US 12,288,135 B2
Quantum information processing with an asymmetric error channel
Shruti Puri, New Haven, CT (US); Alexander Grimm, New Haven, CT (US); Philippe Campagne-Lbarcq, New Haven, CT (US); Steven M. Girvin, Hamden, CT (US); and Michel Devoret, New Haven, CT (US)
Assigned to Yale University, New Haven, CT (US)
Appl. No. 17/253,460
Filed by Yale University, New Haven, CT (US)
PCT Filed Jun. 28, 2019, PCT No. PCT/US2019/039945
§ 371(c)(1), (2) Date Dec. 17, 2020,
PCT Pub. No. WO2020/068237, PCT Pub. Date Apr. 2, 2020.
Claims priority of provisional application 62/692,243, filed on Jun. 29, 2018.
Prior Publication US 2021/0125096 A1, Apr. 29, 2021
Prior Publication US 2021/0390444 A9, Dec. 16, 2021
Int. Cl. G06N 10/70 (2022.01); G06N 10/40 (2022.01); H04L 1/04 (2006.01)
CPC G06N 10/70 (2022.01) [G06N 10/40 (2022.01); H04L 1/04 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A quantum information processing (QIP) system comprising:
a data qubit;
an ancilla qubit with an asymmetric error channel, the data qubit coupled to the ancilla qubit; and
a measurement device configured to measure a property of the data qubit using the ancilla qubit using a quantum non-demolition measurement, the measurement device comprising:
a readout cavity coupled to the ancilla qubit; and
a cavity state detector configured to measure a state of the readout cavity, wherein the cavity state detector comprises a phase-sensitive detector.