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quant-ph2026
Non-Hermitian Rayleigh-Schrödinger-like Perturbation Theory at Exceptional Point
Wei-Ming Chen, Chia-Yi Ju
We develop a Rayleigh--Schrödinger-like perturbation theory for non-Hermitian quantum systems at an exceptional point of order . Working in the Jordan basis of the unperturbed H…
quant-ph2024★ 6 cited
Non-Hermitian Generalization of Rayleigh-Schrödinger Perturbation Theory
Wei-Ming Chen, Yen-Ting Lin, Chia-Yi Ju
While perturbation theories constitute a significant foundation of modern quantum system analysis, extending them from the Hermitian to the non-Hermitian regime remains a non-trivi…
quant-ph2024★ 1 cited
Optimal probe states for single-mode quantum target detection in arbitrary object reflectivity
Wei-Ming Chen, Pin-Ju Tsai
Quantum target detection (QTD) utilizes nonclassical resources to enable radar-like detection for identifying reflecting objects in challenging environments, surpassing classical m…