PIRSA:20110001 Scientific Series Condensed Matter

DOI10.48660/20110001

Grover, T. (2020). Mixed-state entanglement as a diagnostic for quasiparticles and finite-T topological order. Perimeter Institute. https://pirsa.org/20110001

Grover, Tarun. Mixed-state entanglement as a diagnostic for quasiparticles and finite-T topological order. Perimeter Institute, Nov. 09, 2020, https://pirsa.org/20110001 

@misc{ pirsa_PIRSA:20110001,
  doi = {10.48660/20110001},
  url = {https://pirsa.org/20110001},
  author = {Grover, Tarun},
  keywords = {Condensed Matter},
  language = {en},
  title = {Mixed-state entanglement as a diagnostic for quasiparticles and finite-T topological order},
  publisher = {Perimeter Institute},
  year = {2020},
  month = {nov},
  note = {PIRSA:20110001 see, \url{https://pirsa.org}}
}

Abstract

Quantum entanglement of pure states has led to new insights into a wide variety of topics. Entanglement of mixed states is however less well understood. In this talk I will focus on a few themes where mixed-state entanglement leads to new insights that are difficult to obtain otherwise. I will mainly focus on two topics: (i) Characterizing finite-temperature topological order (ii) Detecting presence/absence of quasiparticles. Time permitting, I will also discuss a relation between mixed-state entanglement and information obtained from projective measurements, and its application to characterizing multi-component systems, such as quantum disentangled liquids and Kondo lattice systems.

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