Mixed-state quantum phases: Renormalization and quantum error correction

S Sang, Y Zou, TH Hsieh - Physical Review X, 2024 - APS
Open system quantum dynamics can generate a variety of long-range entangled mixed
states, yet it has been unclear in what sense they constitute phases of matter. To establish …

Random unitaries in extremely low depth

T Schuster, J Haferkamp, HY Huang - arxiv preprint arxiv:2407.07754, 2024 - arxiv.org
We prove that random quantum circuits on any geometry, including a 1D line, can form
approximate unitary designs over $ n $ qubits in $\log n $ depth. In a similar manner, we …

Measuring nonlocal brane order with error-corrected quantum gas microscopes

J Hur, W Lee, K Kwon, SJ Huh, GY Cho, J Choi - Physical Review X, 2024 - APS
Exotic quantum many-body states, such as Haldane and spin liquid phases, can exhibit
remarkable features like fractional excitations and non-Abelian statistics and offer new …

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 …

Worldsheet patching, 1-form symmetries, and" Landau-star" phase transitions

P Serna, AM Somoza, A Nahum - arxiv preprint arxiv:2403.04025, 2024 - arxiv.org
The analysis of phase transitions of gauge theories has relied heavily on simplifications that
arise at the boundaries of phase diagrams, where certain excitations are forbidden. Taking …

Universal terminal for cloud quantum computing

M Khazali - Scientific Reports, 2024 - nature.com
To bring the quantum computing capacities to the personal edge devices, the optimum
approach is to have simple non-error-corrected personal devices that offload the …

Worldsheet patching, 1-form symmetries, and phase transitions

P Serna, AM Somoza, A Nahum - Physical Review B, 2024 - APS
The analysis of phase transitions of gauge theories has relied heavily on simplifications that
arise at the boundaries of phase diagrams, where certain excitations are forbidden. Taking …

Error-tolerant quantum convolutional neural networks for symmetry-protected topological phases

P Zapletal, NA McMahon, MJ Hartmann - Physical Review Research, 2024 - APS
The analysis of noisy quantum states prepared on current quantum computers is getting
beyond the capabilities of classical computing. Quantum neural networks based on …

Learning topological states from randomized measurements using variational tensor network tomography

Y Teng, R Samajdar, K Van Kirk, F Wilde… - arxiv preprint arxiv …, 2024 - arxiv.org
Learning faithful representations of quantum states is crucial to fully characterizing the
variety of many-body states created on quantum processors. While various tomographic …

Magic class and the convolution group

K Bu, A Jaffe, Z Wei - arxiv preprint arxiv:2402.05780, 2024 - arxiv.org
The classification of many-body quantum states plays a fundamental role in the study of
quantum phases of matter. In this work, we propose an approach to classify quantum states …