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Journal of Shanghai University >

2022 , Vol. 28 >Issue 2: 333 - 346

DOI: https://doi.org/10.12066/j.issn.1007-2861.2345

Research Articles

Implementation of charge qubits in ultra-strong coupling regime and quantum-state transfer

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  • College of Sciences, Shanghai University, Shanghai 200444, China

Received date: 2021-07-22

  Online published: 2022-04-28

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Abstract

The Cooper-pair box (CPB) capacitively coupled to an LC resonatorwas considered in a superconducting quantum circuit that permittedthe high adjustability of light-matter interactions. The deep-strongcoupling (DSC) and ultra-strong coupling (USC) regimes could beobtained by increasing the impedance of the LC resonator anddecreasing the Josephson energy of the qubit. In this regard, atwo-qubit circuit, as a coherent mediator with a promising degree ofnoise immunity, was used to transfer quantum states between pairs ofTransmon qubits. This study provided new insights into USC regimesin light-matter interaction systems. Furthermore, it contributed tothe fields of quantum control, quantum simulation, and quantuminformation processing with superconducting quantum circuits.

Key words： charge qubit; quantum-state transfer (QST); ultra-strong coupling (USC)

Cite this article

YU Jing, ZHOU Mo, HUANG Tangyou, HAO Minjia, CHEN Xi . Implementation of charge qubits in ultra-strong coupling regime and quantum-state transfer[J]. Journal of Shanghai University, 2022 , 28(2) : 333 -346 . DOI: 10.12066/j.issn.1007-2861.2345

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