Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Monitored quantum circuits have attracted significant interest as an example of synthetic quantum matter, intrinsically defined by their quantum information content. Here, we propose a multipartite entanglement perspective on monitored phases through the lens of quantum Fisher information. Our findings reveal that unstructured monitored random circuits fail to exhibit divergent multipartite entanglement even at criticality, highlighting their departure from standard quantum critical behavior. However, we demonstrate that genuinely multipartite entangled phases can be realized through two-site measurements, provided a protection mechanism is in place. This work positions multipartite entanglement as a valuable perspective for the study of interacting monitored circuits and broader frameworks of noisy quantum dynamics.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/fl34-h1p1 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Extracting Topological Spins from Bulk Multipartite Entanglement.
Phys Rev Lett
August 2025
Weizmann Institute of Science, Department of Condensed Matter Physics, Rehovot 7610001, Israel.
We address the problem of identifying a 2+1D topologically ordered phase using measurements on the ground-state wave function. For nonchiral topological order, we describe a series of bulk multipartite entanglement measures that extract the invariants ∑_{a} d_{a}^{2}θ_{a}^{r} for any r≥2, where d_{a} and θ_{a} are the quantum dimension and topological spin of an anyon a, respectively. These invariants are obtained as expectation values of permutation operators between 2r replicas of the wave function, applying different permutations on four distinct regions of the plane.
View Article and Find Full Text PDFMultipartite Entanglement Structure of Monitored Quantum Circuits.
Phys Rev Lett
August 2025
Institut für Theoretische Physik, Universität zu Köln, Zülpicher Straße 77, 50937 Cologne, Germany.
Monitored quantum circuits have attracted significant interest as an example of synthetic quantum matter, intrinsically defined by their quantum information content. Here, we propose a multipartite entanglement perspective on monitored phases through the lens of quantum Fisher information. Our findings reveal that unstructured monitored random circuits fail to exhibit divergent multipartite entanglement even at criticality, highlighting their departure from standard quantum critical behavior.
View Article and Find Full Text PDFEntanglement Measure-Based Sliding Mode Control for Quantum State Preparation.
IEEE Trans Cybern
August 2025
Entangled states are fundamental to QIP. However, many existing quantum control methods rely on predefined target states, limiting their flexibility in accommodating diverse entanglement structures. This article introduces a SMC framework that utilizes an entanglement measure as the sliding surface, enabling the generation of entangled states without specifying a fixed target.
View Article and Find Full Text PDFQuantum entanglement serves as a foundational resource for various quantum technologies. In optical systems, entanglement distribution relies on the indistinguishability and spatial overlap of photons. Heralded schemes play a crucial role in ensuring the reliability of entanglement generation by detecting ancillary photons to signal the creation of desired entangled states.
View Article and Find Full Text PDFGeneration of multipartite entanglement in a cavity-magnomechanical system.
Opt Express
February 2025
Generating multipartite entanglement is always a popular research field in quantum information processing and quantum optics. In this paper, we propose a scheme to realize all bipartite entanglements and the tripartite entanglement among photon, magnon, and phonon modes in a cavity-magnomechanical system. The center-of-mass motion of a yttrium iron garnet sphere couples to the magnon and constitutes photon-magnon-phonon tripartite interaction.
View Article and Find Full Text PDF