ECE Seminar

Abstract:

Rapid progress in quantum computing technologies is ushering in a new era for quantum many-body physics. Today's noisy, intermediate-scale quantum devices, while still far from fault-tolerant quantum computers, are exceptional laboratory systems, with large many-body Hilbert spaces and unprecedented capabilities for control and measurement. This allows the exploration of quantum dynamics in new, far-from-equilibrium regimes, and motivates new paradigms of phase structure. In this talk I will focus on one such paradigm: entanglement phases in "monitored" systems, whose dynamics include projective measurements alongside unitary operations. I will review the surprising behavior of these systems, focusing on the existence of an entangling phase supported by a dynamically-generated quantum error correcting code. I will then present a new window into this physics based on the idea of space-time duality: a transformation that relates unitary and monitored circuits by exchanging the roles of space and time in the dynamics, which can be implemented on digital quantum simulators through a generalized "quantum teleportation" protocol.

Bio:

Matteo Ippoliti is a postdoctoral fellow at Stanford University. His research lies at the interface of quantum information and condensed matter theory, with a focus on quantum systems out of equilibrium. In 2019 he obtained a PhD in physics from Princeton University, where he worked on problems in theoretical and computational condensed matter under the supervision of Prof. Ravindra Bhatt, and was awarded the Graduate School's Harold W. Dodds Fellowship in 2018-2019. Prior to that, he obtained Bachelor's and Master's degrees (in 2012 and 2014) from Scuola Normale Superiore and the University of Pisa (Italy), where he worked on quantum information theory in Prof. Vittorio Giovannetti’s group.