6 citations · 13 across the 4 of their papers we have counts for
5 papers
Rank-One Loss Maximizes the Spectral Response Strength of Passive Full-Order Exceptional Points
Jan Wiersig
We consider finite-dimensional non-Hermitian systems in which all modes coalesce at a single exceptional point. For a rank-one anti-Hermitian contribution, the spectral response st…
Fundamental Limits of Non-Hermitian Sensing from Quantum Fisher Information
Jan Wiersig, Stefan Rotter
Exceptional points (EPs) exhibit strongly enhanced spectral responses and are therefore promising candidates for sensing applications. Whether these non-Hermitian degeneracies prov…
Exceptional Points and Lasing Thresholds: When Lower-Q Modes Win
Julius Kullig, Qi Zhong, Jan Wiersig +1
One of the most fundamental questions in laser physics is the following: Which mode of an optical cavity will reach the lasing threshold first when gain is applied? Intuitively, th…
Generalized Petermann factor of non-Hermitian systems at exceptional points
Julius Kullig, Jan Wiersig, Henning Schomerus
The nonorthogonality of modes in open systems significantly modifies their resonant response, resulting in quantitative and qualitative deviations from Breit-Wigner resonance relat…
Higher-order exceptional points in composite non-Hermitian systems
Jan Wiersig, Weijian Chen
We show that a composite quantum system described by the tensor product of multiple systems each with a leading-order exceptional point (a non-Hermitian degeneracy at which not onl…