Magnetic phase shifter for superconducting qubits

被引：11

作者：

Golubovic, DS ^{[1
]}

Pogosov, WV ^{[1
]}

Morelle, M ^{[1
]}

Moshchalkov, VV ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Nanoscale Superconduct & Magnetism Grp, Lab Solid State Phys & Magnetism, B-3001 Leuven, Belgium

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.92.177904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have designed and investigated a contactless magnetic phase shifter for flux-based superconducting qubits. The phase shifter is realized by placing a perpendicularly magnetized dot at the center of a superconducting loop. The flux generated by this magnetic dot gives rise to an additional shielding current in the loop and induces a phase shift. By modifying the parameters of the dot an arbitrary phase shift can be generated in the loop. This magnetic phase shifter can, therefore, be used as an external current source in superconducting circuits, as well as a suitable tool to study fractional Josephson vortices.

引用

页码：177904 / 1

页数：4