Entanglement distillation with local common reservoirs
Douglas F. Mundarain, Miguel Orszag · Physical Review A · 2009
In this work, we study a system composed of four two-level particles, two source entangled qubits $AB$, and two ancilla entangled qubits ${A}^{\ensuremath{'}}{B}^{\ensuremath{'}}$, in the presence of two local common reservoirs, i.e., one reservoir for subsystem $A{A}^{\ensuremath{'}}$ and another for $B{B}^{\ensuremath{'}}$. For initial maximal entangled states, we study the entanglement of the source if after evolution the ancilla is measured at time $t$.