P. N. Thomas Lloyd
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View article: Single atomic layer quantum holography
Single atomic layer quantum holography Open
Quantum metasurfaces composed of subwavelength two-dimensional atomic arrays hold great promise as a practical and scalable atom-photon interface. However, these quantum metasurfaces are limited to amplitude control of photonic states ther…
View article: One dimensional staggered bosons, clock models, and their noninvertible symmetries
One dimensional staggered bosons, clock models, and their noninvertible symmetries Open
We study systems of staggered boson Hamiltonians in a one dimensional lattice and in particular how the translation symmetry by one unit in these systems is in reality a noninvertible symmetry closely related to T-duality. We also study th…
View article: Staggered bosons and Kahler-Dirac bosons
Staggered bosons and Kahler-Dirac bosons Open
We describe a novel way to think about bosonic lattice theories in Hamiltonian form where each lattice site has only a half boson degree of freedom. The construction requires a non-trivial Poisson bracket between neighboring sites and lead…
View article: Numerical exploration of the bootstrap in spin chain models
Numerical exploration of the bootstrap in spin chain models Open
We analyze the bootstrap approach (a dual optimization method to the variational approach) to one-dimensional spin chains, leveraging semidefinite programming to extract numerical results. We study how correlation functions in the ground s…
View article: Staggered bosons and Kahler-Dirac bosons
Staggered bosons and Kahler-Dirac bosons Open
We describe a novel way to think about bosonic lattice theories in Hamiltonian form where each lattice site has only a half boson degree of freedom. The construction requires a non-trivial Poisson bracket between neighboring sites and lead…
View article: One dimensional Staggered Bosons, Clock models and their non-invertible symmetries
One dimensional Staggered Bosons, Clock models and their non-invertible symmetries Open
We study systems of staggered boson Hamiltonians in a one dimensional lattice and in particular how the translation symmetry by one unit in these systems is in reality a non-invertible symmetry closely related to T-duality. We also study t…
View article: Changes in electric field noise due to thermal transformation of a surface ion trap
Changes in electric field noise due to thermal transformation of a surface ion trap Open
Here, we aim to illuminate how the microscopic properties of a metal surface map to its electric field noise characteristics. In our system, prolonged heat treatments of a metal film can induce a rise in the magnitude of the electric field…
View article: Correlated many-body noise and emergent $1/f$ behavior in an anharmonic fluctuator model
Correlated many-body noise and emergent $1/f$ behavior in an anharmonic fluctuator model Open
Fluctuating electric fields emanating from surfaces are a primary source of decoherence in trapped ion qubits. Here, we show that superradiant phonon-induced excitation exchange between adatoms can lead to a reduction of electric field noi…
View article: Cerenkov luminescence and PET imaging of <sup>90</sup> Y: capabilities and limitations in small animal applications
Cerenkov luminescence and PET imaging of <sup>90</sup> Y: capabilities and limitations in small animal applications Open
The in vivo sensitivity limits and quantification performance of Cerenkov luminescence imaging have been studied using a tissue-like mouse phantom and 90 Y. For a small, 9 mm deep target in the phantom, with no background activity present,…