Ultrafast pump-probe phase-randomized tomography

被引：0

作者：

Glerean, Filippo ^{[1
,2
,3
]}

Rigoni, Enrico Maria ^{[1
,2
,4
]}

Jarc, Giacomo ^{[1
,2
,4
]}

Mathengattil, Shahla Yasmin ^{[1
,2
]}

Montanaro, Angela ^{[1
,2
,4
]}

Giusti, Francesca ^{[1
,2
]}

Mitrano, Matteo ^{[3
]}

Benatti, Fabio ^{[1
,2
,5
]}

Fausti, Daniele ^{[1
,2
,4
]}

机构：

[1] Univ Trieste, Dipartimento Fis, Trieste, Italy

[2] Sincrotrone Trieste SCpA, Basovizza, Italy

[3] Harvard Univ, Dept Phys, Cambridge, MA USA

[4] Univ Erlangen Nurnberg, Dept Phys, Erlangen, Germany

[5] Ist Nazl Fis Nucl, sez Trieste, Trieste, Italy

来源：

LIGHT-SCIENCE & APPLICATIONS | 2025年 / 14卷 / 01期

基金：

欧洲研究理事会; 欧盟地平线“2020”;

关键词：

LIGHT-INDUCED SUPERCONDUCTIVITY; STATE TOMOGRAPHY; QUANTUM; STATISTICS; FERROELECTRICITY; SCATTERING;

D O I：

10.1038/s41377-025-01789-y

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Measuring fluctuations in matter's low-energy excitations is the key to unveiling the nature of the non-equilibrium response of materials. A promising outlook in this respect is offered by spectroscopic methods that address matter fluctuations by exploiting the statistical nature of light-matter interactions with weak few-photon probes. Here we report the first implementation of ultrafast phase randomized tomography, combining pump-probe experiments with quantum optical state tomography, to measure the ultrafast non-equilibrium dynamics in complex materials. Our approach utilizes a time-resolved multimode heterodyne detection scheme with phase-randomized coherent ultrashort laser pulses, overcoming the limitations of phase-stable configurations and enabling a robust reconstruction of the statistical distribution of phase-averaged optical observables. This methodology is validated by measuring the coherent phonon response in alpha-quartz. By tracking the dynamics of the shot-noise limited photon number distribution of few-photon probes with ultrafast resolution, our results set an upper limit to the non-classical features of phononic state in alpha-quartz and provide a pathway to access non-equilibrium quantum fluctuations in more complex quantum materials.

引用

页数：8