Regular Article

Protection of entanglement for a two-qutrit V-type open system on the basis of system-reservoir bound states^★

¹ Physics Department, Azarbaijan Shahid Madani University, Tabriz, Iran
² Research Institute for Fundamental Sciences, University of Tabriz, Tabriz, Iran

^a e-mail: bahramahansaz@gmail.com

Received: 7 August 2018
Received in final form: 31 January 2019
Published online: 14 March 2019

Abstract

In this work, a mechanism for long time protection of entanglement of a two-qutrit V-type atomic system each of which interacts independently with a dissipative reservoir is investigated. It is shown that the protection process is related exclusively on the formation of bound states in system-reservoir energy spectrum. It is demonstrated that the degree of boundedness for the system-reservoir bound states is well-controlled by entering other V-type qutrits into the reservoirs, and also through the manipulation of the spontaneously generated interference related to decay channels of the V-type atoms.