211 citations · 3.1k across the 86 of their papers we have counts for
86 papers
Cooperative effects in dense cold atomic gases including magnetic dipole interactions
N. S. Bassler, I. Varma, M. Proske +3
We theoretically investigate cooperative effects in cold atomic gases exhibiting both electric and magnetic dipole-dipole interactions, such as occurring for example in clouds of d…
Metasurface-based hybrid optical cavities for chiral sensing
Nico S. Bassler, Andrea Aiello, Kai P. Schmidt +2
Quantum metasurfaces, i.e., two-dimensional subwavelength arrays of quantum emitters, can be employed as mirrors towards the design of hybrid cavities, where the optical response i…
Projective cluster-additive transformation for quantum lattice models
M. Hörmann, K. P. Schmidt
We construct a projection-based cluster-additive transformation that block-diagonalizes wide classes of lattice Hamiltonians . Its cluster additivity…
Absence of fractal quantum criticality in the quantum Newman-Moore model
R. Wiedmann, L. Lenke., M. Mühlhauser +1
The quantum phase transition between the low-field fracton phase with type-II fracton excitations and the high-field polarized phase is investigated in the two-dimensional self-dua…
Continuous similarity transformation for critical phenomena: easy-axis antiferromagnetic XXZ model
Matthias R. Walther, Dag-Björn Hering, Götz S. Uhrig +1
We apply continuous similarity transformations (CSTs) to the easy-axis antiferromagnetic XXZ-model on the square lattice. The CST flow equations are truncated in momentum space by…
Linear optical elements based on cooperative subwavelength emitter arrays
Nico S. Bassler, Michael Reitz, Kai P. Schmidt +1
We describe applications of two-dimensional subwavelength quantum emitter arrays as efficient optical elements in the linear regime. For normally incident light, the cooperative op…