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INhomogenieties and fluctuations in quantum CohErent matter Phases by ultrafast optical Tomography

Total Cost €


EC-Contrib. €






Project "INCEPT" data sheet

The following table provides information about the project.


Organization address
postcode: 34127

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Italy [IT]
 Total cost 1˙500˙000 €
 EC max contribution 1˙500˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-STG
 Funding Scheme ERC-STG
 Starting year 2016
 Duration (year-month-day) from 2016-06-01   to  2021-05-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITA DEGLI STUDI DI TRIESTE IT (TRIESTE) coordinator 1˙350˙000.00


 Project objective

Standard time domain experiments measure the time evolution of the reflected/transmitted mean number of photons in the probe pulses. The evolution of the response of a material is typically averaged over the illuminated area as well as over many pump and probe measurements repeated stroboscopically. The aim of this project is to extend time domain optical spectroscopy beyond mean photon number measurements by performing a full Time Resolved Quantum State Reconstruction (TRQSR) of the probe pulses as a function of the pump and probe delay. The nature of the light matter interaction and the transient light-induced states of matter will be imprinted into the probe quantum state after the interaction with the material and can be uncovered with unprecedented detail with this new approach to time domain studies.

TRQSR will be implemented by combining pump and probe experiments resolving single light pulses with balanced homodyne detection quantum tomography in the pulsed regime. We will apply and exploit the unique capabilities of TRQSR to address two different unresolved problems in condensed matter. Firstly, we will investigate the coherent and squeezed nature of low energy photo-induced vibrational states. We will use TRQSR with probe pulses shorter than the phonon timescale to interrogate the time evolution of the vibrational state induced by the pump pulse. Secondly, we will address inhomogeneities in photo-induced phase transformations. With TRQSR we can perform time domain measurements with a very small photon number per pulse which will give information on the interaction between the material (as prepared by the pump pulse) and individual photons. In this limit, TRQSR will allow us to retrieve rich statistics. While the average will deliver the information of a standard pump and probe experiment, higher order moments will give information on the time evolution of spatial inhomogenieties in the transient state.


year authors and title journal last update
List of publications.
2017 Francesco Randi, Martina Esposito, Francesca Giusti, Oleg Misochko, Fulvio Parmigiani, Daniele Fausti, Martin Eckstein
Probing the Fluctuations of Optical Properties in Time-Resolved Spectroscopy
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.119.187403
Physical Review Letters 119/18 2019-07-08
2017 Francesco Randi, Daniele Fausti, Martin Eckstein
Bypassing the energy-time uncertainty in time-resolved photoemission
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.95.115132
Physical Review B 95/11 2019-07-08
2017 Fabio Benatti, Martina Esposito, Daniele Fausti, Roberto Floreanini, Kelvin Titimbo, Klaus Zimmermann
Generation and detection of squeezed phonons in lattice dynamics by ultrafast optical excitations
published pages: 23032, ISSN: 1367-2630, DOI: 10.1088/1367-2630/aa50bc
New Journal of Physics 19/2 2019-07-08
2018 J. Tollerud, G. Sparapassi, A. Montanaro, S. Asban, F. Glerean, F. Giusti, A. Marciniak, G. Kourousias, F. Billè, F. Cilento, S. Mukamel, D. Fausti
Femtosecond Covariance Spectroscopy
published pages: , ISSN: 1091-6490, DOI:
(accepted for publication) PNAS journal 2019-05-25
2018 M. Ramezani, F. Benatti, R. Floreanini, S. Marcantoni, M. Golshani, A. T. Rezakhani
Quantum detailed balance conditions and fluctuation relations for thermalizing quantum dynamics
published pages: , ISSN: 2470-0045, DOI: 10.1103/physreve.98.052104
Physical Review E 98/5 2019-05-25
2018 Filippo Glerean, Stefano Marcantoni, Giorgia Sparapassi, Andrea Blason, Martina Esposito, Fabio Benatti, Daniele Fausti
Quantum model for Impulsive Stimulated Raman Scattering
published pages: , ISSN: , DOI:

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