Ultrafast pump-probe phase-randomized tomography
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866912261828771840 |
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| author | Glerean, Filippo Rigoni, Enrico Maria Jarc, Giacomo Mathengattil, Shahla Yasmin Montanaro, Angela Giusti, Francesca Mitrano, Matteo Benatti, Fabio Fausti, Daniele |
| author_facet | Glerean, Filippo Rigoni, Enrico Maria Jarc, Giacomo Mathengattil, Shahla Yasmin Montanaro, Angela Giusti, Francesca Mitrano, Matteo Benatti, Fabio Fausti, Daniele |
| contents | Measuring fluctuations in matter's low energy excitations is the key to unveil the nature of the nonequilibrium 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 $α$-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 $α$-quartz and provide a pathway to access nonequilibrium quantum fluctuations in more complex quantum materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_08855 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ultrafast pump-probe phase-randomized tomography Glerean, Filippo Rigoni, Enrico Maria Jarc, Giacomo Mathengattil, Shahla Yasmin Montanaro, Angela Giusti, Francesca Mitrano, Matteo Benatti, Fabio Fausti, Daniele Quantum Physics Optics Measuring fluctuations in matter's low energy excitations is the key to unveil the nature of the nonequilibrium 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 $α$-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 $α$-quartz and provide a pathway to access nonequilibrium quantum fluctuations in more complex quantum materials. |
| title | Ultrafast pump-probe phase-randomized tomography |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2411.08855 |