72 citations · 247 across the 25 of their papers we have counts for
25 papers
The influence of quantum geometry on the phase boundary and collective excitations of electron liquids and crystals
Paul Froese, Mark R. Hirsbrunner, Yong Baek Kim
Recent experiments on multilayer graphene systems have reinvigorated the study of electron crystallization, now with the inclusion of quantum geometry. In this work, we apply time-…
Topological phonons in anomalous Hall crystals
Mark R. Hirsbrunner, Félix Desrochers, Joe Huxford +1
Recent experiments on few-layer graphene structures have reported indirect signatures of anomalous Hall crystals (AHCs), but the need for a top gate to stabilize the phase preclude…
Electronic Crystal Phases in the Presence of Non-Uniform Berry Curvature and Tunable Berry Flux: The -Jellium model
Félix Desrochers, Joe Huxford, Mark R. Hirsbrunner +1
Recent experiments on multilayer graphene systems have rekindled interest in electronic crystal phases in two dimensions -- but now for phases enriched by non-trivial quantum geome…
Quantum criticality and nonequilibrium dynamics on a Lieb lattice of Rydberg atoms
Mark R. Hirsbrunner, Milan Kornjača, Rhine Samajdar +9
Neutral-atom quantum simulators offer a promising approach to the exploration of strongly interacting many-body systems, with applications spanning condensed matter, statistical me…
Probing quantum geometry with two-dimensional nonlinear optical spectroscopy
Paul Froese, Mark R. Hirsbrunner, Yong Baek Kim
Recent studies have shown that the nonlinear optical response of crystalline systems is fundamentally a quantum geometric property. In this work, we propose two-dimensional coheren…
Quantized crystalline-electromagnetic responses in insulators
Sachin Vaidya, André Grossi Fonseca, Mark R. Hirsbrunner +2
We introduce new classes of gapped topological phases characterized by quantized crystalline-electromagnetic responses, termed "multipolar Chern insulators". These systems are char…
Elastic Response and Instabilities of Anomalous Hall Crystals
Félix Desrochers, Mark R. Hirsbrunner, Joe Huxford +3
Anomalous Hall crystals (AHCs) are exotic phases of matter that simultaneously break continuous translation symmetry and exhibit the quantum anomalous Hall effect. AHCs have recent…
Long-lived oscillations of metastable states in neutral atom systems
Siva Darbha, Milan Kornjača, Fangli Liu +7
Metastable states arise in a range of quantum systems and can be observed in various dynamical scenarios, including decay, bubble nucleation, and long-lived oscillations. The pheno…
False vacuum decay and nucleation dynamics in neutral atom systems
Siva Darbha, Milan Kornjača, Fangli Liu +7
Metastable states of quantum many-body systems with confinement offer a means to simulate false vacuum phenomenology, including non-equilibrium dynamical processes like decay by nu…
A circuit-generated quantum subspace algorithm for the variational quantum eigensolver
Mark R. Hirsbrunner, J. Wayne Mullinax, Yizhi Shen +4
Recent research has shown that wavefunction evolution in real- and imaginary-time can generate quantum subspaces with significant utility for obtaining accurate ground state energi…
Engineering quantum states with neutral atoms
Jan Balewski, Milan Kornjača, Katherine Klymko +5
Aquila, an analog quantum simulation platform developed by QuEra Computing, supports control of the position and coherent evolution of up to 256 neutral atoms. This study details n…
Crystalline axion electrodynamics in charge-ordered Dirac semimetals
Julian May-Mann, Mark R. Hirsbrunner, Lei Gioia +1
Three-dimensional Dirac semimetals can be driven into an insulating state by coupling to a charge density wave (CDW) order. Here, we consider the quantized crystalline responses of…
Competing Higher Order Topological Superconducting Phases in Triangular Lattice Magnet-Superconductor Hybrid Systems
Ka Ho Wong, Jacopo Gliozzi, Mark R. Hirsbrunner +4
We demonstrate that a plethora of higher order topological phases emerge in magnet-superconductor hybrid (MSH) systems through the interplay of a stacked magnetic structure and an…
Anomalous crystalline-electromagnetic responses in semimetals
Mark R. Hirsbrunner, Oleg Dubinkin, Fiona J. Burnell +1
We present a unifying framework that allows us to study the mixed crystalline-electromagnetic responses of topological semimetals in spatial dimensions up to through dimens…
Crystalline-electromagnetic responses of higher order topological semimetals
Mark R. Hirsbrunner, Alexander D. Gray, Taylor L. Hughes
Previous work has shown that time-reversal symmetric Weyl semimetals with a quadrupolar arrangement of first-order Weyl nodes exhibit a mixed crystalline-electromagnetic response.…
Beyond MP2 initialization for unitary coupled cluster quantum circuits
Mark R. Hirsbrunner, Diana Chamaki, J. Wayne Mullinax +1
The unitary coupled cluster (UCC) ansatz is a promising tool for achieving high-precision results using the variational quantum eigensolver (VQE) algorithm in the NISQ era. However…
Higher Order Topological Superconductivity in Magnet-Superconductor Hybrid Systems
Ka Ho Wong, Mark R. Hirsbrunner, Jacopo Gliozzi +4
Quantum engineering of topological superconductors and of the ensuing Majorana zero modes might hold the key for realizing a new paradigm for the implementation of topological quan…
Spin-selective tunneling from nanowires of the candidate topological Kondo insulator SmB6
Anuva Aishwarya, Zhuozhen Cai, Arjun Raghavan +9
Incorporating relativistic physics into quantum tunneling can lead to exotic behavior such as perfect transmission via Klein tunneling. Here, we probe the tunneling properties of s…
Evidence for a robust sign-changing s-wave order parameter in monolayer films of superconducting Fe (Se,Te)/Bi2Te3
Guannan Chen, Anuva Aishwarya, Mark R. Hirsbrunner +9
The Fe-based superconductor Fe (Se,Te) combines non-trivial topology with unconventional superconductivity and may be an ideal platform to realize exotic states such as high-order…
Topological Field Theories of Three-Dimensional Rotation Symmetric Insulators: Coupling Curvature and Electromagnetism
Julian May-Mann, Mark R. Hirsbrunner, Xuchen Cao +1
Quantized responses are important tools for understanding and characterizing the universal features of topological phases of matter. In this work, we consider a class of topologica…
Engineering ideal helical topological networks in stanene via Zn decoration
Jennifer Coulter, Mark R. Hirsbrunner, Oleg Dubinkin +2
The xene family of topological insulators plays a key role in many proposals for topological electronic, spintronic, and valleytronic devices. These proposals rely on applying loca…
Electric field effects on the band gap and edge states of monolayer 1T'-WTe2
Yulia Maximenko, Yueqing Chang, Guannan Chen +5
Monolayer 1T'-WTe2 is a quantum spin Hall insulator with a gapped bulk and gapless helical edge states persisting to temperatures around 100 K. Recent studies have revealed a topol…
Topology and Observables of the Non-Hermitian Chern Insulator
Mark R. Hirsbrunner, Timothy M. Philip, Matthew J. Gilbert
Topology plays a central role in nearly all disciplines of physics, yet its applications have so far been restricted to closed, lossless systems in thermodynamic equilibrium. Given…
Loss of Hall Conductivity Quantization in a Non-Hermitian Quantum Anomalous Hall Insulator
Timothy M. Philip, Mark R. Hirsbrunner, Matthew J. Gilbert
Recent work has extended topological band theory to open, non-Hermitian Hamiltonians, yet little is understood about how non-Hermiticity alters the topological quantization of asso…