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Single-photon stored-light Ramsey interferometry using Rydberg polaritons
Optics Letters
|October 15, 2020
Summary
Researchers developed a single-photon stored-light interferometer using Rydberg polaritons in laser-cooled atoms. This novel interferometer, storing photons for up to 450 ns, shows sensitivity to external fields for potential sensing applications.
Area of Science:
- Quantum optics
- Atomic physics
- Quantum sensing
Background:
- Interferometry is a key technique in precision measurement.
- Storing photons in atomic ensembles offers new possibilities for quantum information processing.
Purpose of the Study:
- To demonstrate a single-photon interferometer based on stored light.
- To investigate the potential of this system for localized sensing applications.
Main Methods:
- Utilizing laser-cooled atomic ensembles to store photons as Rydberg polaritons.
- Implementing a Ramsey sequence to create and recombine photon paths.
- Storing photons for up to 450 nanoseconds, equivalent to 135 meters of free-space propagation.
Main Results:
- Successful demonstration of a single-photon stored-light interferometer.
- Observation of interferometer fringes sensitive to external fields.
- Achieved photon storage times enabling long effective propagation distances.
Conclusions:
- Stored-light interferometry with Rydberg polaritons is feasible.
- This technique holds promise for highly localized field sensing applications.
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