Article
Materials Science, Multidisciplinary
Shao-Hen Chiew, Jiangbin Gong, Leong-Chuan Kwek, Chee-Kong Lee
Summary: This article investigates the stability and final localization properties of a disordered Heisenberg spin chain coupled to a finite environment. It finds that within smaller system sizes, a strongly localized system can retain remnant information on its initial state at long times, despite coupling to a finite ergodic environment. However, strong dependencies on the initial state and coupling strength are observed in a ladder configuration, which can lead to either the loss or retention of information.
Article
Materials Science, Multidisciplinary
Christian Eidecker-Dunkel, Peter Reimann
Summary: Allosterism traditionally refers to local changes in an extended object, but this study shows that such effects can also occur in simple quantum many-body systems, such as a spin chain. Introducing an impurity at one end of the chain leads to significant changes in the observable behavior near the other end, while the region in between remains largely unaffected.
Article
Astronomy & Astrophysics
Matteo Baggioli
Summary: This study explores the collision of shear diffusion mode and nonhydrodynamic relaxation mode in liquids and plasmas, leading to the formation of propagating shear waves known as k-gap, and explains the low-frequency elastic behavior in confined liquids. Additionally, it shows that critical points in complex space, such as the k-gap, determine the convergence radius of linear hydrodynamics. Furthermore, the study reveals that the convergence radius in real liquids is influenced by temperature and electromagnetic interactions, with the Wigner-Seitz radius serving as a natural microscopic bound.
Article
Materials Science, Multidisciplinary
Jun Xie, Jun Zhong, Weidong Sheng
Summary: The electronic structure of phosphorene atomic chains embedded in different dielectric environments is theoretically studied using a configuration interaction method. It is found that, in addition to the expected scaling law of L², the quasiparticle shift and exciton binding energies follow certain scaling laws, with the former converging to a value independent of the dielectric environment as the length of the atomic chains increases.
Article
Construction & Building Technology
Pedro Coelho, Ana Silva, Jorge de Brito
Summary: This study proposes a methodology for predicting the service life of wood flooring systems based on a fieldwork survey of 96 indoor wood floorings in Portugal. The research highlights the significant impact of protection type, wood type, and floor type on the service life of wood floorings.
Article
Mathematics, Interdisciplinary Applications
Agnieszka Czaplicka, Christos Charalambous, Raul Toral, Maxi San Miguel
Summary: This study explores the dynamics of the voter model in the presence of confidence and bias. Analytical and numerical methods are used to investigate the impact of biased voters and their connectivity on the time and probability of achieving consensus. The findings suggest that the time to consensus increases with the fraction of biased voters and the degree of bias. Furthermore, different strategies for generating random network topologies can significantly affect the efficiency of reaching consensus and the influence of biased groups.
CHAOS SOLITONS & FRACTALS
(2022)
Article
Optics
Federico Roccati, Salvatore Lorenzo, Giuseppe Calajo, G. Massimo Palma, Angelo Carollo, Francesco Ciccarello
Summary: Photon-mediated interaction between quantum emitters is an emerging field in quantum optics. Non-Hermitian physics, particularly in photonic lattices, challenges conventional theories and allows access to new physics. The study reveals that structured losses in the field can lead to exotic emission properties. Photons can mediate dissipative, fully non-reciprocal interactions between emitters, with the range depending on the loss rate.
Article
Physics, Fluids & Plasmas
Sheng-Chen Liu, Lin Cheng, Gui-Zhong Yao, Ying-Xiang Wang, Liang-You Peng
Summary: Almost every quantum circuit in current stage relies on two-qubit gates, which are crucial for quantum computing in any platform. In trapped-ion systems, entangling gates based on Molmer-Sorensen schemes are widely used, utilizing the collective motional modes of ions and laser-controlled internal states as qubits. The key to achieving high-fidelity and robust gates is minimizing entanglement between qubits and motional modes under various sources of errors. In this work, an efficient numerical method is proposed to search for high-quality solutions for phase-modulated pulses, which solves the problem through a combination of linear algebra and quadratic equations. The method demonstrates effectiveness up to 60 ions and overcomes convergence issues, meeting the gate design needs in current trapped-ion experiments.
Article
Physics, Multidisciplinary
Durga Bhaktavatsala Rao Dasari
Summary: We use exact calculations to analyze the thermodynamical effects of depolarizing a zero-temperature quantum spin-bath with a quantum probe coupled to an infinite temperature bath. The induced correlations in the bath during the depolarizing process prevent the bath's entropy from increasing to its maximum limit, but the energy deposited in the bath can be extracted completely in a finite time. We investigate these findings using a solvable central spin model, demonstrating that destroying unwanted correlations enhances the rate of energy extraction and entropy towards their limiting values. These studies have implications for quantum battery research, particularly in understanding battery performance during charging and discharging processes.
Article
Quantum Science & Technology
Lionel Tenemeza Kenfack, William Degaulle Waladi Gueagni, Martin Tchoffo, Lukong Cornelius Fai
Summary: The estimation of temperature in a thermal XY spin-chain can be improved by adjusting the coupling strength between the probe and the bath as well as the bath spins. Optimal precision is achieved when these coupling strengths are equal, allowing for a long-time interaction between the probe and the bath.
