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Many-body decoherence dynamics and optimized operation of a single-photon switch.

C R Murray1, A V Gorshkov2, T Pohl1

  • 1Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, D-01187 Dresden, Germany.

New Journal of Physics
|May 17, 2019
PubMed
Summary
This summary is machine-generated.

We present a theoretical framework for multi-photon scattering decoherence in Rydberg atom all-optical switches. Optimized protocols improve photon storage and retrieval, offering insights into quantum optics and Rydberg media applications.

Keywords:
Rydberg gasesdissipative many body physicsoptimal controlquantum informationquantum nonlinear optics

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Area of Science:

  • Quantum Optics
  • Atomic Physics
  • Quantum Information Science

Background:

  • All-optical switches are crucial for quantum information processing.
  • Rydberg atom nonlinearities offer unique light-matter interaction possibilities.
  • Decoherence due to multi-photon scattering limits the performance of quantum devices.

Purpose of the Study:

  • To develop a theoretical framework for decoherence dynamics in Rydberg atom all-optical switches.
  • To optimize photon storage and retrieval strategies considering decoherence.
  • To provide a simplified model explaining experimental results and offering new interpretations.

Main Methods:

  • Theoretical modeling of decoherence processes.
  • Incorporation of decoherence into optimal control protocols.
  • Analysis of many-body decoherence involving multiple photons and excitations.

Main Results:

  • Characterization of decoherence dynamics due to multi-photon scattering.
  • Optimized switching protocols for realistic experimental conditions.
  • A simplified description that matches recent experimental findings and offers a new interpretation of many-body decoherence.

Conclusions:

  • The study provides insights into the operational capacity of realistic photon switching.
  • Offers a complete description of spin wave decoherence in Rydberg quantum optics.
  • Has immediate relevance for applications involving photon storage in Rydberg media.