Search Results - "Knolle, Johannes"
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Confinement and entanglement dynamics on a digital quantum computer
Published in Scientific reports (02-06-2021)“…Confinement describes the phenomenon when the attraction between two particles grows with their distance, most prominently found in quantum chromodynamics…”
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Higher-order and fractional discrete time crystals in clean long-range interacting systems
Published in Nature communications (20-04-2021)“…Discrete time crystals are periodically driven systems characterized by a response with periodicity n T , with T the period of the drive and n > 1. Typically,…”
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Bistability and time crystals in long-ranged directed percolation
Published in Nature communications (16-02-2021)“…Stochastic processes govern the time evolution of a huge variety of realistic systems throughout the sciences. A minimal description of noisy many-particle…”
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4
Quantum Oscillations without a Fermi Surface and the Anomalous de Haas-van Alphen Effect
Published in Physical review letters (02-10-2015)“…The de Haas-van Alphen effect (dHvAE), describing oscillations of the magnetization as a function of magnetic field, is commonly assumed to be a definite sign…”
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5
Topological magnon amplification
Published in Nature communications (02-09-2019)“…Topology is quickly becoming a cornerstone in our understanding of electronic systems. Like their electronic counterparts, bosonic systems can exhibit a…”
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Simulating quantum many-body dynamics on a current digital quantum computer
Published in npj quantum information (28-11-2019)“…Universal quantum computers are potentially an ideal setting for simulating many-body quantum dynamics that is out of reach for classical digital computers. We…”
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7
Vacancy-Induced Low-Energy Density of States in the Kitaev Spin Liquid
Published in Physical review. X (18-02-2021)“…The Kitaev honeycomb model has attracted significant attention due to its exactly solvable spin-liquid ground state with fractionalized Majorana excitations…”
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Logarithmic Spreading of Out-of-Time-Ordered Correlators without Many-Body Localization
Published in Physical review letters (23-08-2019)“…Out-of-time-ordered correlators (OTOCs) describe information scrambling under unitary time evolution, and provide a useful probe of the emergence of quantum…”
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9
Floquet prethermal order by disorder
Published in Physical review research (01-11-2024)“…Frustrated magnets can have accidental ground state degeneracies which may be lifted by various forms of disorder, for example in the form of thermal or…”
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10
Excitations in the field-induced quantum spin liquid state of α-RuCl3
Published in npj quantum materials (20-02-2018)“…The celebrated Kitaev quantum spin liquid (QSL) is the paradigmatic example of a topological magnet with emergent excitations in the form of Majorana Fermions…”
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11
Publisher Correction: Spin-Peierls instability of the U(1) Dirac spin liquid
Published in Nature communications (06-11-2024)Get full text
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12
Spin-Peierls instability of the U(1) Dirac spin liquid
Published in Nature communications (19-08-2024)“…Quantum fluctuations can inhibit long-range ordering in frustrated magnets and potentially lead to quantum spin liquid (QSL) phases. A prime example are…”
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Dynamical Hadron Formation in Long-Range Interacting Quantum Spin Chains
Published in PRX quantum (01-10-2022)“…The study of confinement in quantum spin chains has seen a large surge of interest in recent years. It is not only important for understanding a range of…”
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14
Kinetic ferromagnetism and topological magnons of the hole-doped Kitaev spin liquid
Published in npj quantum materials (04-09-2024)“…We study the effect of hole doping on the Kitaev spin liquid (KSL) and find that for ferromagnetic (FM) Kitaev exchange K the system is very susceptible to the…”
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15
Berry curvature-induced local spin polarisation in gated graphene/WTe2 heterostructures
Published in Nature communications (07-06-2022)“…Experimental control of local spin-charge interconversion is of primary interest for spintronics. Van der Waals (vdW) heterostructures combining graphene with…”
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16
Variational quantum algorithm with information sharing
Published in npj quantum information (22-07-2021)“…We introduce an optimisation method for variational quantum algorithms and experimentally demonstrate a 100-fold improvement in efficiency compared to naive…”
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Enhancing Disorder-Free Localization through Dynamically Emergent Local Symmetries
Published in PRX quantum (31-05-2022)“…Disorder-free localization is a recently discovered phenomenon of nonergodicity that can emerge in quantum many-body systems hosting gauge symmetries when the…”
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The range of non-Kitaev terms and fractional particles in α-RuCl3
Published in npj quantum materials (04-03-2020)“…Significant efforts have focused on the magnetic excitations of relativistic Mott insulators, predicted to realize the Kitaev quantum spin liquid (QSL). This…”
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Seasonal epidemic spreading on small-world networks: Biennial outbreaks and classical discrete time crystals
Published in Physical review research (09-02-2021)“…We study seasonal epidemic spreading in a susceptible-infected-removed-susceptible model on small-world graphs. We derive a mean-field description that…”
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Single-hole spectra of Kitaev spin liquids: from dynamical Nagaoka ferromagnetism to spin-hole fractionalization
Published in npj quantum materials (21-03-2024)“…The dynamical response of a quantum spin liquid upon injecting a hole is a pertinent open question. In experiments, the hole spectral function, measured…”
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