Quantum Noise Studies with Superconducting Tunnel Junction Mixers

Abstract

We have completed our theoretical and experimental investigations of the noise properties of superconducting tunnel junction (SIS) mixers operated as both a phase insensitive linear amplifier and as a phase sensitive linear amplifier. We proposed a technique by which a SIS mixer could be operated as a phase sensitive linear amplifier, i.e., the gain and noise temperature of the amplifier are a function of the phase of the incoming signal. In this technique two phase coherent local oscillators at different frequencies are combined in the mixer simultaneously so both a phase preserving and phase conjugating mixing process occur resulting in a phase sensitive mixer.

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Document Details

Document Type
Technical Report
Publication Date
Mar 14, 1993
Accession Number
ADA270897

Entities

People

  • Mark F. Bocko

Organizations

  • University of Rochester

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Amplifiers
  • Classification
  • Detectors
  • Electrical Engineering
  • Engineering
  • Frequency
  • Local Oscillators
  • Noise
  • Noise Reduction
  • Oscillators
  • Quantum Noise
  • Security
  • Shot Noise
  • Sidebands
  • Universities

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Nuclear Civil Defense.

Technology Areas

  • Quantum Computing