Berlin 2024 – scientific programme
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QI: Fachverband Quanteninformation
QI 22: Quantum Simulation I
QI 22.11: Talk
Thursday, March 21, 2024, 12:30–12:45, HFT-FT 101
Soliton versus single-photon quantum dynamics in arrays of superconducting qubits — •Ben Blain1, Giampiero Marchegiani1, Juan Polo1, Gianluigi Catelani2,1, and Luigi Amico1,3,4,5 — 1Quantum Research Center, Technology Innovation Institute, Abu Dhabi 9639, United Arab Emirates — 2JARA Institute for Quantum Information (PGI-11), Forschungszentrum Jülich, 52425 Jülich, Germany — 3Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543 — 4INFN-Sezione di Catania, Via S. Sofia 64, 95127 Catania, Italy — 5MajuLab, CNRS-UNS-NUS-NTU International Joint Research Unit, UMI 3654, Singapore
Superconducting junctions constitute a promising platform for both future implementation of quantum processors and for quantum simulation. Arrays of Transmon qubits naturally implement the Bose-Hubbard model, with negative (attractive) on-site interaction[1]. In this work[2], we demonstrate that the transport near the ground state of such systems occurs as transmissions of a bright quantum soliton[3]. We analyse how the transport involves specific collective bosonic excitations.
[1] O. Mansikkamäki, S. Laine, A. Piltonen, and M. Silveri, PRX Quantum 3, 040314 (2022).
[2] B. Blain, G. Marchegiani, G. Catelani, J. Polo, and L. Amico, Phys. Rev. Research 5, 033130 (2023).
[3] A. Scott, J.C. Eilbeck, H. Gilhoj, Phys. D: Nonlinear Phenom. 78, 194 (1994).
Keywords: Transmon; Soliton; Exact diagonalization; Qubit; Superconducting circuits