3 papers
quant-ph2026
Beyond-Third-Order Quantum Coherence in Two-Dimensional Spectroscopy via Order-Selective Isolation
Xue Zhang, De-Ran Zhang, Hui Dong
A central challenge in nonlinear spectroscopy is the order-selective readout of weak higher-order responses that spectrally overlap with dominant lower-order signals. This bottlene…
quant-ph2025
Quantum-enhanced weak absorption estimation with correlated photons
Zhucheng Zhang, Xue Zhang, Jing Liu +1
Conventional absorption spectroscopy relies on coherent laser sources, and in turn suffers from the inherent limitation of shot noise, especially in estimating weak absorption. Her…
quant-ph2025
Measurement Uncertainty in Infrared Spectroscopy with Entangled Photon Pairs
Xue Zhang, Zhucheng Zhang, Hui Dong
Spectroscopy with entanglement has shown great potential to break limitations of traditional spectroscopic measurements, yet the role of entanglement in spectroscopic multi-paramet…