Doubly nonlinear superconducting qubit

被引：23

作者：

Dat Thanh Le ^{[1
,2
]}

Grimsmo, Arne ^{[3
]}

Mueller, Clemens ^{[1
,4
]}

Stace, T. M. ^{[1
]}

机构：

[1] Univ Queensland, ARC Ctr Engn Quantum Syst, Dept Phys, Brisbane, Qld 4072, Australia

[2] Thang Long Univ, Thang Long Inst Math & Appl Sci TIMAS, Hanoi 10000, Vietnam

[3] Univ Sydney, ARC Ctr Engn Quantum Syst, Sch Phys, Sydney, NSW 2006, Australia

[4] IBM Res Zurich, CH-8803 Ruschlikon, Switzerland

来源：

PHYSICAL REVIEW A | 2019年 / 100卷 / 06期

基金：

澳大利亚研究理事会; 瑞士国家科学基金会;

关键词：

QUANTUM; OUTPUT; INPUT;

D O I：

10.1103/PhysRevA.100.062321

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe a superconducting circuit consisting of a Josephson junction in parallel with a quantum phase slip wire, which implements a Hamiltonian that is periodic in both charge and flux. This Hamiltonian is exactly diagonalizable in a double-Bloch band, and the eigenstates are shown to be code states of the Gottesman-KitaevPreskill quantum error correcting code. The eigenspectrum has several critical points, where the linear sensitivity to external charge and flux noise vanishes. The states at these critical points thus hold promise as qubit states that are insensitive to common external noise sources.

引用

页数：15

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