RT Journal Article
T1 Quantum control of tunable-coupling transmons using dynamical invariants of motion
A1 Espinós, H.
A1 Panadero, I.
A1 García-Ripoll, J.J.
A1 Torrontegui Muñoz, Erik
AB We analyze the implementation of a fast nonadiabatic CZ gate between two transmon qubits with tunable coupling. The gate control method is based on a theory of dynamical invariants which leads to reduced leakage and robustness against decoherence. The gate is based on a description of the resonance between the 11 and 20 using an effective Hamiltonian with the six lowest energy states. A modification of the protocol allows us to take into account the higher-order perturbative corrections of this effective model. This enables a gate fidelity several orders of magnitude higher than other quasiadiabatic protocols, with gate times that approach the theoretical limit.
PB IOP Science
SN 2058-9565
YR 2023
FD 2023-04
LK https://hdl.handle.net/10016/37058
UL https://hdl.handle.net/10016/37058
LA eng
NO We acknowledge financial support from the Spanish Government through PGC2018-094792-B-I00 (MCIU/AEI/FEDER,UE), CSIC Research Platform PTI-001, and by Comunidad de Madrid-EPUC3M14 and CAM/FEDER Project No. S2018/TCS-4342 (QUITEMAD-CM). H E acknowledges the Spanish Ministry of Science, Innovation and Universities for funding through the FPU Program (FPU20/03409). E T acknowledges the Ramón y Cajal Program (RYC2020-030060-I).
DS e-Archivo
RD 27 jul. 2024