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Article
Practical quantum advantage in quantum simulation
The development of quantum computing across several technologies and platforms has reached the point of having an advantage over classical computers for an artificial problem, a point known as ‘quantum advanta...
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Article
Open AccessIndependent quality assessment of a commercial quantum random number generator
We reverse-engineer, test and analyse hardware and firmware of the commercial quantum-optical random number generator Quantis from ID Quantique. We show that ...
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Article
Open AccessProspects of quantum computing for molecular sciences
Molecular science is governed by the dynamics of electrons and atomic nuclei, and by their interactions with electromagnetic fields. A faithful physicochemical understanding of these processes is crucial for t...
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Article
Quantum programming languages
Quantum programming languages are essential to translate ideas into instructions that can be executed by a quantum computer. Not only are they crucial to the programming of quantum computers at scale but also ...
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Article
Neural-network quantum state tomography
The experimental realization of increasingly complex synthetic quantum systems calls for the development of general theoretical methods to validate and fully exploit quantum resources. Quantum state tomography...
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Article
Density functional theory versus quantum Monte Carlo simulations of Fermi gases in the optical-lattice arena
We benchmark the ground state energies and the density profiles of atomic repulsive Fermi gases in optical lattices (OLs) computed via density functional theory (DFT) against the results of diffusion Monte Ca...
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Article
Ferromagnetism of the repulsive atomic Fermi gas: three-body recombination and domain formation
The simplest model for itinerant ferromagnetism, the Stoner model, has so far eluded experimental observation in repulsive ultracold fermions due to rapid three-body recombination at large scattering lengths....
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Article
Thermodynamics of the Hubbard model on stacked honeycomb and square lattices
We present a numerical study of the Hubbard model on simply stacked honeycomb and square lattices, motivated by a recent experimental realization of such models with ultracold atoms in optical lattices. We pe...
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Article
Topological Thouless pum** of ultracold fermions
Charge transport in a cyclically time-modulated periodic potential, also known as a topological Thouless pump, has been realized in an ultracold gas of fermionic atoms.
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Article
Open AccessSimulating social-ecological systems: the Island Digital Ecosystem Avatars (IDEA) consortium
Systems biology promises to revolutionize medicine, yet human wellbeing is also inherently linked to healthy societies and environments (sustainability). The IDEA Consortium is a systems ecology open science i...
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Article
Type-II Weyl semimetals
A new type of topological semimetal is described, which contains so-called type-II Weyl fermions and has very different properties to standard Weyl semimetals, owing to the existence of an open Fermi surface r...
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Article
Open AccessThermalization of strongly interacting bosons after spontaneous emissions in optical lattices
We study the out-of-equilibrium dynamics of bosonic atoms in a 1D optical lattice, after the ground-state is excited by a single spontaneous emission event, i.e. after an absorption and re-emission of a lattic...
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Article
Evidence for quantum annealing with more than one hundred qubits
Quantum technology is maturing to the point where quantum devices, such as quantum communication systems, quantum random number generators and quantum simulators may be built with capabilities exceeding classi...
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Article
Double transfer through Dirac points in a tunable honeycomb optical lattice
We report on Bloch-Zener oscillations of an ultracold Fermi gas in a tunable honeycomb lattice. The quasi-momentum distribution of the atoms is measured after sequentially passing through two Dirac points. We ...
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Chapter and Conference Paper
VLI – A Library for High Precision Integer and Polynomial Arithmetic
We present a high-performance C++ library for high but fixed precision (128 to 512 bit) integer arithmetic and symbolic polynomial computations. While the large integer and polynomial computation parts of the ...
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Chapter
Fermionic and Continuous Time Quantum Monte Carlo
Diagrammatic “continuous-time” algorithms for fermionic systems are algorithms that evaluate the diagrammatic perturbation series of interacting many-body systems stochastically. The algorithms involve no appr...
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Article
Density functional theory for atomic Fermi gases
Density functional theory provides a powerful framework for probing electronic structure in many-body systems. A new functional for particles interacting via short-range potentials extends its applicability to...
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Chapter and Conference Paper
Bridging Workflow and Data Provenance Using Strong Links
As scientists continue to migrate their work to computational methods, it is important to track not only the steps involved in the computation but also the data consumed and produced. While this provenance inf...
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Article
Topology-driven quantum phase transitions in time-reversal-invariant anyonic quantum liquids
Indistinguishable particles in two dimensions can be characterized by anyonic quantum statistics, which is more general than that of bosons or fermions. Anyons emerge as quasiparticles in fractional quantum Ha...
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Article
A Classical Picture of the Role of Vacancies and Interstitials in Helium-4
Motivated by experimental hints for supersolidity in Helium-4, we perform Monte Carlo simulations of vacancies and interstitials in a classical two-and three-dimensional Lennard-Jones solid. We confirm a stron...
