Published May 2011 | Version v1
Journal article Metadata-only

Macroscopic resonant tunneling in an rf-SQUID flux qubit

Creators

  • 1. Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093 (China)
  • 2. National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093 (China)

Description

We have observed the macroscopic resonant tunneling of magnetic flux between macroscopically distinct quantum states in a superconducting flux qubit. The dependences of the macroscopic resonant tunneling on the barrier height of the potential well, the flux bias and the initial state are investigated. Detailed measurements of the tunneling rate as a function of the flux bias reveal the feature of the quantum noise in the superconducting flux qubit. (general)

Availability note (English)

Available from http://dx.doi.org/10.1088/1674-1056/20/5/050316

Additional details

Identifiers

DOI
10.1088/1674-1056/20/5/050316;

Publishing Information

Journal Title
Chinese Physics. B
Journal Volume
20
Journal Issue
5
Journal Page Range
[4 p.]
ISSN
1674-1056

INIS

Country of Publication
China
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45012869
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
MAGNETIC FLUX; POTENTIALS; QUANTUM STATES; SQUID DEVICES; SUPERCONDUCTIVITY; TUNNEL EFFECT
Descriptors DEC
ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELECTRONIC EQUIPMENT; EQUIPMENT; FLUXMETERS; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; PHYSICAL PROPERTIES; SUPERCONDUCTING DEVICES