Observation of macroscopic Landau-Zener transitions in a superconducting device

被引：64

作者：

Izmalkov, A

Grajcar, M

Il'Ichev, E

Oukhanski, N

Wagner, T

Meyer, HG

Krech, W

Amin, MHS

Van Den Brink, AM

Zagoskin, AM

机构：

[1] Inst Phys High Technol, D-07702 Jena, Germany

[2] Moscow MV Lomonosov State Univ, Moscow Phys Engn Inst, Moscow 115409, Russia

[3] Comenius Univ, Dept Solid State Phys, SK-84248 Bratislava, Slovakia

[4] Univ Jena, Inst Solid State Phys, D-07743 Jena, Germany

[5] D Wave Syst Inc, Vancouver, BC V6J 4Y3, Canada

[6] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

来源：

EUROPHYSICS LETTERS | 2004年 / 65卷 / 06期

关键词：

D O I：

10.1209/epl/i2003-10200-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A two-level system traversing a level anticrossing has a small probability to make a so-called Landau-Zener (LZ) transition between its energy bands, in deviation from simple adiabatic evolution. This effect takes on renewed relevance due to the observation of quantum coherence in superconducting qubits (macroscopic "Schrodinger cat" devices). We report an observation of LZ transitions in an Al three-junction qubit coupled to a Nb resonant tank circuit.

引用

页码：844 / 849

页数：6

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