N 10/70 (2022.01); G06F 3/0604 (2013.01); G06F 3/0659 (2013.01); G06F 3/0679 (2013.01); H10N 99/05 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A photonic quantum computing system, comprising:
a non-transitory computer-readable memory medium;
a first encoded qubit comprising a first plurality of photonic quantum modes;
a second encoded qubit comprising a second plurality of photonic quantum modes;
a fusion controller; and
a plurality of fusion sites coupled to the fusion controller, wherein the photonic quantum computing system is configured to:
perform a first fusion measurement at a first fusion site of the plurality of fusion sites on a first photonic quantum mode of the first plurality of photonic quantum modes and a second photonic quantum mode of the second plurality of photonic quantum modes;
obtain a first classical measurement result of the first fusion measurement;
select a basis for performing a second fusion measurement based at least in part on the first classical measurement result;
perform the second fusion measurement at a second fusion site of the plurality of fusion sites on a third photonic quantum mode of the first plurality of photonic quantum modes and a fourth photonic quantum mode of the second plurality of photonic quantum modes according to the selected basis;
obtain a second classical measurement result of the second fusion measurement;
determine an encoded fusion measurement result of a fusion of the first encoded qubit and the second encoded qubit based at least in part on the first and second classical measurement results; and
store the encoded fusion measurement result in a non-transitory memory medium.