3 papers
quant-ph2026
Remote Flux Refocuses Nonadiabatic Excursions in Compact-State Quantum Transfer
X. S. Meng, Y. S. Liu, X. Z. Zhang
Compact states embedded in a propagating band can carry quantum information, but finite-time transfer can populate modes outside their subspace. We show that a remote flux can refo…
quant-ph2026
Interior skin focusing and directional mirror transfer in a graded non-Hermitian Krawtchouk network
Y. S. Liu, X. Z. Zhang
Spatially graded nonreciprocity can move skin weight away from a boundary, but it does not generally preserve a real commensurate spectrum or analytically controlled dynamics. We s…
quant-ph2026
Graded hopping screens nonreciprocity and reorganizes Stark asymptotics in a non-Hermitian Stark chain
Y. S. Liu, X. Z. Zhang
We study a one-dimensional non-Hermitian Stark chain in which nonreciprocal hopping, a linear potential, and linearly graded hopping act simultaneously. The central question is how…