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Updated: Jul 21, 2026
07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
Storage of light in atomic vapor
D F Phillips1, A Fleischhauer, A Mair
1Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA.
Physical Review Letters
|February 15, 2001
Summary
Researchers successfully trapped a light pulse in Rubidium (Rb) atoms, stopping its movement and releasing it later. This "storage of light" demonstrates precise control over light propagation using atomic coherence.
Area of Science:
- Atomic physics
- Quantum optics
- Light-matter interactions
Background:
- Controlling light propagation is crucial for quantum information processing and optical communication.
- Previous methods for slowing light have limitations in storage time and controllability.
Purpose of the Study:
- To demonstrate the storage and on-demand release of a light pulse using atomic vapor.
- To investigate the mapping of light coherence onto atomic spin coherence.
Main Methods:
- Utilizing a vapor of Rubidium (Rb) atoms.
- Dynamically reducing the group velocity of a light pulse to zero.
- Mapping the light pulse's coherent excitation into a Zeeman (spin) coherence of the Rb atoms.
Main Results:
- Achieved effective deceleration and trapping of a light pulse within the Rb vapor.
- Demonstrated the ability to store the light pulse for a controlled duration.
- Successfully released the stored light pulse on demand.
Conclusions:
- The experiment successfully demonstrated the "storage of light" phenomenon.
- Reversible mapping of light coherence to atomic spin coherence is a viable mechanism for light storage.
- This technique offers potential for advancements in quantum technologies.
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