ICTS:30560

Video URL

Many-body Localization: Quantum coherence, single-particle excitations and nature of the transition

Many-body Localization: Quantum coherence, single-particle excitations and nature of the transition

(2024). Many-body Localization: Quantum coherence, single-particle excitations and nature of the transition. SciVideos. https://youtu.be/s3RUpFWrCbQ

Many-body Localization: Quantum coherence, single-particle excitations and nature of the transition. SciVideos, Dec. 18, 2024, https://youtu.be/s3RUpFWrCbQ 

          @misc{ scivideos_ICTS:30560,
            doi = {},
            url = {https://youtu.be/s3RUpFWrCbQ},
            author = {},
            keywords = {},
            language = {en},
            title = {Many-body Localization: Quantum coherence, single-particle excitations and nature of the transition},
            publisher = {},
            year = {2024},
            month = {dec},
            note = {ICTS:30560 see, \url{https://scivideos.org/index.php/icts-tifr/30560}}
          }
Arti Garg
Talk numberICTS:30560
Source RepositoryICTS-TIFR
Collection

Abstract

Many-body localization is a fascinating phenomenon observed in strongly disordered interacting quantum systems. In this talk, I will describe some of our recent works focusing on quantum coherence and single particle excitations across the MBL transition. I will discuss exact relations between various norms of coherence and measure of localization for any generic quantum system and discuss it for a standard model of MBL. Interestingly, though coherence of the full system vanishes in the MBL phase, subsystem coherence increases as the disorder strength increases which can have strong application potential in superconducting qubit arrays and other quantum devices where controlling coherence is a big challenge. On a completely different note, I will discuss single-particle excitations across the MBL transition in systems with random and quasiperiodic potentials and demonstrate that they belong to two different universality classes.