Controlling measurement-induced phase transitions with tunable detector coupling

Ritu Nehra, Alessandro Romito, Dganit Meidan

Research output: Contribution to journalArticlepeer-review

Abstract

We study the evolution of a quantum many-body system driven by two competing measurements, which induces a topological entanglement transition between two distinct area law phases. We employ a positive operator-valued measurement with variable coupling between the system and detector within free fermion dynamics. This approach allows us to continuously track the universal properties of the transition between projective and continuous monitoring. Our findings suggest that the percolation universality of the transition in the projective limit is unstable when the system-detector coupling is reduced.

Original languageAmerican English
JournalQuantum
Volume9
DOIs
StatePublished - 1 Jan 2025

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

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