Tensor-network-based variational Monte Carlo approach to the non-equilibrium steady state of open quantum systems

Dawid A. Hryniuk and Marzena H. Szymańska,

Quantum 8, 1475 (2024).

We introduce a novel method of efficiently simulating the non-equilibrium steady state of large many-body open quantum systems with highly non-local interactions, based on a variational Mont…

Kazuki Sakamoto, Hayata Morisaki, Junichi Haruna, Etsuko Itou, Keisuke Fujii, and Kosuke Mitarai,

Quantum 8, 1474 (2024).

The Schwinger model is one of the simplest gauge theories. It is known that a topological term of the model leads to the infamous sign problem in the classical Monte Carlo method. In contras…

Stefano Baiguera, Shira Chapman, Giuseppe Policastro, and Tal Schwartzman,

Quantum 8, 1472 (2024).

Nielsen's approach to quantum state complexity relates the minimal number of quantum gates required to prepare a state to the length of geodesics computed with a certain norm on the manifold…

Xinyi Chen, Elad Hazan, Tongyang Li, Zhou Lu, Xinzhao Wang, and Rui Yang,

Quantum 8, 1471 (2024).

The problem of efficient quantum state learning, also called shadow tomography, aims to comprehend an unknown $d$-dimensional quantum state through POVMs. Yet, these states are rarely static;…

Benjamin D. M. Jones, Noah Linden, and Paul Skrzypczyk,

Quantum 8, 1470 (2024).

We consider models of quantum computation that involve operations performed on some fixed resourceful quantum state. Examples that fit this paradigm include magic state injection and measure…

Monica Conte, Vinicius Zampronio, Malte Röntgen, and Cristiane Morais Smith,

Quantum 8, 1469 (2024).

Here, we investigate the fractal-lattice Hubbard model using various numerical methods: exact diagonalization, the self-consistent diagonalization of a (mean-field) Hartree-Fock Hamiltonian…

Yinzi Xiao, Basudha Srivastava, and Mats Granath,

Quantum 8, 1468 (2024).

The code-capacity threshold of a scalable quantum error correcting stabilizer code can be expressed as a thermodynamic phase transition of a corresponding random-bond Ising model. Here we st…

Tian-Gang Zhou and Pengfei Zhang,

Quantum 8, 1467 (2024).

Classical shadow tomography serves as a potent tool for extracting numerous properties from quantum many-body systems with minimal measurements. Nevertheless, prevailing methods yielding opt…

A. Parra-Rodriguez and I. L. Egusquiza,

Quantum 8, 1466 (2024).

In lumped-element electrical circuit theory, the problem of solving Maxwell's equations in the presence of media is reduced to two sets of equations, the constitutive equations encapsulating…

Sadman Shanto, Andre Kuo, Clark Miyamoto, Haimeng Zhang, Vivek Maurya, Evangelos Vlachos, Malida Hecht, Chung Wa Shum, and Eli Levenson-Falk,

Quantum 8, 1465 (2024).

We present an open-source database of superconducting quantum device designs that may be used as the starting point for customized devices. Each design can be generated programmatically usin…

Jacopo Surace,

Quantum 8, 1464 (2024).

What would be the consequences if there were fundamental limits to our ability to experimentally explore the world? In this work we seriously consider this question. We assume the existence…

Kaito Wada, Kazuma Fukuchi, and Naoki Yamamoto,

Quantum 8, 1463 (2024).

Quantum-enhanced (i.e., higher performance by quantum effects than any classical methods) mean value estimation of observables is a fundamental task in various quantum technologies; in parti…

Brian J. J. Khor, D. M. Kürkçüoglu, T. J. Hobbs, G. N. Perdue, and Israel Klich,

Quantum 8, 1462 (2024).

In this work, we explore the interplay of confinement, string breaking and entanglement asymmetry on a 1D quantum Ising chain. We consider the evolution of an initial domain wall and show th…

Hiroki Hamaguchi, Kou Hamada, and Nobuyuki Yoshioka,

Quantum 8, 1461 (2024).

Nonstabilizerness, or magic, is an essential quantum resource for performing universal quantum computation. Specifically, Robustness of Magic (RoM) characterizes the usefulness of a given qu…