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Updated: Jul 8, 2025
09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
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Quantum metric and metrology with parametrically-driven Tavis-Cummings models.
Optics Express
|December 13, 2023
Summary
We investigated the quantum metric in a driven Tavis-Cummings model, revealing critical behaviors near a superradiant phase transition. This study proposes a quantum metrology protocol for enhanced measurement precision using these critical phenomena.
Area of Science:
- Quantum optics
- Quantum information science
- Condensed matter physics
Background:
- The Tavis-Cummings model describes interacting qubits and a quantized field.
- Parametric driving can break symmetries and induce phase transitions.
- Superradiant phase transitions are crucial in quantum many-body systems.
Purpose of the Study:
- To analyze the quantum metric in a driven Tavis-Cummings model.
- To characterize critical behaviors near a superradiant phase transition.
- To propose a quantum metrological protocol leveraging these critical behaviors.
Main Methods:
- Analytical solution of eigenenergies and eigenstates.
- Numerical simulation of system dynamics near the critical point.
- Definition of quantum metric based on quantum state response to control parameters.
Main Results:
- The quantum metric effectively characterizes critical behaviors near the superradiant phase transition.
- Spontaneous breaking of Z2 symmetry, induced by parametric driving, initiates the superradiant phase transition.
- The study identified specific critical behaviors of the quantum metric.
Conclusions:
- The quantum metric provides a powerful tool for understanding quantum phase transitions.
- A novel quantum metrology protocol can enhance measurement precision near criticality.
- The driven Tavis-Cummings model serves as a valuable platform for exploring quantum criticality and metrology.
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