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Updated: Jun 21, 2026
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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Generation of two-mode squeezed and entangled light in a single temporal and spatial mode
W Wasilewski1, T Fernholz, K Jensen
1Niels Bohr Institute, Danish Research Foundation Center for Quantum Optics(QUANTOP), Blegdamsvej 17, DK-2100 Copenhagen, Denmark. wwasil@nbi.dk
Optics Express
|August 6, 2009
Summary
Researchers demonstrate a new method for creating squeezed light using atomic vapors. This robust, low-power technique generates entangled light states ideal for quantum information processing and atom-based quantum protocols.
Area of Science:
- Quantum Optics
- Atomic Physics
Background:
- Squeezed states of light are crucial for quantum information processing.
- Generating squeezed states efficiently and robustly is an ongoing challenge.
Purpose of the Study:
- To analyze a novel squeezing and entangling mechanism.
- To experimentally demonstrate the generation of squeezed light using atomic vapors.
Main Methods:
- Developed a quantum model for alkali atomic vapor with quantized collective atomic states.
- Experimentally demonstrated pulsed frequency nondegenerate squeezed states using room-temperature cesium vapor.
Main Results:
- Achieved 3.5 dB squeezing of light.
- Generated squeezed states in the same spatial and single temporal mode.
- Entangled modes separated by tunable Zeeman frequency.
Conclusions:
- The novel mechanism provides a robust and efficient source of squeezed light.
- The generated narrow-band squeezed light is suitable for atom-based quantum information protocols.
- Single temporal mode squeezed light is a promising resource for quantum information processing.
