Work

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

Year: 2024

Type: article

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 Letter, 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. Published by the American Physical Society 2024

Source: Physical Review A

DOI: 10.1103/physreva.110.l050602

Authors: Yu-Xin Wang, Alireza Seif, Aashish A. Clerk

Institutions: University of Chicago, Joint Center for Quantum Information and Computer Science, University of Maryland, College Park

Language: English

Topic: Quantum Mechanics and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,675

Funders: Simons Foundation, Air Force Office of Scientific Research