Engineered Tunable Decay Rate and Controllable Dissipative Dynamics
arXiv:2204.02561 · doi:10.1063/1.3700437
Abstract
We investigate the steering dissipative dynamics of a two-level system (qubit) by means of the modulation of an assisted tunneling degree of freedom which is described by a quantum-oscillator spin-boson model. Our results reveal that the decoherence rate of the qubit can be significantly suppressed and simultaneously its quality factor is enhanced. Moreover, the modulated dynamical susceptibility exhibits a multi-peak feature which is indicative of the underlying structure and measurable in experiment. Our findings demonstrate that the interplay between the combined degrees of freedom and the qubit is crucial for reducing the dissipation of qubit and expanding the coherent regime of quantum operation much large. The strategy might be used to fight against deterioration of quantum coherence in quantum information processing.
arXiv comment5 pages, 2 figures
References in corpus (17)
- Quantum Computing
- Coherent manipulation of electronic states in a double quantum dot
- Efficient simulation of strong system-environment interactions
- Coherent and Collective Quantum Optical Effects in Mesoscopic Systems
- Charge-qubit operation of an isolated double quantum dot
- Spin Precession and Real Time Dynamics in the Kondo Model: A Time-Dependent Numerical Renormalization-Group Study
- Low-temperature dynamical simulation of spin-boson systems
- Numerical Renormalization Group for Quantum Impurities in a Bosonic Bath
- Noise and decoherence in quantum two-level systems
- Phonon-assisted transitions from quantum dot excitons to cavity photons
- Cavity quantum electrodynamics with semiconductor quantum dots: The role of phonon-assisted cavity feeding
- Equilibrium dynamics of the dissipative two-state system
- Quantum dynamics of the dissipative two-state system coupled with a sub-Ohmic bath
- Real-Time-RG Analysis of the Dynamics of the Spin-Boson Model
- Vibration-enhanced quantum transport
- Dynamical Behavior of the Dissipative Two-State System
- Non-Markovian dynamical effects and time evolution of entanglement entropy of a dissipative two-state system