ICTS:30881

Video URL

Measurement-Induced Phase Transition in a Quantum Ising System

Measurement-Induced Phase Transition in a Quantum Ising System

(2025). Measurement-Induced Phase Transition in a Quantum Ising System. SciVideos. https://youtube.com/live/Qle8Hf1EBKY

Measurement-Induced Phase Transition in a Quantum Ising System. SciVideos, Jan. 29, 2025, https://youtube.com/live/Qle8Hf1EBKY 

          @misc{ scivideos_ICTS:30881,
            doi = {},
            url = {https://youtube.com/live/Qle8Hf1EBKY},
            author = {},
            keywords = {},
            language = {en},
            title = {Measurement-Induced Phase Transition in a Quantum Ising System},
            publisher = {},
            year = {2025},
            month = {jan},
            note = {ICTS:30881 see, \url{https://scivideos.org/index.php/icts-tifr/30881}}
          }
Subinay Dasgupta
Talk numberICTS:30881
Source RepositoryICTS-TIFR
Collection

Abstract

We present a protocol for measurement-induced transition, where at each time-step we evolve a quantum Ising chain under transverse Ising Hamiltonian for time τ, and then make a global measurement with certainty. For system size ≤28, there is a transition in entanglement at some critical value τ = τc. We also calculate survival probability of the initial state and find that some quantity derived from this probability also shows a peak at τc. Using a recurrence relation, one can compute survival probability in our set-up for size upto 1000. It is found that the critical value of τ follows a scaling τc ∝1/√N. Hence, the transition occurs for finite size only. It will be interesting to investigate the size-dependence of critical point in other measurement-induced transitions.