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arXiv:quant-ph/0102129 · Physics Letters A

Quantum Zeno effect in trapped ions

Benedetto Militello, ANTONINO MESSINA, Anna Napoli

Published Aug 1, 2001• 16 citations
arXivHTMLPDF
DOI
10.1016/s0375-9601(01)00462-5

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Abstract The control of thermal decoherence via dynamical decoupling and via the quantum Zeno effect (Zeno control) is investigated for a model of trapped ion, where the dynamics of two low‐lying hyperfine states undergoes decoherence due to the thermal interaction with an excited state. Dynamical decoupling is a procedure that consists in periodically driving the excited state, while the Zeno control consists in frequently measuring it. When the control frequency is high enough, decoherence is shown to be suppressed. Otherwise, both controls may accelerate decoherence. © 2004 Wiley Periodicals, Inc. Int J Quantum Chem, 2004