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https://www.um.edu.mt/library/oar/handle/123456789/100299
Title: | Manipulating and protecting entanglement by means of spin environments |
Authors: | Apollaro, Tony John George Cuccoli, A. Di Franco, C. Paternostro, Mauro Plastina, Francesco Verrucchi, P. |
Keywords: | Quantum systems Quantum entanglement Spintronics Quantum electrodynamics |
Issue Date: | 2010 |
Publisher: | IOP Publishing |
Citation: | Apollaro, T. J. G., Cuccoli, A., Di Franco, C., Paternostro, M., Plastina, F., & Verrucchi, P. (2010). Manipulating and protecting entanglement by means of spin environments. New Journal of Physics, 12(8), 083046. |
Abstract: | We study the dynamical behavior of two initially entangled qubits, each locally coupled to an environment embodied by an interacting spin chain. We consider energy-exchange qubit–environment couplings resulting in rich and highly non-trivial entanglement dynamics. We obtain exact results for the time evolution of the concurrence between the two qubits and find that, by tuning the interaction parameters, one can freeze the dynamics of entanglement, therefore inhibiting their relaxation into the spin environments, as well as activate a sudden-death phenomenon. We also discuss the effects of an environmental quantum phase transition on the features of the two-qubit entanglement dynamics. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/100299 |
Appears in Collections: | Scholarly Works - FacSciPhy |
Files in This Item:
File | Description | Size | Format | |
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Manipulating_and_protecting_entanglement.pdf | 902.81 kB | Adobe PDF | View/Open |
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