Vacuum-Induced Symmetry Breaking in a Superconducting Quantum Circuit
arXiv:1406.5119 · doi:10.1103/PhysRevA.90.043817
Abstract
The ultrastrong-coupling regime, where the atom-cavity coupling rate reaches a considerable fraction of the cavity or atom transition frequencies, has been reported in a flux qubit superconducting quantum circuit coupled to an on-chip coplanar resonator. This regime enables the possibility of manipulating the cavity quantum electrodynamic ground state with controllable physical properties and situations may arise where the resonator field acquires a nonzero expectation value in the system ground state. We demonstrate that in this case the parity symmetry of an additonal artificial atom with an even potential is broken by the interaction with the resonator. Such mechanism is in close analogy with the Higgs mechanism where the gauge symmetry of the weak force's gauge bosons is broken by the nonzero vacuum expectation value of the Higgs field. The results here presented open the way to controllable experiments on symmetry breaking mechanisms induced by nonzero vacuum expectation values. Moreover the here proposed mechanism can be used as a probe of the ground state macroscopic coherence emerging from quantum phase transitions with vacuum degeneracy.
7 pages, 4 figures
References in corpus (10)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Beyond the Jaynes-Cummings model: circuit QED in the ultrastrong coupling regime
- Superconducting Circuits and Quantum Information
- Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime
- Ultra-Strong Light-Matter Coupling Regime with Polariton Dots
- Is there a no-go theorem for superradiant quantum phase transitions in cavity and circuit QED ?
- Two-photon probe of the Jaynes-Cummings model and symmetry breaking in circuit QED
- Nonclassical Radiation from Thermal Cavities in the Ultrastrong Coupling Regime
- Photon emission via vacuum-dressed intermediate states under ultrastrong coupling
- Thermal emission in the ultrastrong coupling regime
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