Matrix product states and projected entangled pair states: Concepts, symmetries, theorems
The theory of entanglement provides a fundamentally new language for describing
interactions and correlations in many-body systems. Its vocabulary consists of qubits and …
interactions and correlations in many-body systems. Its vocabulary consists of qubits and …
Unconventional topological mixed-state transition and critical phase induced by self-dual coherent errors
YH Chen, T Grover - Physical Review B, 2024 - APS
A topological phase can undergo a phase transition driven by anyon condensation. A
potential obstruction to such a mechanism could arise if there exists a symmetry between …
potential obstruction to such a mechanism could arise if there exists a symmetry between …
Anyon condensation and the color code
MS Kesselring, JC Magdalena de la Fuente… - PRX Quantum, 2024 - APS
The manipulation of topologically ordered phases of matter to encode and process quantum
information forms the cornerstone of many approaches to fault-tolerant quantum computing …
information forms the cornerstone of many approaches to fault-tolerant quantum computing …
Pauli stabilizer models of twisted quantum doubles
We construct a Pauli stabilizer model for every two-dimensional Abelian topological order
that admits a gapped boundary. Our primary example is a Pauli stabilizer model on four …
that admits a gapped boundary. Our primary example is a Pauli stabilizer model on four …
Matrix product operator symmetries and intertwiners in string-nets with domain walls
We provide a description of virtual non-local matrix product operator (MPO) symmetries in
projected entangled pair state (PEPS) representations of string-net models. Given such a …
projected entangled pair state (PEPS) representations of string-net models. Given such a …
[HTML][HTML] Subsystem symmetries, quantum cellular automata, and computational phases of quantum matter
Quantum phases of matter are resources for notions of quantum computation. In this work,
we establish a new link between concepts of quantum information theory and condensed …
we establish a new link between concepts of quantum information theory and condensed …
Tensor network formulation of symmetry protected topological phases in mixed states
We define and classify symmetry-protected topological (SPT) phases in mixed states based
on the tensor network formulation of the density matrix. In one dimension, we introduce …
on the tensor network formulation of the density matrix. In one dimension, we introduce …
Symmetry protected topological phases of mixed states in the doubled space
The interplay of symmetry and topology in quantum many-body mixed states has recently
garnered significant interest. In a phenomenon not seen in pure states, mixed states can …
garnered significant interest. In a phenomenon not seen in pure states, mixed states can …
Entanglement entropy from tensor network states for stabilizer codes
In this paper, we present the construction of tensor network states (TNS) for some of the
degenerate ground states of three-dimensional (3D) stabilizer codes. We then use the TNS …
degenerate ground states of three-dimensional (3D) stabilizer codes. We then use the TNS …
Trimer states with topological order in Rydberg atom arrays
Trimers are defined as two adjacent edges on a graph. We study the quantum states
obtained as equal-weight superpositions of all trimer coverings of a lattice, with the …
obtained as equal-weight superpositions of all trimer coverings of a lattice, with the …