Using sideband transitions for two-qubit operations in superconducting circuits

2008/12/15 by P. J. Leek, Peter Leek, S. Filipp +11 · 230 citations
Computer Science · Engineering · Physics and Astronomy · #Compatible sideband transmission #Electrical engineering #Engineering #Flux qubit #Optoelectronics #Phase qubit #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum computer #Quantum entanglement #Quantum mechanics #Qubit #Resonator #Sideband #Topology (electrical circuits) #cond-mat.mes-hall #cond-mat.supr-con #quant-ph

paper · pdf · doi:10.1103/physrevb.79.180511

published in Physical Review B 79(18) (American Physical Society) · 4 pages, 5 figures, version with high resolution figures available at http://qudev.ethz.ch/content/science/PubsPapers.html

arxiv created 2008/12/15 · openalex publication_date 2009/05/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We demonstrate the time-resolved driving of two-photon blue sideband transitions between superconducting qubits and a transmission line resonator. As an example of using these sideband transitions for a two-qubit operation, we implement a pulse sequence that first entangles one qubit with the resonator and subsequently distributes the entanglement between two qubits. We show the generation of 75% fidelity Bell states by this method. The full density matrix of the two-qubit system is extracted using joint measurement and quantum state tomography and shows close agreement with numerical simulation.

Citations

• Charge insensitive qubit design derived from the Cooper pair box
• Demonstration of conditional gate operation using superconducting charge qubits
• Quantum Coherence with a Single Cooper Pair
• 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
• Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics
• Sideband Transitions and Two-Tone Spectroscopy of a Superconducting Qubit Strongly Coupled to an On-Chip Cavity
• Coupling superconducting qubits via a cavity bus

Cited by

• Generalized cross-resonance scheme for maximally-entangling two-qutrit gates
• Coherent coupling between a ferromagnetic magnon and a superconducting qubit
• Three-electron spin qubits