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Generation and sudden death of entanglement in qubit–qutrit systems with depolarising noise

Published online by Cambridge University Press:  10 April 2013

SALMAN KHAN
SALMAN KHAN*
Affiliation:
Department of Physics, Comsats Institute of Information Technology, Chak Shahzad, Islamabad, Pakistan Email: sksafi@phys.qau.edu.pk
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Abstract

In this paper we study the dynamics of entanglement in some hybrid qubit–qutrit systems under the influence of global, collective, local and multilocal depolarising noise. We show that depolarising noise can be used to induce entanglement. A critical point exists under every coupling of the system with the environment at which all the states are equally entangled. Furthermore, we show that no ESD occurs when either only the qubit is coupled to its local environment or the system is coupled to a multilocal or global environment. This is an important result for various quantum information processing tasks and thus merits further investigation.

Type
Paper
Information
Mathematical Structures in Computer Science , Volume 23 , Issue 6 , December 2013 , pp. 1220 - 1233
Copyright
Copyright © Cambridge University Press 2013 

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