Quantum Zeno dynamics and quantum Zeno subspaces
Paolo Facchi, Giuseppe Marmo, Saverio Pascazio

TL;DR
This paper explores the continuous quantum Zeno effect, analyzing how frequent measurements or couplings partition the Hilbert space into subspaces that hinder transitions, with practical applications and a proposed experiment.
Contribution
It provides a detailed analysis of continuous quantum Zeno dynamics, introduces new examples, and proposes a novel experiment to demonstrate these effects.
Findings
Partition of Hilbert space into Zeno subspaces
Transition hindrance within subspaces
Practical applications of Zeno dynamics
Abstract
A quantum Zeno dynamics can be obtained by means of frequent measurements, frequent unitary kicks or a strong continuous coupling and yields a partition of the total Hilbert space into quantum Zeno subspaces, among which any transition is hindered. We focus on the "continuous" version of the quantum Zeno effect and look at several interesting examples. We first analyze these examples in practical terms, towards applications, then propose a novel experiment.
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