Using sideband transitions for two-qubit operations in superconducting circuits

被引:170
|
作者
Leek, P. J. [1 ]
Filipp, S. [1 ]
Maurer, P. [1 ]
Baur, M. [1 ]
Bianchetti, R. [1 ]
Fink, J. M. [1 ]
Goppl, M. [1 ]
Steffen, L. [1 ]
Wallraff, A. [1 ]
机构
[1] ETH, Dept Phys, CH-8093 Zurich, Switzerland
基金
瑞士国家科学基金会;
关键词
Bell theorem; quantum electrodynamics; quantum entanglement; quantum optics; resonators; superconducting junction devices; transmission lines; two-photon processes; QUANTUM; QUBITS;
D O I
10.1103/PhysRevB.79.180511
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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.
引用
收藏
页数:4
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