Distillability sudden death in qutritqutrit systems under amplitude damping

Mazhar Ali (1)

1 Fachbereich Physik [Siegen]

Recently it has been discovered that certain two-qutrit entangled states interacting with global and/or multi-local decoherence undergo distillability sudden death (DSD). We investigate this phenomenon for qutrit-qutrit systems interacting with statistically independent zero-temperature reservoirs. We show that certain initially prepared free-entangled states become bound-entangled in a finite time due to the action of Markovian dissipative environment. As there is no definitive criterion for separability/entanglement of density matrices with dimension greater than six, therefore we believe that the results obtained in this paper are restricted for specific family of states considered here. Moreover, in contrast with local dephasing, simple local unitary transformations can completely avoid distillability sudden death under amplitude damping.

Mots clés: 03.65.Yz; 03.67.Mn; 03.65.Ud; 03.67.Pp

Mazhar Ali. Distillability sudden death in qutritqutrit systems under amplitude damping. Journal of Physics B: Atomic, Molecular and Optical Physics, 2010, 43 (4), pp.45504. ⟨10.1088/0953-4075/43/4/045504⟩. ⟨hal-00569866⟩