Random quantum circuits
Quantum circuits—built from local unitary gates and local measurements—are a new
playground for quantum many-body physics and a tractable setting to explore universal …
playground for quantum many-body physics and a tractable setting to explore universal …
Developments in the tensor network—from statistical mechanics to quantum entanglement
Tensor networks (TNs) have become one of the most essential building blocks for various
fields of theoretical physics such as condensed matter theory, statistical mechanics …
fields of theoretical physics such as condensed matter theory, statistical mechanics …
Measurement-induced entanglement phase transition on a superconducting quantum processor with mid-circuit readout
Quantum many-body systems subjected to unitary evolution with the addition of interspersed
measurements exhibit a variety of dynamical phases that do not occur under pure unitary …
measurements exhibit a variety of dynamical phases that do not occur under pure unitary …
Theory of the phase transition in random unitary circuits with measurements
We present a theory of the entanglement transition tuned by measurement strength in qudit
chains evolved by random unitary circuits and subject to either weak or random projective …
chains evolved by random unitary circuits and subject to either weak or random projective …
Measurement-induced criticality in random quantum circuits
We investigate the critical behavior of the entanglement transition induced by projective
measurements in (Haar) random unitary quantum circuits. Using a replica approach, we …
measurements in (Haar) random unitary quantum circuits. Using a replica approach, we …
Measurement-induced entanglement and teleportation on a noisy quantum processor
Nature, 2023 - nature.com
Measurement has a special role in quantum theory: by collapsing the wavefunction, it can
enable phenomena such as teleportation and thereby alter the 'arrow of time'that constrains …
enable phenomena such as teleportation and thereby alter the 'arrow of time'that constrains …
Long-range entanglement from measuring symmetry-protected topological phases
A fundamental distinction between many-body quantum states are those with short-and long-
range entanglement (SRE and LRE). The latter cannot be created by finite-depth circuits …
range entanglement (SRE and LRE). The latter cannot be created by finite-depth circuits …
Measurement and entanglement phase transitions in all-to-all quantum circuits, on quantum trees, and in Landau-Ginsburg theory
A quantum many-body system whose dynamics includes local measurements at a nonzero
rate can be in distinct dynamical phases, with differing entanglement properties. We …
rate can be in distinct dynamical phases, with differing entanglement properties. We …
Critical properties of the measurement-induced transition in random quantum circuits
We numerically study the measurement-driven quantum phase transition of Haar-random
quantum circuits in 1+ 1 dimensions. By analyzing the tripartite mutual information we are …
quantum circuits in 1+ 1 dimensions. By analyzing the tripartite mutual information we are …
Measurement-induced phase transitions in the dynamics of entanglement
We define dynamical universality classes for many-body systems whose unitary evolution is
punctuated by projective measurements. In cases where such measurements occur …
punctuated by projective measurements. In cases where such measurements occur …