Observation of zero-point fluctuations in a resistively shunted Josephson tunnel junction

Journal Article · Mon Oct 26 04:00:00 EST 1981 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.47.1216· OSTI ID:5890292

Koch, R H; Van Harlingen, D J; Clarke, J

The spectral density of the voltage noise has been measured in current-biased resistively shunted Josephson junctions in which quantum corrections to the noise are expected to be important. The experimental data are in excellent agreement with theoretical predictions, demonstrating clearly the contribution of zero-point fluctuations that are generated in the shunt resistor at frequencies near the Josephson frequency and mixed down to the measurement frequency.

• Research Organization: Department of Physics, University of California, Berkeley, California
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5890292
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 47:17; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
CORRELATIONS
DATA
ELECTRIC POTENTIAL
ELEMENTS
EXPERIMENTAL DATA
FLUCTUATIONS
INDIUM COMPOUNDS
INDIUM OXIDES
INFORMATION
JOSEPHSON JUNCTIONS
JUNCTIONS
LEAD
METALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTING JUNCTIONS
THEORETICAL DATA
TUNNEL EFFECT
ULTRALOW TEMPERATURE
VARIATIONS