We study entanglement degradation of two noninteracting 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 of implementing on-chip local and entangling operations is briefly discussed.

Bellomo, B., Compagno, G., D'Arrigo, A., Falci, G., Lo Franco, R., Paladino, E. (2010). Entanglement degradation in the solid state: interplay of adiabatic and quantum noise. PHYSICAL REVIEW A, 2010(81), 062309-1-062309-5 [10.1103/PhysRevA.81.062309].

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

BELLOMO, Bruno;COMPAGNO, Giuseppe;LO FRANCO, Rosario;
2010-01-01

Abstract

We study entanglement degradation of two noninteracting 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 of implementing on-chip local and entangling operations is briefly discussed.
2010
Settore FIS/03 - Fisica Della Materia
Bellomo, B., Compagno, G., D'Arrigo, A., Falci, G., Lo Franco, R., Paladino, E. (2010). Entanglement degradation in the solid state: interplay of adiabatic and quantum noise. PHYSICAL REVIEW A, 2010(81), 062309-1-062309-5 [10.1103/PhysRevA.81.062309].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/50871
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