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Quantum Phases in a Quantum Rabi Triangle.

Yu-Yu Zhang1,2, Zi-Xiang Hu1,2, Libin Fu3

  • 1Department of Physics, Chongqing University, Chongqing 401330, China.

Physical Review Letters
|August 23, 2021
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Summary
This summary is machine-generated.

Researchers explored a quantum Rabi triangle system to synthesize artificial magnetic fields. They discovered a chiral-coherent phase with unidirectional photon flow, offering insights into quantum many-body phases and quantum information technologies.

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Area of Science:

  • Quantum physics
  • Condensed matter theory
  • Quantum optics

Background:

  • Quantum many-body phases arise from interactions, symmetries, and gauge fields.
  • Understanding emerging phases is crucial for quantum technologies.

Purpose of the Study:

  • To investigate a quantum Rabi triangle system as a building block for artificial magnetic fields.
  • To explore the phase diagram and quantum criticality of this system.

Main Methods:

  • Development of an analytical approach to study the quantum Rabi triangle system.
  • Finite-frequency scaling analysis to characterize phase transitions.

Main Results:

  • Identification of a chiral-coherent phase breaking Z_{2} and chiral symmetry.
  • Observation of unidirectional photon flow tunable by an artificial gauge field.
  • Phase transition confirmed to be in the universality class of the Dicke model.

Conclusions:

  • The quantum Rabi triangle system provides a platform for synthesizing artificial magnetic fields.
  • The discovered chiral phase exhibits broken time-reversal symmetry.
  • This system has potential applications in quantum information technologies.