Event Type: IFIMAColloquium
Title: Emulating the Bose-Hubbard Model with Arrays of Superconducting Qubits
When: Friday, 24th January, 2025, at 15:00h
Where: Conference Room, Module 00, Facultad de Ciencias, Universidad Autónoma de Madrid
Speaker: William D. Oliver, Massachusetts Institute of Technology, USA.
In this talk, we study the propagation, entanglement, and entropy of quantum information using 3×3 and 4×4 arrays of superconducting qubits that emulate the two-dimensional (2D) hard-core Bose-Hubbard model. The 2D arrays feature site-selective, simultaneous control and readout of all qubits. We highlight several recent experimental demonstrations using these arrays, including quantum random walks, Anderson and Wannier-Stark localization [1], the differentiation between area-law and volume-law entanglement scaling in these lattices [2], Aharonov-Bohm caging [3], and the emulation of flat-bands in 1D chains [4]. Time permitting, I will talk about recent improvements in control fidelity with fluxonium qubits at the 99.998% level for single-qubit gates [5].
- npj Quantum Information 8, 35 (2022) | arXiv:2107.05035 (2021)
- Nature 629, 561-566 (2024) | arXiv:2306.02571 (2023)
- Nature Physics 20, 1881-1887 (2024) | arXiv:2405.00873 (2024)
- arXiv:2410.07878 (2024)
- PRX Quantum 5, 040342 (2024) | arXiv:2406.08295 (2024)
