Optical-Transition Atomic Clock Beyond the Standard Quantum Limit

Abstract

State-of-the-art atomic clocks are based on the precise detection of the energy difference between two atomic levels. The stability of the best atomic clocks is close to the so-called standard quantum limit (SQL). The generation of entanglement on an optical-clock transition and operation of an optical-lattice clock (OLC) beyond the SQL represent major goals in quantum metrology. We demonstrate for the first time the creation of a many-atom entangled state in an OLC with a metrological gain of 4.4 dB over the SQL using an ensemble consisting of a few hundred 171Yb atoms. This will enable further advances in timekeeping precision and accuracy, with many scientific and technological applications.

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Document Details

Document Type
Technical Report
Publication Date
Feb 12, 2021
Accession Number
AD1122939

Entities

People

  • Vladan Vuletić

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Atomic Clocks
  • Atoms
  • Clocks
  • Crystal Lattices
  • Distributed Bragg Reflectors
  • Energy Levels
  • Ground State
  • Lasers
  • Local Oscillators
  • Measurement
  • Optical Lattices
  • Phase
  • Phase Measurement
  • Quantum Bits
  • Quantum Properties
  • Quantum States
  • Sequences
  • Spin States
  • Standards

Fields of Study

  • Physics

Readers

  • Housing Policy Studies in Military Families with Privatization and Telomerase Allowance Units, Multi-Family Housing, and Telomere Lengths.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Systems Analysis and Design

Technology Areas

  • Quantum Computing