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Coherent transfer of topological interface states.
Optics Express
|December 31, 2020
Summary
We show how to move topological interface states in Bose-Einstein condensates using a patterned pump. This method preserves coherence for potential long-range quantum state transfer.
Area of Science:
- Quantum physics
- Condensed matter physics
- Non-Hermitian systems
Background:
- Topological states offer robust quantum information transfer.
- Non-Hermitian systems are crucial for open quantum systems and dissipation.
- Bose-Einstein condensates provide a controllable platform for quantum phenomena.
Purpose of the Study:
- To demonstrate controlled coherent transfer of topological interface states.
- To explore topological protection in open-dissipative systems.
- To investigate the feasibility of long-range coherent quantum state transfer.
Main Methods:
- Utilizing a one-dimensional non-Hermitian chain of interacting Bose-Einstein condensates.
- Implementing a spatially patterned pump to drive state transfer.
- Employing stochastic calculations to verify the coherent nature of the transfer.
- Modeling the system with coupled micropillars and quantum wells (exciton-polariton resonances).
Main Results:
- Successful controlled coherent transfer of topological interface states was demonstrated.
- Topological protection was confirmed to stem from the spatially patterned pump.
- Stochastic calculations validated the coherent nature of the interface state transfer.
- Preservation of coherence degree after multiple transitions was observed for specific parameters.
Conclusions:
- The study establishes a method for controlled coherent transfer of topological interface states in open-dissipative systems.
- The findings pave the way for long-range transfer of coherent quantum states.
- The proposed system using Bose-Einstein condensates offers a promising testbed for quantum technologies.
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