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Atomic quantum state teleportation and swapping.

A Kuzmich1, E S Polzik

  • 1Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.

Physical Review Letters
|January 3, 2001
PubMed
Summary
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New protocols enable quantum state teleportation and swapping between atoms and photons using Einstein-Podolsky-Rosen light. These methods are feasible for continuous quantum variables and macroscopic atomic samples.

Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Quantum Optics

Background:

  • Quantum state teleportation and swapping are fundamental quantum information tasks.
  • Utilizing continuous quantum variables offers advantages for macroscopic systems.
  • Einstein-Podolsky-Rosen (EPR) light provides a resource for quantum correlations.

Purpose of the Study:

  • To propose novel protocols for quantum state teleportation and swapping.
  • To extend these protocols to both atom-photon and atom-atom entanglement.
  • To investigate the feasibility of these protocols for macroscopic atomic ensembles.

Main Methods:

  • Development of theoretical protocols leveraging EPR light.
  • Application to polarization quantum states of multiphoton light pulses.

Related Experiment Videos

  • Consideration of macroscopic atomic samples with continuous quantum variables.

    • Main Results:

    • Proposed protocols for atom-photon and atom-atom quantum state teleportation and swapping.
    • Demonstrated applicability to continuous quantum variables and macroscopic atomic samples.
    • Showcased the sufficiency of simple free-space interaction between polarized light and atomic ensembles.

    Conclusions:

    • The proposed protocols offer a viable route for quantum information processing with macroscopic atomic systems.
    • Experimental realization using gas samples of atoms is feasible.
    • These advancements contribute to the development of robust quantum technologies.