Quantum Brownian motion under generalized position measurements: A converse Zeno scenario
L. Magazz\`u, P. Talkner, P. H\"anggi
TL;DR
This paper investigates how repeated generalized position measurements affect quantum Brownian motion, revealing that increasing measurement frequency does not lead to the quantum Zeno freeze-in effect, contrary to common expectations.
Contribution
It provides exact analytical results showing the absence of the Zeno effect in monitored quantum Brownian motion with generalized measurements.
Findings
No freeze-in Zeno effect occurs at high measurement frequencies.
Measurement backaction and dissipation interplay analyzed.
Similar behavior observed with momentum measurements.
Abstract
We study the quantum Brownian motion of a harmonic oscillator undergoing a sequence of generalized position measurements. Our exact analytical results capture the interplay of the measurement backaction and dissipation. Here we demonstrate that no freeze-in Zeno effect occurs upon increasing the monitoring frequency. A similar behavior is also found in the presence of generalized momentum measurements.
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