Entanglement degradation in the solid state: interplay of adiabatic and quantum noise

Abstract

We study entanglement degradation of two non-interacting qubits subject to independent baths with broadband spectra typical of solid state nanodevices. We obtain the analytic form of the concurrence in the presence of adiabatic noise for classes of entangled initial states presently achievable in experiments. We find that adiabatic (low frequency) noise affects entanglement reduction analogously to pure dephasing noise. Due to quantum (high frequency) noise, entanglement is totally lost in a state-dependent finite time. The possibility to implement on-chip both local and entangling operations is briefly discussed.

Replaced with published version. Minor changes

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• Design of a Lambda system for population transfer in superconducting nanocircuits
• Entanglement dynamics in superconducting qubits affected by local bistable impurities
• Engineering decoherence for two-qubit systems interacting with a classical environment
• Creation and protection of entanglement in systems out of thermal equilibrium
• Steady entanglement out of thermal equilibrium
• Overview on the phenomenon of two-qubit entanglement revivals in classical environments
• Dynamics of spatially indistinguishable particles and entanglement protection
• Sensitivity of the decay of entanglement of quantum dot spin qubits to the magnetic field
• The dynamics of two entangled qubits exposed to classical noise: role of spatial and temporal noise correlations
• Dynamics of entanglement of two electron spins interacting with nuclear spin baths in quantum dots
• Time-evolution of entanglement and quantum discord of bipartite systems subject to 1/f^α noise
• Spin-echo entanglement protection from random telegraph noise
• Quantum correlations of identical particles subject to classical environmental noise
• The relation between the quantum discord and quantum teleportation: the physical interpretation of the transition point between different quantum discord decay regimes
• Effectiveness of Depolarizing noise in causing sudden death of entanglement
• Entanglement thresholds for displaying the quantum nature of teleportation
• Decay of nonlocality due to adiabatic and quantum noise in the solid state
• Role of complementary correlations in the evolution of classical and quantum correlations under Markovian decoherence