Uncovering measurement-induced entanglement via directional adaptive dynamics and incomplete information

• URL: http://arxiv.org/abs/2310.01338v2
• Date: Thu, 21 Nov 2024 03:52:12 GMT
• Title: Uncovering measurement-induced entanglement via directional adaptive dynamics and incomplete information
• Authors: Yu-Xin Wang, Alireza Seif, Aashish A. Clerk,
• Abstract summary: rich entanglement dynamics and transitions exhibited by monitored quantum systems typically only exist in the conditional state. We construct a general recipe for mimicking the conditional entanglement dynamics of a monitored system in a corresponding measurement-free dissipative system. We illustrate our ideas in a bosonic system featuring a competition between entangling measurements and local unitary dynamics.
• Score: 20.73945056429988
• License:
• Abstract: The rich entanglement dynamics and transitions exhibited by monitored quantum systems typically only exist in the conditional state, making observation extremely difficult. In this work we construct a general recipe for mimicking the conditional entanglement dynamics of a monitored system in a corresponding measurement-free dissipative system involving directional interactions between the original system and a set of auxiliary register modes. This mirror setup autonomously implements a measurement-feedforward dynamics that effectively retains a coarse-grained measurement record. We illustrate our ideas in a bosonic system featuring a competition between entangling measurements and local unitary dynamics, and also discuss extensions to qubit systems and truly many-body systems.

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