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Analysis of Controlled Rabi Flopping in a Double Rephasing Photon Echo Scheme for Quantum Memories
Rahmat Ullah1,2, Byoung S Ham1
1Center for Photon Information Processing, and School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Korea.
Entropy (Basel, Switzerland)
|December 8, 2020
Summary
This study demonstrates a novel double rephasing photon echo technique for quantum memories. Controlled Rabi flopping manipulates atomic coherence, enabling emissive photon echoes for advanced quantum information applications.
Area of Science:
- Quantum physics
- Quantum information science
- Atomic coherence control
Background:
- Photon echo techniques are crucial for quantum memory development.
- Controlling collective atom coherence is essential for robust quantum information processing.
- Existing single rephasing schemes have limitations in phase control.
Purpose of the Study:
- To analyze a double rephasing scheme for photon echo-based quantum memories.
- To investigate the use of controlled Rabi flopping for phase control of collective atom coherence.
- To achieve inversion-free photon echoes and manipulate their emissive properties.
Main Methods:
- Analysis of a double rephasing scheme for photon echoes.
- Utilizing controlled Rabi flopping between excited and auxiliary states for coherence manipulation.
- Investigating phase control of collective atom coherence.
Main Results:
- Controlled Rabi flopping induces coherence inversion, unlike single rephasing schemes.
- The double rephasing scheme allows manipulation of absorptive photon echoes to become emissive.
- Demonstrated quantum coherence control of atom phases in the double rephasing scheme.
Conclusions:
- The double rephasing photon echo scheme offers enhanced control over quantum memory properties.
- This method provides a pathway for creating emissive photon echoes for quantum memory applications.
- The technique advances the development of robust and efficient quantum memory systems.
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