4 papers
A unified framework for efficient quantum simulation of nonlinear spectroscopy
Long Xiong, Xiaoyang Wang, Xiaoxia Cai +1
Nonlinear spectroscopy is a cornerstone of quantum science, providing unique access to multi-point correlations, quantum coherence, and couplings that are invisible to linear metho…
Computing n-time correlation functions without ancilla qubits
Xiaoyang Wang, Long Xiong, Xiaoxia Cai +1
The -time correlation function is pivotal for establishing connections between theoretical predictions and experimental observations of a quantum system. Conventional methods fo…
Characterizing Topological Phase Transition in Non-Hermitian Systems
ZhaoXiang Fang, Yongxu Fu, Guang-Can Guo +1
We propose and present a concept of Topological Distance (TD), obtained from the integration of trace distance over the generalized Brillouin zone, in order to characterize the top…
Hermitian and Non-Hermitian Topological Transitions Characterized by Manifold Distance
ZhaoXiang Fang, Ming Gong, Guang-Can Guo +2
Topological phases are generally characterized by topological invariants denoted by integer numbers. However, different topological systems often require different topological inva…