Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session D47: Superconducting Qubits: Tunable Couplers & Gates II
3:00 PM–6:00 PM,
Monday, March 4, 2024
Room: 200CD
Sponsoring
Unit:
DQI
Chair: Yao Lu, Fermi National Accelerator Laboratory (Fermilab)
Abstract: D47.00007 : Inductive coupling scheme for quantum simulation with superconducting qubits*
4:12 PM–4:24 PM
Presenter:
Matthew Molinelli
(Princeton University)
Authors:
Matthew Molinelli
(Princeton University)
Jeronimo G Martinez
(Princeton University)
Basil M Smitham
(Princeton University)
Andrew A Houck
(Princeton University)
Superconducting qubits provides a promising platform for quantum simulation of Bose-Hubbard Hamiltonians due to the flexibility of tuning system parameters. Changing the ratio of on-site interaction strength due to qubit anharmonicity and coupling strength between qubits allows exploration of different quantum phases in the Bose-Hubbard model. Probing these quantum phase transitions requires the ability to dynamically tune the coupling strength. An inductive coupling scheme can make use of the nonlinearity of a Josephson junction to dynamically change the mutual inductance between two qubits by applying a DC magnetic flux [1]. The relative mutual inductances between the qubits and couplers can be engineered to achieve a large range of coupling strengths. Having both a high coupling strength and the ability to tune between positive and negative couplings enables quantum simulation experiments in various parameter regimes. We present our experimental realization and characterization of a tunable inductive coupler between transmon qubits.
[1] Geller et al., PRA 92, 012320 (2015)
*This research was supported by the ARO MURI and RQS (NSF Institute for Robust Quantum Simulation)
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