6 papers · 1 filter
Magnetic domains stabilized by symmetry-protected zero modes
Pavel Kos, Dominik S. Wild, Kristian Knakkergaard Nielsen
Understanding mechanisms for the breakdown of thermalization in closed quantum systems is a central problem in quantum many-body physics. We demonstrate strong non-ergodic behavior…
Average-computation benchmarking for local expectation values in digital quantum devices
Flavio Baccari, Pavel Kos, Georgios Styliaris
As quantum devices progress towards a quantum advantage regime, they become harder to benchmark. A particularly relevant challenge is to assess the quality of the whole computation…
Mixed state deep thermalization
Xie-Hang Yu, Wen Wei Ho, Pavel Kos
We introduce the notion of the mixed state projected ensemble (MSPE), a collection of mixed states describing a local region of a quantum many-body system, conditioned upon measure…
Magic Resources of the Heisenberg Picture
Neil Dowling, Pavel Kos, Xhek Turkeshi
We study a non-stabilizerness resource theory for operators, which is dual to that describing states. We identify that the stabilizer Rényi entropy analog in operator space is a g…
Dual-isometric Projected Entangled Pair States
Xie-Hang Yu, J. Ignacio Cirac, Pavel Kos +1
Efficient characterization of higher dimensional many-body physical states presents significant challenges. In this paper, we propose a new class of Project Entangled Pair State (P…
Exact solution of long-range stabilizer Rényi entropy in the dual-unitary XXZ model
Jordi Arnau Montañà López, Pavel Kos
Quantum systems can not be efficiently simulated classically due to the presence of entanglement and nonstabilizerness, also known as quantum magic. Here we study the generation of…