436 citations · 1.4k across the 19 of their papers we have counts for
19 papers
Ground states of quantum XY dipoles on the Archimedean lattices
Marcus Bintz, Ahmed Khalifa, Vincent S. Liu +4
We report numerical ground states for the dipolar XY spin model, which describes extended antiferromagnetic interactions in two-dimensional arrays of polar molecules and two-level…
Tensor Network Python (TeNPy) version 1
Johannes Hauschild, Jakob Unfried, Sajant Anand +27
TeNPy (short for 'Tensor Network Python') is a python library for the simulation of strongly correlated quantum systems with tensor networks. The philosophy of this library is to a…
Dirac spin liquid in quantum dipole arrays
Marcus Bintz, Vincent S. Liu, Johannes Hauschild +4
We predict that the gapless Dirac spin liquid naturally emerges in a two-dimensional array of quantum dipoles. In particular, we demonstrate that the dipolar XY model$\unico…
Superconductivity in a Topological Lattice Model with Strong Repulsion
Rahul Sahay, Stefan Divic, Daniel E. Parker +8
The highly tunable nature of synthetic quantum materials -- both in the solid-state and cold atom contexts -- invites examining which microscopic ingredients aid in the realization…
Exotic quantum liquids in Bose-Hubbard models with spatially-modulated symmetries
Pablo Sala, Yizhi You, Johannes Hauschild +1
We investigate the effect that spatially modulated continuous conserved quantities can have on quantum ground states. We do so by introducing a family of one-dimensional local quan…
Fast Time-Evolution of Matrix-Product States using the QR decomposition
Jakob Unfried, Johannes Hauschild, Frank Pollmann
We propose and benchmark a modified time evolution block decimation (TEBD) algorithm that uses a truncation scheme based on the QR decomposition instead of the singular value decom…
Kekulé spiral order in magic-angle graphene: a density matrix renormalization group study
Tianle Wang, Daniel E. Parker, Tomohiro Soejima +4
When the two layers of a twisted moiré system are subject to different degrees of strain, the effect is amplified by the inverse twist angle, e.g., by a factor of 50 in magic angle…
Continuous Symmetry Breaking in a Two-dimensional Rydberg Array
Cheng Chen, Guillaume Bornet, Marcus Bintz +13
Spontaneous symmetry breaking underlies much of our classification of phases of matter and their associated transitions. The nature of the underlying symmetry being broken determin…
Holographic quantum simulation of entanglement renormalization circuits
Sajant Anand, Johannes Hauschild, Yuxuan Zhang +2
While standard approaches to quantum simulation require a number of qubits proportional to the number of simulated particles, current noisy quantum computers are limited to tens of…
Field-tuned and zero-field fractional Chern insulators in magic angle graphene
Daniel Parker, Patrick Ledwith, Eslam Khalaf +7
In contrast to the fractional quantum Hall (FQH) effect, where electron density fixes the applied magnetic field, fractional Chern insulators (FCIs) can realize FQH states in compa…
Strain-induced quantum phase transitions in magic angle graphene
Daniel E. Parker, Tomohiro Soejima, Johannes Hauschild +2
We investigate the effect of uniaxial heterostrain on the interacting phase diagram of magic-angle twisted bilayer graphene. Using both self-consistent Hartree-Fock and density-mat…
Efficient simulation of moire materials using the density matrix renormalization group
Tomohiro Soejima, Daniel E. Parker, Nick Bultinck +2
We present an infinite density-matrix renormalization group (DMRG) study of an interacting continuum model of twisted bilayer graphene (tBLG) near the magic angle. Because of the l…
The quantum sine-Gordon model with quantum circuits
Ananda Roy, Dirk Schuricht, Johannes Hauschild +2
Analog quantum simulation has the potential to be an indispensable technique in the investigation of complex quantum systems. In this work, we numerically investigate a one-dimensi…
Quantum phases of a one-dimensional Majorana-Bose-Hubbard model
Ananda Roy, Johannes Hauschild, Frank Pollmann
Majorana zero modes (MZM-s) occurring at the edges of a 1D, p-wave, spinless superconductor, in absence of fluctuations of the phase of the superconducting order parameter, are qui…
Efficient numerical simulations with Tensor Networks: Tensor Network Python (TeNPy)
Johannes Hauschild, Frank Pollmann
Tensor product state (TPS) based methods are powerful tools to efficiently simulate quantum many-body systems in and out of equilibrium. In particular, the one-dimensional matrix-p…
Finding purifications with minimal entanglement
Johannes Hauschild, Eyal Leviatan, Jens H. Bardarson +3
Purification is a tool that allows to represent mixed quantum states as pure states on enlarged Hilbert spaces. A purification of a given state is not unique and its entanglement s…
Domain-wall melting as a probe of many-body localization
Johannes Hauschild, Fabian Heidrich-Meisner, Frank Pollmann
Motivated by a recent optical-lattice experiment by Choi et al.[Science 352, 1547 (2016)], we discuss how domain-wall melting can be used to investigate many-body localization. Fir…
Sudden expansion and domain-wall melting of strongly interacting bosons in two-dimensional optical lattices and on multileg ladders
Johannes Hauschild, Frank Pollmann, Fabian Heidrich-Meisner
We numerically investigate the expansion of clouds of hard-core bosons in the two-dimensional square lattice using a matrix-product-state based method. This nonequilibrium set-up i…
The Drude weight of the spin-1/2 XXZ chain: density matrix renormalization group versus exact diagonalization
C. Karrasch, J. Hauschild, S. Langer +1
We revisit the problem of the spin Drude weight D of the integrable spin-1/2 XXZ chain using two complementrary approaches, exact diagonalization (ED) and the time-dependent densit…