Related Experiment Video
Updated: Jul 2, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
Reversible quantum optical data storage based on resonant Raman optical field excited spin coherence
1Center for Photon Information Processing, and the Graduate School of Information and Telecommunications, Inha University, Nam-gu, Incheon, S Korea. bham@inha.ac.kr
This study introduces a novel quantum optical data storage method using spin coherence. The technique enables multimode access, benefiting quantum information processors and quantum repeaters.
Area of Science:
- Quantum Information Science
- Optical Physics
- Data Storage Technologies
Background:
- Quantum optical data storage is crucial for advanced computing.
- Existing methods like photon echo have limitations.
- Spin coherence offers a promising avenue for quantum memory.
Purpose of the Study:
- To present a new method for reversible quantum optical data storage.
- To utilize resonant Raman field excited spin coherence.
- To explore the benefits of multimode optical channels for quantum information processing.
Main Methods:
- Storing spin coherence in an inhomogeneously broadened spin ensemble.
- Employing a 2pi Raman optical rephasing pulse area.
- Utilizing resonant Raman field excitation.
Main Results:
- Demonstrated a novel method for reversible quantum optical data storage.
- Achieved storage of spin coherence in a spin ensemble.
- Enabled multimode (parallel) optical channels for data access.
Conclusions:
- The presented technique offers a new approach to quantum optical data storage.
- The use of multimode access provides significant advantages for quantum information processors.
- This method shows potential for applications in quantum repeaters.
Related Concept Videos
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
NMR Spectroscopy: Spin–Spin Coupling
Atomic Nuclei: Magnetic Resonance
Raman Spectroscopy Instrumentation: Overview
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
Atomic Nuclei: Nuclear Spin State Overview
Raman Spectroscopy: Overview
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...

