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Related Experiment Video

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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Published on: May 30, 2014

Electromagnetically induced transparency with tunable single-photon pulses.

M D Eisaman¹, A André, F Massou

¹Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.

|December 13, 2005

Summary

This summary is machine-generated.

Researchers used electromagnetically induced transparency (EIT) to control single photons for quantum networks. This technique enables controllable generation, transmission, and storage of photons, preserving their quantum properties.

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Area of Science:

Quantum optics
Atomic physics
Quantum information science

Background:

Controlled interactions between single photons and atoms are crucial for developing quantum networks.
Electromagnetically induced transparency (EIT) is a technique for manipulating light propagation in atomic ensembles, with applications in nonlinear optics.

Purpose of the Study:

To demonstrate the use of EIT for controllable generation, transmission, and storage of single photons.
To investigate the preservation of quantum properties of single photons during EIT propagation and storage.
To study the spectral and quantum statistical properties of narrow-bandwidth single-photon pulses.

Main Methods:

Utilizing EIT in an optically dense atomic ensemble (87Rb atoms) at room temperature.
Generating single photons in a 'source' atomic ensemble and interacting them with a 'target' ensemble.
Probing spectral and quantum statistical properties of single-photon pulses.

Main Results:

Demonstrated controllable generation, transmission, and storage of single photons with tunable frequency, timing, and bandwidth.
Confirmed that the quantum nature of narrow-bandwidth single-photon pulses is preserved under EIT propagation and storage.
Measured time delays due to reduced group velocity and observed photon storage and retrieval.

Conclusions:

EIT is a viable technique for manipulating single photons for quantum network applications.
The quantum properties of single photons are maintained during EIT-based processes.
This work advances the development of quantum memories and quantum communication systems.