25 citations · 51 across the 17 of their papers we have counts for
18 papers
Typical Superpositions are Magical
Joshuah T. Heath, Andrew Urilyon, Damien Quinn +1
The non-stabilizerness, or "magic", of a quantum state is a common metric for the hardness of simulation on a classical computer, and is often quantified by the stabilizer Rényi en…
Subgap Bound States from Dynamical Impurities
Joshuah T. Heath
We find that a single non-magnetic dynamical impurity (e.g., a low-frequency localized "vibron" mode) induces a subgap bound state in an s-wave superconductor. A closed-form soluti…
Typical Entanglement of Superpositions
Damien Quinn, Joshuah T. Heath, Graham Kells
We investigate universal entanglement properties inherent to superpositions of randomized states. We find that an -fold superposition of typical states may be classified into tw…
Tailoring Superconductivity with Two-Level Systems
Joshuah T. Heath, Alexander C. Tyner, S. Pamir Alpay +2
We investigate the impact of two-level systems (TLSs) on superconductivity, treating them as soft modes localised in real space. We show that these defects can either enhance or su…
Many-body effects of two-level systems in superconducting qubits
Joshuah T. Heath, Alexander C. Tyner, Thue Christian Thann +4
Superconducting qubits are often adversely affected by two-level systems (TLSs) within the Josephson junction, which contribute to decoherence and subsequently limit the performanc…
Identification of soft modes in amorphous AlO via first-principles
Alexander C. Tyner, Joshuah T. Heath, Thue Christian Thann +4
Amorphous AlO is a fundamental component of modern superconducting qubits. While amphorphous oxides offer distinct advantages, such as directional isotropy and a consis…
Universal scaling relations in electron-phonon superconductors
Joshuah T. Heath, Rufus Boyack
We study linear scaling relations in electron-phonon superconductors. By combining numerical and analytical techniques, we find linear Homes scaling relations between the zero-temp…
Optical Conductivity Signatures of Floquet Electronic Phases
Andrew Cupo, Joshuah T. Heath, Emilio Cobanera +3
Optical conductivity measurements may provide access to distinct signatures of Floquet electronic phases, which are described theoretically by their quasienergy band structures. We…
Quantum Computing 2022
James D. Whitfield, Jun Yang, Weishi Wang +2
Quantum technology is full of figurative and literal noise obscuring its promise. In this overview, we will attempt to provide a sober assessment of the promise of quantum technolo…
Signatures of a Majorana-Fermi surface in the Kitaev magnet AgLiIrO
Joshuah T. Heath, Faranak Bahrami, Sangyun Lee +4
Detecting Majorana fermions in experimental realizations of the Kitaev honeycomb model is often complicated by non-trivial interactions inherent to potential spin liquid candidates…
Gauging away the Stoner model: Engineering unconventional metallic ferromagnetism with artificial gauge fields
Joshuah T. Heath, Kevin S. Bedell
For nearly a century, the Stoner model has dominated research in itinerant ferromagnetism, yet recent work on ultracold, optically trapped Fermi gases suggests that phase separatio…
Landau Quasiparticles in Weak Power-Law Liquids
Joshuah T. Heath
The failure of Landau-Fermi liquid theory is often considered a telltale sign of universal, scale-invariant behavior in the emergent field theory of interacting fermions. Neverthel…
Chebyshev Polynomial Expansion of Two-Dimensional Landau-Fermi liquid Parameters
Joshuah T. Heath, Matthew P. Gochan, Kevin S. Bedell
We study the intrinsic effects of dimensional reduction on the transport equation of a perfectly two-dimensional Landau-Fermi liquid. By employing the orthogonality condition on th…
Atypical Behavior of Collective Modes in Two-Dimensional Fermi Liquids
Matthew P. Gochan, Joshuah T. Heath, Kevin S. Bedell
Using the Landau kinetic equation to study the non-equilibrium behavior of interacting Fermi systems is one of the crowning achievements of Landau's Fermi liquid theory. While thor…
Necessary and Sufficient Conditions for the Validity of Luttinger's Theorem
Joshuah T. Heath, Kevin S. Bedell
Luttinger's theorem is a major result in many-body physics that states the volume of the Fermi surface is directly proportional to the particle density. In its "hard" form, Lutting…
Universal Signatures of Majorana-like Quasiparticles in Strongly Correlated Landau-Fermi Liquids
Joshuah T. Heath, Kevin S. Bedell
Motivated by recent experiments in the Kitaev honeycomb lattice, Kondo insulators, and the "Luttinger's theorem-violating" Fermi liquid phase of the underdoped cuprates, we extend…
Exotic quantum statistics and thermodynamics from a number-conserving theory of Majorana fermions
Joshuah T. Heath, Kevin S. Bedell
We propose a closed form for the statistical distribution of non-interacting Majorana fermions at low temperature. Majorana particles often appear in the contemporary many-body lit…
Hierarchy of Fluctuation-Dissipation Theorems for the Classical One-Component Plasma
Kenneth Golden, Joshuah Heath
We have derived tractable cubic (p=3) and quartic (p=4) fluctuation-dissipation theorems (FDTs) for the classical one-component plasma in a form that links a single (p+1)-point dyn…