144 citations · 284 across the 6 of their papers we have counts for
7 papers
Detection of entangled states supported by reinforcement learning
Jia-Hao Cao, Feng Chen, Qi Liu +4
Discrimination of entangled states is an important element of quantum enhanced metrology. This typically requires low-noise detection technology. Such a challenge can be circumvent…
Quantum enhanced sensing by echoing spin-nematic squeezing in atomic Bose-Einstein condensate
Tian-Wei Mao, Qi Liu, Xin-Wei Li +6
Quantum entanglement can provide enhanced precision beyond standard quantum limit (SQL), the highest precision achievable with classical means. It remains challenging, however, to…
Higher-Order Photon Statistics as a New Tool to Reveal Hidden Excited States in a Plasmonic Cavity
Philipp Stegmann, Satyendra Nath Gupta, Gilad Haran +1
Among the best known quantities obtainable from photon correlation measurements are the ~correlation functions. Here, we introduce a new procedure to evaluate these correl…
Nonlinear interferometry beyond classical limit facilitated by cyclic dynamics
Qi Liu, Ling-Na Wu, Jia-Hao Cao +5
Time-reversed evolution has substantial implications in physics, including prominent applications in refocusing of classical waves or spins and fundamental researches such as quant…
Faster State Preparation across Quantum Phase Transition Assisted by Reinforcement Learning
Shuai-Feng Guo, Feng Chen, Qi Liu +6
An energy gap develops near quantum critical point of quantum phase transition in a finite many-body (MB) system, facilitating the ground state transformation by adiabatic paramete…
Multi-parameter estimation with multi-mode Ramsey interferometry
Xinwei Li, Jia-Hao Cao, Qi Liu +2
Estimating multiple parameters simultaneously is of great importance to measurement science and application. For a single parameter, atomic Ramsey interferometry (or equivalently o…
Beating the classical precision limit with spin-1 Dicke state of more than 10000 atoms
Yi-Quan Zou, Ling-Na Wu, Qi Liu +5
Interferometry is a paradigm for most precision measurements. Using uncorrelated particles, the achievable precision for a two-mode (two-path) interferometer is bounded by the…