Results 11 to 20 of about 4,643 (306)

Control of superexchange interactions with DC electric fields

Physical Review Research, 2021
We discuss DC electric-field controls of superexchange interactions. We first present generic results about antiferromagnetic and ferromagnetic superexchange interactions valid in a broad class of Mott insulators, where we also estimate typical field ...
Shunsuke C. Furuya, Kazuaki Takasan, Masahiro Sato   +2 more
doaj   +1 more source

Learning lattice quantum field theories with equivariant continuous flows

SciPost Physics, 2023
We propose a novel machine learning method for sampling from the high-dimensional probability distributions of Lattice Field Theories, which is based on a single neural ODE layer and incorporates the full symmetries of the problem. We test our model on the \phi^4
Gerdes, M., de Haan, P., Rainone, Corrado, Bondesan, R., Cheng, M.C.N.   +4 more
openaire   +5 more sources

From Spinon Band Topology to the Symmetry Quantum Numbers of Monopoles in Dirac Spin Liquids

Physical Review X, 2020
The interplay of symmetry and topology has been at the forefront of recent progress in quantum matter. Here, we uncover an unexpected connection between band topology and the description of competing orders in a quantum magnet. Specifically, we show that
Xue-Yang Song, Yin-Chen He, Ashvin Vishwanath, Chong Wang   +3 more
doaj   +1 more source

Strongly correlated and topological states in [111] grown transition metal oxide thin films and heterostructures

APL Materials, 2020
We highlight recent advances in the theory, materials fabrication, and experimental characterization of strongly correlated and topological states in [111] oriented transition metal oxide thin films and heterostructures, which are notoriously difficult ...
Jak Chakhalian, Xiaoran Liu, Gregory A. Fiete   +2 more
doaj   +1 more source

Quantum mean estimation for lattice field theory

Physical Review D, 2023
We demonstrate the quantum mean estimation algorithm on Euclidean lattice field theories. This shows a quadratic advantage over Monte Carlo methods which persists even in presence of a sign problem, and is insensitive to critical slowing down. The algorithm is used to compute $π$ with and without a sign problem, a toy U(1) gauge theory model, and the ...
Erik J. Gustafson, Henry Lamm, Judah Unmuth-Yockey   +2 more
openaire   +2 more sources

Interpreting the Modal Kochen-Specker Theorem: Possibility and Many Worlds in Quantum Mechanics [PDF]

, 2013
In this paper we attempt to physically interpret the Modal Kochen-Specker (MKS) theorem. In order to do so, we analyze the features of the possible properties about quantum systems arising from the elements in an orthomodular lattice and distinguish the ...
FREYTES, HECTOR CARLOS, Freytes Solari, Hector Carlos, G. Domenech, Domenech, Graciela, Graciela Domenech, de Ronde, Christian, Hector Freytes, Domenech G., H. Freytes, Christian de Ronde, De Ronde C, C. De Ronde, Freytes, Hector   +12 more
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Quantum Monte Carlo detection of SU(2) symmetry breaking in the participation entropies of line subsystems

SciPost Physics, 2017
Using quantum Monte Carlo simulations, we compute the participation (Shannon-R\'enyi) entropies for groundstate wave functions of Heisenberg antiferromagnets for one-dimensional (line) subsystems of length $L$ embedded in two-dimensional ($L\times L$)
David J. Luitz, Nicolas Laflorencie
doaj   +1 more source

Review on Quantum Computing for Lattice Field Theory

Proceedings of The 39th International Symposium on Lattice Field Theory — PoS(LATTICE2022), 2023
In these proceedings, we review recent advances in applying quantum computing to lattice field theory. Quantum computing offers the prospect to simulate lattice field theories in parameter regimes that are largely inaccessible with the conventional Monte Carlo approach, such as the sign-problem afflicted regimes of finite baryon density, topological ...
Funcke, Lena, Hartung, Tobias, Jansen, Karl, Kühn, Stefan   +3 more
openaire   +4 more sources

Creating a joint secret key in reducing homomorphic encryption for a class of congruent systems

Безопасность информационных технологий, 2021
Today special attention is paid to homomorphic encryption in the field of information security. Systems of homomorphic encryption represent such systems that allow arbitrary operations over ciphertext that are homomorphic to algebraic operations with ...
Victor Y. Kadykov, Alla B. Levina
doaj   +1 more source

Planar Photonic Crystal Nanocavities with Active Quantum Nanostructures [PDF]

, 2004
Extreme photon localization is applicable to constructing building blocks in photonic systems and quantum information systems. A finding fact that photon localization in small space modifies the radiation process was reported in 1944 by Purcell, and ...
Yoshie, Tomoyuki
core   +1 more source