Large Gain, Negative Resistance, and Oscillations in Superconducting Quasiparticle Heterodyne Mixers,

Abstract

We have measured the properties of a superconductor-insulator-superconductor (SIS) quasiparticle mixer which is operated in the quantum limit. Single sideband conversion gain larger than +4 dB was observed at 36 GHz with a mixer noise temperature T=9 + or - 6K, which is to be compared with the (Planck) quantum limit h-bar omega/(kln2) approx. 2.5K. Complete 3-port mixer calculations are presented which are in good agreement with the gain measurements. Negative resistance was observed which implies that arbitrarily large gain is available.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1981
Accession Number
ADA104534

Entities

People

  • A. D. Smith
  • H. Van Kempen
  • P. L. Richards
  • R. A. Batchelor
  • W. R. Mcgrath

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Agreements
  • Amplifiers
  • Amplitude Modulation
  • Blackbody Radiation
  • Calibration
  • Conversion
  • Detection
  • Detectors
  • Frequency
  • Impedance
  • Magnetic Fields
  • Measurement
  • Oscillation
  • Quasiparticles
  • Radio Frequency
  • Transmission Lines
  • Universities

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Superconducting Magnet Technology

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Quantum Computing