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Simulating topological phases with atom arrays in an optical waveguide.

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|November 11, 2022

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This study simulates topological phases using atomic arrays in optical waveguides. Researchers demonstrated control over topological phases and transitions via driving, enabling topological state transfer.

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Area of Science:

Quantum optics
Condensed matter physics
Topological photonics

Background:

Topological phases in quantum systems offer robust properties.
Optical waveguides provide a platform for simulating quantum phenomena.
Simulating topological phases requires precise control over quantum interactions.

Purpose of the Study:

To simulate topological phases using atomic arrays in one-dimensional optical waveguides.
To investigate the induction of topological phase transitions via periodic atomic driving.
To explore the impact of next-nearest neighbor interactions on topological state transfer.

Main Methods:

Modeling waveguides as one-dimensional coupled cavity arrays.
Establishing coherent and dissipative coupling under Markov approximation.
Designing atomic arrays with varying geometries and applying periodic driving.

Main Results:

Successfully simulated topologically trivial and non-trivial phases of atomic arrays.
Demonstrated induction of topological phase transitions by adjusting driving parameters.
Identified that next-nearest neighbor interactions break bandgap degeneracy and enable topological state transfer.

Conclusions:

Atomic arrays in optical waveguides are effective for simulating topological phases.
Periodic driving offers a method to control topological phase transitions.
Next-nearest neighbor interactions are crucial for robust topological state transfer.