The sensitivity of a repeated measurement-based purification scheme to additional undesired couplings is analyzed, focusing on the very simple and archetypical system consisting of two two-level systems interacting with a repeatedly measured one. Several regimes are considered and in the strong coupling limit (i.e., when the coupling constant of the undesired interaction is very large) the occurrence of a quantum Zeno effect is proven to dramatically jeopardize the efficiency of the purification process.

Militello, B., & Napoli, A. (2018). Sensitivity of measurement-based purification processes to inner interactions. PHYSICA SCRIPTA, 93(2), 025101-1-025101-9 [10.1088/1402-4896/aa9c38].

Sensitivity of measurement-based purification processes to inner interactions

Militello, Benedetto
;
Napoli, Anna
2018

Abstract

The sensitivity of a repeated measurement-based purification scheme to additional undesired couplings is analyzed, focusing on the very simple and archetypical system consisting of two two-level systems interacting with a repeatedly measured one. Several regimes are considered and in the strong coupling limit (i.e., when the coupling constant of the undesired interaction is very large) the occurrence of a quantum Zeno effect is proven to dramatically jeopardize the efficiency of the purification process.
Settore FIS/03 - Fisica Della Materia
Militello, B., & Napoli, A. (2018). Sensitivity of measurement-based purification processes to inner interactions. PHYSICA SCRIPTA, 93(2), 025101-1-025101-9 [10.1088/1402-4896/aa9c38].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/290189
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