QUANTUM INFORMATION PROCESSING
(2021)
Article
Physics, Condensed Matter
Elisabeth Wybo, Michael Knap, Frank Pollmann
Summary: The dynamics of entanglement in a Wannier-Stark many-body localized system coupled to a dephasing environment is investigated, using the third Renyi negativity as an accessible entanglement proxy. This measure captures the characteristic logarithmic growth of interacting localized phases up to intermediate time-scales, providing a tool to distinguish Wannier-Stark MBL from noninteracting Wannier-Stark localization and quantify quantum correlations in mixed-state dynamics.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Dries Sels
Summary: This Letter provides numerical evidence for the dynamics of disordered spin chains weakly coupled to a Markovian bath, showing that the critical disorder for stability to quantum avalanches drifts considerably with system size, with no evidence of saturation in the studied regime.
Article
Physics, Multidisciplinary
B. S. Revathy, Victor Mukherjee, Uma Divakaran
Summary: In this study, a bath-engineered quantum engine (BEQE) is proposed to enhance the performance of finite-time quantum engines operating close to quantum phase transitions. By using the Kibble-Zurek mechanism and critical scaling laws, a protocol is formulated. In the case of free fermionic systems, BEQE enables finite-time engines to outperform engines operating in the presence of shortcuts to adiabaticity.
Article
Mechanics
Filiberto Ares, Jose G. Esteve, Fernando Falceto
Summary: In this paper, the localized states of a generic quadratic fermionic chain with finite-range couplings and an inhomogeneity in the hopping are studied. The authors investigate the behavior of zero-energy modes in the presence of a defect and their connection to the topological phases of the system. They propose an index to characterize the different phases and analyze the robustness of the connections between the bands. The pumping of states between bands is shown to create particle-hole pairs in the bulk.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Materials Science, Multidisciplinary
Saptarshi Majumdar, Laura Foini, Thierry Giamarchi, Alberto Rosso
Summary: We study an XXZ spin chain coupled to an ohmic bath of harmonic oscillators at zero temperature. Two phases, separated by a Kosterlitz-Thouless transition, are found: a Luttinger liquid phase with finite spin stiffness at low coupling and a dissipative phase with vanishing spin stiffness at high coupling. The transport properties are also affected, with the Luttinger liquid phase being a perfect conductor and the dissipative phase showing finite resistivity. The effect of the bath can be interpreted as annealed disorder-inducing signatures of localization.
Article
Physics, Mathematical
Cedric Bernardin, Francois Huveneers, Stefano Olla
COMMUNICATIONS IN MATHEMATICAL PHYSICS
(2019)
Review
Astronomy & Astrophysics
Wojciech De Roeck, Francois Huveneers
COMPTES RENDUS PHYSIQUE
(2019)
Article
Physics, Mathematical
Francois Huveneers, Elias Theil
JOURNAL OF STATISTICAL PHYSICS
(2019)
Article
Physics, Mathematical
Wojciech De Roeck, Francois Huveneers, Stefano Olla
JOURNAL OF STATISTICAL PHYSICS
(2020)
Article
Physics, Multidisciplinary
Kevin Wang, Francesco Piazza, David J. Luitz
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Multidisciplinary
David J. Luitz, Roderich Moessner, S. L. Sondhi, Vedika Khemani
Article
Physics, Multidisciplinary
Imre Hagymasi, Robin Schafer, Roderich Moessner, David J. Luitz
Summary: The study reveals a robust spontaneous inversion symmetry breaking in the S = 1/2 pyrochlore Heisenberg antiferromagnet, and suggests a scenario where a finite-temperature spin liquid regime transitions to a symmetry-broken state at low temperatures. The ground-state energy calculation and cluster size analysis provide insights into the properties of the quantum spin liquid candidate.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Robin Schaefer, Jan C. Budich, David J. Luitz
Summary: Investigated the influence of symmetry preserving interaction between fermions on exceptional points. Found that exceptional points are stable in the presence of the interaction and form characteristic exceptional fans. Additionally, the interaction can also create new exceptional points.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Imre Hagymasi, Robin Schaefer, Roderich Moessner, David J. Luitz
Summary: This study focuses on the investigation of the pyrochlore Heisenberg antiferromagnet in a magnetic field, revealing interesting magnetic behaviors such as a finite triplet gap and a stable 1/2 magnetization plateau.
Article
Materials Science, Multidisciplinary
Jimin L. Li, Dominic C. Rose, Juan P. Garrahan, David J. Luitz
Summary: This study investigates the effects of strong dissipation in quantum systems with a notion of locality, revealing the emergence of a manifold of metastable states due to variations in the dissipation strength. The findings are confirmed through a perturbative treatment using a simple model involving good and bad qubits with reduced dissipation.
Article
Physics, Multidisciplinary
Maurits S. J. Tepaske, David J. Luitz
Summary: Tensor network states are considered good representations of quantum many-body wave functions, but their utility in higher dimensions is limited by the difficulty of contracting the network. A method for time evolution of three-dimensional isometric tensor networks is introduced here, simplifying contraction through a special canonical form and allowing for accurate representation of ground states in the transverse field Ising model.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Oscar Emil Sommer, Francesco Piazza, David J. Luitz
Summary: Current noisy quantum computers are ideal platforms for simulating quantum many-body dynamics in generic open systems. Using the IBM Quantum Computer, the experimental verification of the theoretical prediction regarding the emergent hierarchy of relaxation timescales was achieved. By leveraging the intrinsic dissipation of the machine responsible for gate errors, a quantum simulation of generic local dissipative interactions was successfully implemented.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Physics, Multidisciplinary
Francois Huveneers, Jani Lukkarinen
PHYSICAL REVIEW RESEARCH
(2020)
Article
Materials Science, Multidisciplinary
David J. Luitz, Yevgeny Bar Lev
Article
Materials Science, Multidisciplinary
Robin Schaefer, Imre Hagymasi, Roderich Moessner, David J. Luitz