Structured environments in solid state systems: crossover from Gaussian to non-Gaussian behavior
arXiv:0801.4331 · doi:10.1016/j.physe.2007.05.002
Abstract
The variety of noise sources typical of the solid state represents the main limitation toward the realization of controllable and reliable quantum nanocircuits, as those allowing quantum computation. Such ``structured environments'' are characterized by a non-monotonous noise spectrum sometimes showing resonances at selected frequencies. Here we focus on a prototype structured environment model: a two-state impurity linearly coupled to a dissipative harmonic bath. We identify the time scale separating Gaussian and non-Gaussian dynamical regimes of the Spin-Boson impurity. By using a path-integral approach we show that a qubit interacting with such a structured bath may probe the variety of environmental dynamical regimes.
8 pages, 9 figures. Proceedings of the DECONS '06 Conference
References in corpus (21)
- Quantum state engineering with Josephson-junction devices
- Coherent control of macroscopic quantum states in a single-Cooper-pair box
- Manipulating the Quantum State of an Electrical Circuit
- Coherent Quantum Dynamics of a Superconducting Flux Qubit
- Quantum oscillations in two coupled charge qubits
- Decoherence in a superconducting quantum bit circuit
- Decoherence in Josephson Qubits from Junction Resonances
- Decoherence and 1/f noise in Josephson qubits
- Charge echo in a Cooper-pair box
- Double Quantum Dots as Detectors of High-Frequency Quantum Noise in Mesoscopic Conductors
- Quantum noise in the Josephson charge qubit
- Low-frequency noise as a source of dephasing of a qubit
- Non-Gaussian low-frequency noise as a source of qubit decoherence
- Low- and high-frequency noise from coherent two-level systems
- Dephasing of solid-state qubits at optimal points
- Initial decoherence in solid state qubits
- Noise in Al single electron transistors of stacked design
- Quantum two level systems and Kondo-like traps as possible sources of decoherence in superconducting qubits
- Models of environment and T_1 relaxation in Josephson Charge Qubits
- Non-Markoffian effects of a simple nonlinear bath
- Modulation of dephasing due to a spin-boson environment
Cited by in corpus (5)
- Non-Markovianity of colored noisy channels
- Dynamical heat engines with non--Markovian reservoirs
- Stochastic Bloch-Redfield theory: quantum jumps in a solid-state environment
- Dissipation-induced collective advantage of a quantum thermal machine
- Efficiency and thermodynamic uncertainty relations of a dynamical quantum heat engine