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Related Experiment Video

Updated: May 16, 2026

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Optimal storage and retrieval of single-photon waveforms.

Shuyu Zhou1, Shanchao Zhang, Chang Liu

  • 1Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.

Optics Express
|November 29, 2012
PubMed
Summary

Researchers demonstrated efficient storage and retrieval of single-photon wave packets using electromagnetically induced transparency (EIT) in cold atoms. This quantum light-matter interface achieved 49% efficiency, advancing quantum information applications.

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Area of Science:

  • Quantum optics
  • Atomic physics
  • Quantum information science

Background:

  • Quantum light-matter interfaces are crucial for quantum information processing.
  • Electromagnetically induced transparency (EIT) enables strong light-matter interactions in atomic systems.
  • Heralded single-photon sources are essential for quantum communication and computation.

Purpose of the Study:

  • To experimentally demonstrate optimal storage and retrieval of single-photon wave packets.
  • To investigate the performance of EIT in cold atoms for quantum memory applications.
  • To assess the efficiency and fidelity of quantum information storage.

Main Methods:

  • Utilizing electromagnetically induced transparency (EIT) in a cold atomic ensemble.
  • Employing a high optical depth atomic system for enhanced light-matter interaction.

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Last Updated: May 16, 2026

Quasi-light Storage for Optical Data Packets
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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  • Generating and storing heralded single-photon wave packets.
  • Measuring storage efficiency and temporal waveform fidelity.

    • Main Results:

    • Achieved an optimal storage efficiency of (49 ± 3)%.
    • Preserved the temporal waveform of the single-photon packets with 96% likeness.
    • Demonstrated successful retrieval of the stored quantum information.

    Conclusions:

    • The experimental results show the feasibility of high-efficiency quantum memory using EIT in cold atoms.
    • This work advances the development of practical quantum light-matter interfaces.
    • The demonstrated performance brings quantum information applications closer to realization.