Generalized switchable coupling for superconducting qubits using double resonance

被引：35

作者：

Ashhab, S. ^{[1
]}

Matsuo, Shigemasa

Hatakenaka, Noriyuki

Nori, Franco

机构：

[1] RIKEN, Inst Phys & Chem Res, Frontier Res Syst, Wako, Saitama 3510198, Japan

[2] Hiroshima Univ, Grad Sch Integrated Arts & Sci, Higashihiroshima 7398521, Japan

[3] Hiroshima Univ, MILq Project, Int Project Ctr Integrated Res Quantum Informat &, Higashihiroshima 7398521, Japan

[4] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[5] Univ Michigan, Ctr Theoret Phys, Ann Arbor, MI 48109 USA

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 18期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.74.184504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We propose a method for switchable coupling between superconducting qubits using double resonance. The interqubit coupling is achieved by applying near-resonant oscillating fields to the two qubits. The deviation from resonance relaxes the criterion of strong driving fields while still allowing for a fully entangling two-qubit gate. This method avoids some of the shortcomings of previous proposals for switchable coupling. We discuss the possible application of our proposal to a pair of inductively coupled flux qubits, and we consider the extension to phase qubits.

引用

页数：6

共 30 条

[1] Variable electrostatic transformer: Controllable coupling of two charge qubits [J].

Averin, DV ;

Bruder, C .

PHYSICAL REVIEW LETTERS, 2003, 91 (05) :570031-570034

[2] Entangled macroscopic quantum states in two superconducting qubits [J].

Berkley, AJ ;

Xu, H ;

Ramos, RC ;

Gubrud, MA ;

Strauch, FW ;

Johnson, PR ;

Anderson, JR ;

Dragt, AJ ;

Lobb, CJ ;

Wellstood, FC .

SCIENCE, 2003, 300 (5625) :1548-1550

[3] Parametric coupling for superconducting qubits [J].

Bertet, P ;

Harmans, CJPM ;

Mooij, JE .

PHYSICAL REVIEW B, 2006, 73 (06)

[4] Tunable coupling of superconducting qubits [J].

Blais, A ;

van den Brink, AM ;

Zagoskin, AM .

PHYSICAL REVIEW LETTERS, 2003, 90 (12) :4

[5] Coherent quantum dynamics of a superconducting flux qubit [J].

Chiorescu, I ;

Nakamura, Y ;

Harmans, CJPM ;

Mooij, JE .

SCIENCE, 2003, 299 (5614) :1869-1871

[6]

Cohen-Tannoudji C., 1992, ATOM PHOTON INTERACT

[7]

HARRABI K, UNPUB

[8] NUCLEAR DOUBLE RESONANCE IN ROTATING FRAME [J].

HARTMANN, SR ;

HAHN, EL .

PHYSICAL REVIEW, 1962, 128 (05) :2042-&

[9] Evidence for entangled states of two coupled flux qubits [J].

Izmalkov, A ;

Grajcar, M ;

Il'ichev, E ;

Wagner, T ;

Meyer, HG ;

Smirnov, AY ;

Amin, MHS ;

van den Brink, AM ;

Zagoskin, AM .

PHYSICAL REVIEW LETTERS, 2004, 93 (03) :037003-1

[10] Spectroscopy of capacitively coupled Josephson-junction qubits [J].