collaborators

5 papers

quant-ph2026

SAKE: Spectral Autodiff Kernel Expansion for Geometric Liouvillian Transport. A Differential-Geometric Framework for Response Transport in Quantum Dynamical Systems

Eric R. Bittner, Carlos Silva-Acuna, Hao Li +1

We introduce the Spectral Autodiff Kernel Expansion (SAKE), a differentiable computational framework for transporting nonlinear spectroscopic response between neighboring quantum d…

quant-ph2026

Liouvillian Geometry of Multidimensional Spectra: Pathway Transport and Observational Holonomy in Open Quantum Systems

Eric R. Bittner, Carlos Silva-Acuña, Hao Li

Liouville pathways provide the conceptual foundation for interpreting multidimensional spectroscopies and are commonly represented as independent contributions to the nonlinear res…

physics.app-ph2026

Timing Jitter Induced by Stochastic Baseline Fluctuations in High-Count-Rate Superconducting Nanowire Single-Photon Detectors

Dianpeng Wang, You Xiao, Jiamin Xiong +7

Superconducting nanowire single-photon detectors (SNSPDs) have demonstrated timing jitter in the few-picosecond regime, yet their timing resolution deteriorates substantially under…

physics.chem-ph2026

Detection Defines Dephasing in Two-Dimensional Electronic Spectroscopy of Materials: Coherent Field Emission versus Incoherent Population Observables

Simón Paiva-Ortega, Hao Li, Eric R. Bittner +1

The homogeneous spectral linewidth associated with light-matter interactions is a fundamental descriptor of the optical properties of materials, governed by the quantum dynamics of…

quant-ph2024

A quantum analog of Huygen's clock: noise-induced synchronization

Bhavay Tyagi, Hao Li, Eric R. Bittner +2

We propose a quantum analogue of the Huygens clock, in which the phases of two spins achieve synchronization through their interaction with a shared environment. The environment fu…