Quantum impurity models of noisy qubits

Abstract

We demonstrate that the problem of coupled two-level systems ("qubits") which are also subject to a generic (sub)Ohmic dissipative environment belongs to the same class of models as those describing (non)magnetic impurities embedded in strongly correlated systems. A further insight into the generalized single- and two-impurity Bose/Fermi Kondo models enables one to make specific recommendations towards a systematic engineering of highly coherent multi-qubit assemblies for potential applications in quantum information processing.

Latex, 5 pages, no figures

References in corpus (11)

• Numerical Renormalization Group for Bosonic Systems and Application to the Subohmic Spin-Boson Model
• Quantum Phase Transition in a Multi-Level Dot
• Critical local moment fluctuations in the Bose-Fermi Kondo model
• Quantum phase transitions in models of coupled magnetic impurities
• Decoherence and dissipation during a quantum XOR gate operation
• Decoherence and gate performance of coupled solid state qubits
• Entanglement between a qubit and the environment in the spin-boson model
• Quantum phase transitions in the Bose-Fermi Kondo model
• Decoherence and dephasing in coupled Josephson-junction qubits
• Equilibrium Correlation Functions of the Spin-Boson Model with Sub-Ohmic Bath
• The quantum dynamics of two coupled qubits

Cited by in corpus (15)

• Numerical Renormalization Group for Quantum Impurities in a Bosonic Bath
• Equilibrium and non-equilibrium dynamics of the sub-ohmic spin-boson model
• Critical and strong-coupling phases in one- and two-bath spin-boson models
• Quantum Entanglement in the Two Impurity Kondo Model
• Dissipation due to two-level systems in nano-mechanical devices
• Tensor Network simulation of polaron-polaritons in organic microcavities
• Dynamics of the sub-Ohmic spin-boson model: a time-dependent variational study
• Two-bath spin-boson model: Phase diagram and critical properties
• Symmetry and the critical phase of the two-bath spin-boson model: Ground-state properties
• Sub-Ohmic spin-boson model with off-diagonal coupling: Ground state properties
• Solvable models of two-level systems coupled to itinerant electrons: Robust non-Fermi liquid and quantum critical pairing
• Numerical Renormalization Group for Impurity Quantum Phase Transitions: Structure of Critical Fixed Points
• Frustration-induced anomalous transport and strong photon decay in waveguide QED
• Equilibrium Dynamics of the Sub-Ohmic Spin-boson Model At Finite Temperature
• Spin-orbit coupled spin-boson model : A variational analysis