Phase Sensitivity of a Mach-Zehnder Quantum Sensor

Abstract

We investigate the dependence of the fidelity of a Mach-Zehnder quantum interferometer on the prior information about the phase, for Fock state input and for maximally entangled (N00N) state input. For no prior information, the fidelity for Fock state input is greater than for N00N state input. In the limit of a narrow dis- tribution describing the prior information, we find that both Fock and N00N state inputs lead to nearly equal fidelity.

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Document Details

Document Type
Technical Report
Publication Date
Jan 31, 2007
Accession Number
ADA523793

Entities

People

  • Paul A. Lopata
  • Thomas B. Bahder

Tags

Communities of Interest

  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Detectors
  • Information Operations
  • Interferometers
  • Measurement
  • Phase
  • Phase Measurement
  • Phase Shift
  • Probability
  • Probability Distributions
  • Random Variables
  • Reliability
  • Research Facilities
  • Sensitivity
  • Shot Noise
  • Standards

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Calculus or Mathematical Analysis
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Quantum Computing
  • Quantum Science - Quantum Dots