A measured approach toward long-range entangled matter


Hsieh, T. (2023). A measured approach toward long-range entangled matter. Perimeter Institute. https://pirsa.org/23110055


Hsieh, Timothy. A measured approach toward long-range entangled matter. Perimeter Institute, Nov. 08, 2023, https://pirsa.org/23110055


          @misc{ pirsa_PIRSA:23110055,
            doi = {10.48660/23110055},
            url = {https://pirsa.org/23110055},
            author = {Hsieh, Timothy},
            keywords = {Other},
            language = {en},
            title = { A measured approach toward long-range entangled matter},
            publisher = {Perimeter Institute},
            year = {2023},
            month = {nov},
            note = {PIRSA:23110055 see, \url{https://pirsa.org}}

Timothy Hsieh Perimeter Institute for Theoretical Physics

Talk Type Scientific Series


Long-range entangled quantum matter encompasses a wealth of fascinating phenomena including fractionalization and criticality.  I will show how quantum dynamics involving measurements can both enable new kinds of long-range entangled states and facilitate their realization on quantum simulators.  In the first part, I will illustrate how competing measurements along with unitary time evolution can give rise to distinct universality classes of non-equilibrium criticality.  In the second part, I will show how measurements and unitary evolution conditioned on the measurement outcomes (“adaptive quantum circuits”) enable efficient preparation of long-range entangled matter.  Finally, I will demonstrate how environmental measurement (decoherence) can remarkably enrich quantum critical pure states, giving rise to renormalization group flows between quantum channels with important implications on the entanglement structure of the resulting critical mixed states.  


Zoom link https://pitp.zoom.us/j/97087115629?pwd=NHdlWG9oM0xHUDIzU05sUWRKdWlFdz09