4 citations · 4 across the 2 of their papers we have counts for
2 papers
quant-ph2025★ 4 cited
Dynamically encircling an exceptional point through phase-tracked closed-loop control
Sen Zhang, Yangyu Huang, Lei Yu +7
The intricate complex eigenvalues of non-Hermitian Hamiltonians manifest as Riemann surfaces in control parameter spaces. At the exceptional points (EPs), the degeneracy of both ei…
math.CO2025
On Average Distance, Level-1 Fourier Weight, and Chang's Lemma
Lei Yu
In this paper, we improve the well-known level-1 weight bound, also known as Chang's lemma, by using an induction method. Our bounds are close to optimal no matter when the set is…