66 citations · 146 across the 5 of their papers we have counts for
5 papers
Certifying Quantum Temporal Correlation via Randomized Measurements: Theory and Experiment
Hongfeng Liu, Zhenhuan Liu, Shu Chen +3
We consider the certification of temporal quantum correlations using the pseudo-density matrix (PDM), an extension of the density matrix to the time domain, where negative eigenval…
Fundamental Sensitivity Limits for non-Hermitian Quantum Sensors
Wenkui Ding, Xiaoguang Wang, Shu Chen
Considering non-Hermitian systems implemented by utilizing enlarged quantum systems, we determine the fundamental limits for the sensitivity of non-Hermitian sensors from the persp…
Fundamental Limitation on the Detectability of Entanglement
Pengyu Liu, Zhenhuan Liu, Shu Chen +1
Entanglement detection is essential in quantum information science and quantum many-body physics. It has been proved that entanglement exists almost surely for a random quantum sta…
Dynamic quantum-enhanced sensing without entanglement in central spin systems
Wenkui Ding, Yanxia Liu, Zhenyu Zheng +1
We propose a dynamic quantum sensing scheme by using a quantum many-spin system composed of a central spin interacting with many surrounding spins. Starting from a generalized Isin…
Detecting entanglement in quantum many-body systems via permutation moments
Zhenhuan Liu, Yifan Tang, Hao Dai +3
Multipartite entanglement plays an essential role in both quantum information science and many-body physics. Due to the exponentially large dimension and complex geometric structur…