Measurement as a shortcut to long-range entangled quantum matter

TC Lu, LA Lessa, IH Kim, TH Hsieh - PRX Quantum, 2022 - APS
The preparation of long-range entangled states using unitary circuits is limited by Lieb-
Robinson bounds, but circuits with projective measurements and feedback (“adaptive …

Logical blocks for fault-tolerant topological quantum computation

H Bombin, C Dawson, RV Mishmash, N Nickerson… - PRX Quantum, 2023 - APS
Logical gates constitute the building blocks of fault-tolerant quantum computation. While
quantum error-corrected memories have been extensively studied in the literature, explicit …

Holographic measurement and bulk teleportation

S Antonini, G Bentsen, CJ Cao, J Harper… - Journal of High Energy …, 2022 - Springer
A bstract Holography has taught us that spacetime is emergent and its properties depend on
the entanglement structure of the dual theory. In this paper, we describe how changes in the …

Crystalline quantum circuits

GM Sommers, DA Huse, MJ Gullans - PRX Quantum, 2023 - APS
Random quantum circuits continue to inspire a wide range of applications in quantum
information science and many-body quantum physics, while remaining analytically tractable …

Quantum Lego expansion pack: Enumerators from tensor networks

CJ Cao, MJ Gullans, B Lackey, Z Wang - PRX Quantum, 2024 - APS
We provide the first tensor-network method for computing quantum weight enumerator
polynomials in the most general form. If a quantum code has a known tensor-network …

Simultaneous discovery of quantum error correction codes and encoders with a noise-aware reinforcement learning agent

J Olle, R Zen, M Puviani, F Marquardt - npj Quantum Information, 2024 - nature.com
In the ongoing race towards experimental implementations of quantum error correction
(QEC), finding ways to automatically discover codes and encoding strategies tailored to the …

Constant-depth preparation of matrix product states with adaptive quantum circuits

KC Smith, A Khan, BK Clark, SM Girvin… - arXiv preprint arXiv …, 2024 - arxiv.org
Adaptive quantum circuits, which combine local unitary gates, midcircuit measurements, and
feedforward operations, have recently emerged as a promising avenue for efficient state …

Extracting topological orders of generalized Pauli stabilizer codes in two dimensions

Z Liang, Y Xu, JT Iosue, YA Chen - PRX Quantum, 2024 - APS
In this paper, we introduce an algorithm for extracting topological data from translation
invariant generalized Pauli stabilizer codes in two-dimensional systems, focusing on the …

Far from perfect: Quantum error correction with (hyperinvariant) evenbly codes

M Steinberg, J Fan, RJ Harris, D Elkouss, S Feld… - arXiv preprint arXiv …, 2024 - arxiv.org
We introduce a new class of qubit codes that we call Evenbly codes, building on a previous
proposal of hyperinvariant tensor networks. Its tensor network description consists of local …

Resource Optimization for Quantum Dynamics with Tensor Networks: Quantum and Classical Algorithms

A Dwivedi, MA Lopez-Ruiz… - The Journal of Physical …, 2024 - ACS Publications
The exponential scaling of the quantum degrees of freedom with the size of the system is
one of the biggest challenges in computational chemistry and particularly in quantum …