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Updated: Feb 12, 2026
05:39
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
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Probing the strongly driven spin-boson model in a superconducting quantum circuit.
L Magazzù1, P Forn-Díaz2,3,4,5, R Belyansky2,6
1Institute of Physics, University of Augsburg, Universitätsstraße 1, D-86135, Augsburg, Germany.
Nature Communications
|April 13, 2018
Summary
Intense driving of quantum systems amplifies environmental effects, suppressing coherence. Tuning drive amplitude can induce a transition from coherent to incoherent states in dissipative quantum systems.
Area of Science:
- Quantum physics
- Open quantum systems
- Quantum information science
Background:
- Quantum two-level systems interacting with their environment lose quantum coherence, a phenomenon described by the spin-boson model.
- Understanding the impact of external driving on these dissipative systems is crucial for quantum technologies.
Purpose of the Study:
- To investigate how intense coherent driving affects a strongly dissipative quantum system, specifically a superconducting qubit.
- To explore the realization of the driven Ohmic spin-boson model in a superconducting circuit.
Main Methods:
- Experimental investigation of a superconducting qubit coupled to an electromagnetic environment under coherent drive.
- Theoretical analysis of the driven Ohmic spin-boson model.
Main Results:
- Coherent driving was shown to reinforce the environmental suppression of quantum coherence.
- A transition from a coherent to an incoherent state was achieved by adjusting the drive amplitude.
- An out-of-equilibrium detailed balance relation was experimentally demonstrated.
Conclusions:
- The study advances the fundamental understanding of driven open quantum systems.
- Results offer potential pathways for designing entangled light-matter states.
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