Imperial College London
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ProfessorRiccardoSapienza

Faculty of Natural Sciences, Department of Physics

Professor of Physics
 
 
 
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Contact

 

+44 (0)20 7594 9577r.sapienza Website

 
 
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Location

 

B913Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Tirole:2023:10.1038/s41567-023-01993-w,
author = {Tirole, R and Vezzoli, S and Galiffi, E and Robertson, I and Maurice, D and Tilmann, B and Maier, SA and Pendry, JB and Sapienza, R},
doi = {10.1038/s41567-023-01993-w},
journal = {Nature Physics},
pages = {999--1002},
title = {Double-slit time diffraction at optical frequencies},
url = {http://dx.doi.org/10.1038/s41567-023-01993-w},
volume = {19},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Double-slit experiments—where a wave is transmitted through a thin double aperture in space—have confirmed the wave–particle duality of quantum objects, such as single photons, electrons, neutrons, atoms and large molecules. Yet, the temporal counterpart of Young’s double-slit experiment—a wave interacting with a double temporal modulation of an interface—remains elusive. Here we report such a time-domain version of the classic Young’s double-slit experiment: a beam of light twice gated in time produces an interference in the frequency spectrum. The ‘time slits’, narrow enough to produce diffraction at optical frequencies, are generated from the optical excitation of a thin film of indium tin oxide near its epsilon-near-zero point. The separation between time slits determines the period of oscillations in the frequency spectrum, whereas the decay of fringe visibility in frequency reveals the shape of the time slits. Surprisingly, many more oscillations are visible than expected from existing theory, implying a rise time that approaches an optical cycle. This result enables the further exploration of time-varying physics, towards the spectral synthesis of waves and applications such as signal processing and neuromorphic computation.
AU  - Tirole,R
AU  - Vezzoli,S
AU  - Galiffi,E
AU  - Robertson,I
AU  - Maurice,D
AU  - Tilmann,B
AU  - Maier,SA
AU  - Pendry,JB
AU  - Sapienza,R
DO  - 10.1038/s41567-023-01993-w
EP  - 1002
PY  - 2023///
SN  - 1745-2473
SP  - 999
TI  - Double-slit time diffraction at optical frequencies
T2  - Nature Physics
UR  - http://dx.doi.org/10.1038/s41567-023-01993-w
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000963808400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://www.nature.com/articles/s41567-023-01993-w
VL  - 19
ER  -
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