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

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

2010-01-27

arxiv.org/abs/1001.4875v2

Physical Review A 81, 062309 (2010)

Physics

Quantum Physics

Replaced with published version. Minor changes

Scientific paper

10.1103/PhysRevA.81.062309

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.

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