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.
|Numero di pagine||5|
|Rivista||PHYSICAL REVIEW A|
|Stato di pubblicazione||Published - 2010|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics