(VIRTUAL) Talk 63 - Measurement-induced phase transition in teleportation and wormholes

          @misc{ scivideos_PIRSA:23080010,
            doi = {10.48660/23080010},
            url = {https://pirsa.org/23080010},
            author = {Milekhin, Alexey},
            keywords = {Quantum Fields and Strings, Quantum Information, Quantum Foundations},
            language = {en},
            title = {(VIRTUAL) Talk 63 - Measurement-induced phase transition in teleportation and wormholes},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2023},
            month = {aug},
            note = {PIRSA:23080010 see, \url{https://scivideos.org/index.php/pirsa/23080010}}
          }
          

Abstract

We demonstrate that some quantum teleportation protocols exhibit measurement induced phase transitions in Sachdev-Ye-Kitaev model. Namely, Kitaev-Yoshida and Gao-Jafferis-Wall protocols have a phase transition if we apply them at a large projection rate or at a large coupling rate respectively. It is well-known that at small rates they allow teleportation to happen only within a small time-window. We show that at large rates, the system goes into a new steady state, where the teleportation can be performed at any moment. In dual Jackiw-Teitelboim gravity these phase transitions correspond to the formation of an eternal traversable wormhole. In the Kitaev-Yoshida case this novel type of wormhole is supported by continuous projections. Based on https://arxiv.org/abs/2210.03083