Measures of Decoherence

Abstract

Methods for quantifying environmentally induced decoherence in quantum systems are investigated. We formulate criteria for measuring the degree of decoherence and consider several representative examples, including a spin interacting with the modes of a bosonic, e.g., phonon, bath. We formulate an approach based on the operator norm measuring the deviation of the actual density matrix from the ideal one which would describe the system without environmental interactions.

Cited by in corpus (16)

• Decoherence Rate of Semiconductor Charge Qubit Coupled to Acoustic Phonon Reservoir
• Short-Time Decoherence for General System-Environment Interactions
• Additivity of decoherence measures for multiqubit quantum systems
• Collective Decoherence of Nuclear Spin Clusters
• Decoherence dynamics of a qubit coupled to a quantum two-level system
• Short-time decoherence of Josephson charge qubit nonlinearly coupling with its environment
• Short-time decoherence of Josephson charge qubits
• Onset of Decoherence in Open Quantum Systems
• Decoherence Rates in Large Scale Quantum Computers and Macroscopic Systems
• Quantitative Treatment of Decoherence
• Short-time decoherence of Josephson charge qubits in Ohmic and 1/f noise environment
• Method for noise-induced regularization in quantum neural networks
• Robustness of deformed catlike states under dissipative decoherence
• Decoherence of Dynamically Manipulated Qubits
• Protecting quantum systems from decoherence with unitary operations
• Quantifying Decoherence