Dispersive coupling between the superconducting transmission line resonator and the double quantum dots

2008/02/29 by Guo‐Ping Guo, Guo-Ping Guo, Hui Zhang +4
Computer Science · Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum Information and Cryptography #Quantum and electron transport phenomena #quant-ph

paper · pdf · doi:10.1103/physreva.78.020302

published as Phys. Rev. A 020302(R) (2008) · 10 pages, 5 figures

arxiv created 2008/05/30 · openalex publication_date 2008/08/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Realization of controllable interaction between distant qubits is one of the major problems in scalable solid-state quantum computing. We study a superconducting transmission line resonator (TLR) as a tunable dispersive coupler for the double-dot molecules. A general interaction Hamiltonian of n two-electron spin-based qubits and the TLR is presented, where the double-dot qubits are biased at the large detuning region and the TLR is always empty and virtually excited. Our analysis of the main decoherence sources indicates that various major quantum operations can be reliably implemented with current technology.

Citations

• ac Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
• Cavity quantum electrodynamics for superconducting electrical circuits: An architecture for quantum computation
• Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
• Coherent Manipulation of Coupled Electron Spins in Semiconductor Quantum Dots
• Single-shot read-out of an individual electron spin in a quantum dot