Using sideband transitions for two-qubit operations in superconducting circuits

被引：175

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

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 18期

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

页数：4

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