Entanglement dynamics: Nishimori physics and monitored Kitaev models

by Prof. Simon Trebst (University of Cologne)

Monday 20 Jan 2025, 11:00 → 12:00 Europe/Zurich

PSI Auditorium (WHGA/001)

The preparation of quantum states across many qubits is an essential building block to unlock the full potential of quantum computers. However, a key challenge is to realize efficient preparation protocols which are stable to noise and gate imperfections. In this talk, I will discuss how monitored quantum circuits allow to dynamically create, actively manipulate and decode entanglement structures. A principal example will be the preparation of macroscopic cat states, their stability and the unexpected connections to Nishimori physics that play out in multiple ways. As a second example I will discuss how deep quantum circuits can be employed to explore monitored Kitaev spin liquid physics.