Microwave Scattering in the Subohmic Spin-Boson Systems of Superconducting Circuits

Abstract

We study quantum critical phenomena in the microwave scattering of the subohmic spin-boson system, which exhibits a quantum phase transition at a critical system-reservoir coupling. By relating the reflection coefficient of a microwave with the dynamic susceptibility of the subohmic spin-boson system, we clarify the appearance of quantum critical phenomena in microwave scattering. Further, we propose experimental setups to realize the subohmic spin-boson system in a superconducting circuit composed of a charge qubit and a dissipative transmission line.

8 pages, 8 figures

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Cited by in corpus (8)

• Taming Quantum Noise for Efficient Low Temperature Simulations of Open Quantum Systems
• Critical fluorescence of a transmon at the Schmid transition
• Photon-instanton collider implemented by a superconducting circuit
• Unveiling quantum entanglement and correlation of sub-Ohmic and Ohmic baths for quantum phase transitions in dissipative systems
• Quantum tricritical point emerging in the spin-boson model with two dissipative spins in staggered biases
• Quantum criticality of the Ohmic spin-boson model in a high dense spectrum: symmetries,quantum fluctuations and correlations
• Transient dynamical phase diagram of the spin-boson model
• Transient Dynamical Phase Diagram of the Spin-Boson Model at Finite Temperature