5 papers
Localization Contrast As a Fundamental Limit of Radiative Quantum Efficiency
Arsineh Apelian, Tanay Tak, Xuance Jiang +3
Disorder can localize valence- and conduction-band states to different degrees, yet whether such localization contrast has observable consequences remains poorly understood. Here,…
Surface coupling of NV centers over nanoscale lengths
Arsineh Apelian, Mariya Romanova, Vojtech Vlcek
Shallow nitrogen-vacancy (NV-) centers in diamond are among the most promising quantum sensors, offering high sensitivity and nanoscale spatial resolution. These systems are, howev…
Delocalization of Quasiparticle Moiré States in Twisted Bilayer hBN
Arsineh Apelian, Annabelle Canestraight, Songyuan Liu +1
Twisted bilayers host many emergent phenomena in which the electronic excitations (quasiparticles - QPs) are closely intertwined with the local stacking order. By inspecting twiste…
Dynamical downfolding for localized quantum states
Mariya Romanova, Guorong Weng, Arsineh Apelian +1
We introduce an approach to treat localized correlated electronic states in the otherwise weakly correlated host medium. Here, the environment is dynamically downfolded on the corr…
Reduced scaling of optimal regional orbital localization via sequential exhaustion of the single-particle space
Guorong Weng, Mariya Romanova, Arsineh Apelian +2
Wannier functions have become a powerful tool in the electronic structure calculations of extended systems. The generalized Pipek-Mezey Wannier functions exhibit appealing characte…