Quantum Metrology with Dicke Squeezed States

Abstract

We introduce a new class of quantum many-particle entangled states, called the Dicke squeezed (or DS) states, which can be used to improve the precision in quantum metrology beyond the standard quantum limit. We show that the enhancement in measurement precision is characterized by a single experimentally detectable parameter, called the Dicke squeezing XiD, which also bounds the entanglement depth for this class of states. The measurement precision approaches the ultimate Heisenberg limit as XiD attains the minimum in an ideal Dicke state. Compared with other entangled states, we show that the DS states are more robust to decoherence and give better measurement precision under typical experimental noise.

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Document Details

Document Type
Technical Report
Publication Date
Oct 24, 2014
Accession Number
AD1054484

Entities

People

  • Luming Duan
  • Zhicai Zhang

Organizations

  • University of Michigan

Tags

DTIC Thesaurus Topics

  • Bayesian Inference
  • Detection
  • Figure Of Merit
  • Hilbert Space
  • Interferometers
  • Measurement
  • Metrology
  • Particles
  • Phase
  • Phase Measurement
  • Phase Shift
  • Precision
  • Probability
  • Probability Distributions
  • Quantum Bits
  • Quantum Information
  • Quantum Properties

Fields of Study

  • Physics

Readers

  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Systems Analysis and Design

Technology Areas

  • Quantum Computing