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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
Summary
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.
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.
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