School of Mathematical and Physical Sciences

EPic Laboratory

Emergent Photonics Laboratory

The Emergent Photonics Lab is a fertile research enviroment at the University of Sussex focused on the "emergent" photonic properties in complex nonlinear optical systems. The lab presently hosts the work of 17 researchers directed by Alessia Pasquazi and Marco Peccianti, the lab founders. In particular, the research staff now consists of three Post Doctoral researchers, seven PhD students and seven undergraduate research students. Research interests are split into two major directions, on integrated nonlinear photonic systems and their application in quantum technologies and in cutting edge Terahertz science. 

Emergent Photonics Laboratory (EPic), Dept. of Physics and Astronomy, Pevensey 2 4A20.

External Project-Specific Websites:

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OSA Student Chapter

osa chapter bannerThe Emergent Photonics Lab supports the established Optical Society of America Student Chapter at the University of Sussex. In collaboration with the Quantum Talks, short weekly seminars have been organised to encourage collaboration between research groups.

We welcome both internal and external students or staff who are interested in presenting, you can subscribe to the Quantum Talks here.

Funding From:

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Hyperspectral terahertz microscopy via nonlinear ghost imaging

18th Feb 2020

Luana Olivieri,Juan S. Totero Gongora,Luke Peters,1Vittorio Cecconi, Antonio Cutrona,Jacob Tunesi,Robyn Tucker, Alessia Pasquazi, and Marco Peccianti

Hyperspectral terahertz microscopy via nonlinear ghost imaging
Ghost imaging, based on single-pixel detection and multiple pattern illumination, is a crucial investigative tool in difficult-to-access wavelength regions. In the terahertz domain, where high-resolution imagers are mostly unavailable, ghost imaging is an optimal approach to embed the temporal dimension, creating a “hyperspectral” imager. In this framework, high resolution is mostly out of reach. Hence, it is particularly critical to developing practical approaches for microscopy. Here we experimentally demonstrate time-resolved nonlinear ghost imaging, a technique based on near-field, optical-to-terahertz nonlinear conversion and detection of illumination patterns. We show how space-time coupling affects near-field time-domain imaging, and we develop a complete methodology that overcomes fundamental systematic reconstruction issues. Our theoretical-experimental platform enables high-fidelity subwavelength imaging and carries relaxed constraints on the nonlinear generation crystal thickness. Our work establishes a rigorous framework to reconstruct hyperspectral images of complex samples inaccessible through standard fixed-time methods.