4 papers
Shannon entropy of the measurement record at measurement-dominated criticality and RG flow: A c-theorem for effective central charge and a g-theorem for effective boundary entropy
Rushikesh A. Patil, Andreas W. W. Ludwig
We present two theorems demonstrating non-perturbatively the decrease under relevant renormalization group (RG) flow of two quantities, and charac…
Flow to Nishimori universality in weakly monitored quantum circuits with qubit loss
Malte Pütz, Romain Vasseur, Andreas W. W. Ludwig +2
In circuit-based quantum state preparation, qubit loss and coherent errors are circuit imperfections that imperil the formation of long-range entanglement beyond a certain threshol…
Decoherence-induced self-dual criticality in topological states of matter
Qingyuan Wang, Romain Vasseur, Simon Trebst +2
Quantum measurements performed on a subsystem of a quantum many-body state can generate entanglement for its remaining constituents. The whole system including the measurement reco…
Highly complex novel critical behavior from the intrinsic randomness of quantum mechanical measurements on critical ground states -- a controlled renormalization group analysis
Rushikesh A. Patil, Andreas W. W. Ludwig
We consider the effects of weak measurements on the quantum critical ground state of the one-dimensional (a) tricritical and (b) critical quantum Ising model, by measuring in (a) t…