EP 4205044 A1 20230705 - METHOD FOR OPERATING A CIRCUIT HAVING A FIRST AND A SECOND QUBIT
Title (en)
METHOD FOR OPERATING A CIRCUIT HAVING A FIRST AND A SECOND QUBIT
Title (de)
VERFAHREN FÜR DEN BETRIEB EINES SCHALTKREISES MIT EINEM ERSTEN UND EINEM ZWEITEN QUBIT
Title (fr)
PROCÉDÉ DE FONCTIONNEMENT D'UN CIRCUIT AYANT UN PREMIER ET UN SECOND BIT QUANTIQUE
Publication
Application
Priority
- DE 102020005218 A 20200826
- DE 102020122245 A 20200826
- EP 2021073339 W 20210824
Abstract (en)
[origin: WO2022043297A1] The invention relates to a method for operating a circuit having a first qubit (7) and a second qubit (3), which circuit is designed so that the frequency of the first qubit (7) differs from the frequency of the second qubit (3), and having a coupler (4) which couples the first qubit (7) and the second qubit (3), a cross-resonance pulse being transmitted to the first qubit (7), and the amplitude of the cross-resonance pulse being selected so that the two-qubit phase error is minimal or at least substantially minimal in terms of amount. The two-qubit phase error is determined by measuring the qubit Hamiltonian value and measuring the coupling strength of the ZZ interaction in kilohertz precision. A high two-qubit gate fidelity can be achieved by the invention.
IPC 8 full level
G06N 10/00 (2022.01)
CPC (source: EP US)
G06N 10/00 (2018.12 - EP); G06N 10/40 (2022.01 - US); H03K 17/92 (2013.01 - US)
Citation (search report)
See references of WO 2022043297A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022043297 A1 20220303; CN 115867924 A 20230328; EP 4205044 A1 20230705; JP 2023540060 A 20230921; US 2023318600 A1 20231005
DOCDB simple family (application)
EP 2021073339 W 20210824; CN 202180038432 A 20210824; EP 21763382 A 20210824; JP 2023513769 A 20210824; US 202118041148 A 20210824