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Simulating Anisotropic quantum Rabi model via frequency modulation.

Gangcheng Wang1, Ruoqi Xiao2, H Z Shen3

  • 1Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun, 130024, China. wanggc000@163.com.

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|March 16, 2019
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Summary
This summary is machine-generated.

We present a feasible scheme to implement the anisotropic quantum Rabi model using circuit quantum electrodynamics. This method allows tuning coupling strengths and exploring ultrastrong coupling regimes for quantum optics applications.

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Area of Science:

  • Quantum Optics
  • Solid-State Physics
  • Mesoscopic Physics

Background:

  • The anisotropic quantum Rabi model is a generalization of the quantum Rabi model.
  • It is fundamental for understanding quantum optics, solid-state, and mesoscopic physics.

Purpose of the Study:

  • To propose an experimentally feasible scheme for implementing the anisotropic quantum Rabi model.
  • To explore tunable parameters and ultrastrong coupling regimes.

Main Methods:

  • Utilizing circuit quantum electrodynamics with periodic frequency modulation.
  • Deriving an effective Hamiltonian from a modulated qubit-resonator coupling system.
  • Adjusting system parameters via driving fields (phases, frequencies, amplitudes).

Main Results:

  • Demonstrated a tunable anisotropic quantum Rabi model.
  • Achieved transitions from dispersive to ultrastrong and deep-strong coupling regimes.
  • Validated the effective Hamiltonian's validity in ultrastrong coupling regimes.
  • Showcased generalization to multi-qubit systems and applications like Schrödinger cat states and quantum gates.

Conclusions:

  • The proposed scheme enables the study of the anisotropic quantum Rabi model in circuit QED.
  • It facilitates exploration of ultrastrong and deep-strong coupling regimes.
  • This work paves the way for investigating stronger anisotropic Rabi models.