A Decoherence-Free Quantum Memory Using Trapped Ions

Abstract

We demonstrate a decoherence-free quantum memory of one qubit. By encoding the qubit into the decoherence-free subspace (DFS) of a pair of trapped (9)Be(+) ions, we protect the qubit from environment-induced dephasing that limits the storage time of a qubit composed of a single ion. We measured the storage time under ambient conditions and under interaction with an engineered noisy environment and observed that encoding into the DFS increases the storage time by up to an order of magnitude. The encoding reversibly transfers an arbitrary qubit stored in a single ion to the DFS of two ions.

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Document Details

Document Type
Technical Report
Publication Date
Sep 22, 2016
Accession Number
AD1003402

Entities

People

  • C. A. Sackett
  • C. Monroe
  • D. Kielpinski
  • David J. Wineland
  • M. A. Rowe
  • V. Meyer
  • W. M. Itano

Organizations

  • National Institute of Standards and Technology

Tags

DTIC Thesaurus Topics

  • Ambient Noise
  • Coding
  • Computer Architecture
  • Computer Programming
  • Decoding
  • Environment
  • Frequency
  • Information Processing
  • Ion Traps
  • Laser Beams
  • Logic Gates
  • Magnetic Fields
  • Noise
  • Quantum Computing
  • Quantum Information
  • Quantum Information Science
  • Quantum Memories

Fields of Study

  • Physics

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Geochemistry
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Quantum Computing
  • Quantum Science - Quantum Dots