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Unique Steady-State Squeezing in a Driven Quantum Rabi Model.

Karol Gietka1, Christoph Hotter1, Helmut Ritsch1

  • 1Institut für Theoretische Physik, Universität Innsbruck, A-6020 Innsbruck, Austria.

Physical Review Letters
|December 15, 2023
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Summary
This summary is machine-generated.

We demonstrate a new type of steady-state squeezing in quantum Rabi and Dicke models. This quantum squeezing offers time-independent uncertainties and dynamics, crucial for advanced quantum technologies.

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Area of Science:

  • Quantum physics
  • Quantum optics
  • Quantum information science

Background:

  • Squeezing is a fundamental quantum phenomenon vital for quantum technologies.
  • Existing methods for generating squeezing often involve complex setups or transient states.

Purpose of the Study:

  • To introduce and characterize a novel type of steady-state squeezing.
  • To explore the generation of this squeezing in quantum Rabi and Dicke models.
  • To investigate its potential applications in quantum measurement and control.

Main Methods:

  • Eliminating spin dynamics to create an abstract harmonic oscillator.
  • Driving the system to induce and sustain quantum squeezing.
  • Analyzing the properties of the generated squeezing, including uncertainties and dynamics.

Main Results:

  • A novel steady-state squeezing has been successfully generated.
  • The squeezing exhibits time-independent uncertainties and dynamics.
  • The phenomenon is demonstrated within the framework of the quantum Rabi and Dicke models.

Conclusions:

  • This work presents a new pathway for generating robust quantum squeezing.
  • The demonstrated steady-state squeezing has potential applications in continuous back-action evading measurements.
  • The effect is expected to be observable in current experimental systems like optomechanical setups and Coulomb crystals.