THOR

TeraHertz detection enabled by mOleculaR optomechanics

About Project

Overview

The generation, manipulation and detection of electromagnetic waves across the entire frequency spectrum is the cornerstone of modern technologies, underpinning wide disciplines across sensing, imaging, spectroscopy and data processing, amongst others. Whilst the last century has witnessed an impressive evolution in devices operating at frequencies either below 0.1 THz (microwave and antenna technology) or above 50 THz (near-infrared and visible optical technology), in between the lack of suitable materials and structures for efficient electromagnetic manipulation has resulted in the so-called “THz gap” : a band of frequencies in the 0.3 – 30 THz region of the spectrum for which compact and cost-effective sources and detectors do not exist – even though their application has enormous potential in medical diagnostics, security, astronomy, and wireless communication.

In this project, we will demonstrate the first nano-scale, cost-effective, fast and low-noise detector working at room temperature in the 1 – 30 THz range by developing a radically new concept of signal up-conversion to visible/near-infrared (VIS/NIR) radiation, leveraging the latest scientific breakthroughs in the new scientific field of molecular cavity optomechanics. In particular, we will design and synthesize molecules with both large IR and Raman vibrational activity in that THz range to be integrated into plasmonic nano- and pico-cavities so that their vibration mediates the coherent transfer of energy from the THz to the laser signal driving the cavity. In our approach, we will also employ THz antennas to improve the coupling efficiency of the THz field to the molecules.

This bold vision, which builds on the fundamentals of light-matter interaction (science) and converges toward the on-chip integration in a silicon-compatible chip (technology), completely surpasses any previous technological paradigms related to the measurement of THz molecular vibration as well as its possible manipulation.

Fact Sheet

Project ID
829067
EU Contribution
EUR 3,274,122.5
Total Cost
EUR 3,274,122.5
Call for Proposal
H2020-FETOPEN-2018-2019-2020-01
Term of completion
28/02/2022

Consortium

Universitat Politècnica de València (UPV), Spain (Coordinator)
http://www.upv.es/
Plasmonic Metamaterials - Leader: Alejandro Martínez
https://www.ntc.upv.es/english/metamaterials.html
Nanophotonics Technology Center - Leader: Alejandro Martínez
https://www.ntc.upv.es/
Stichting Nederlandse Wetenschappelijk Onderzoek Instituten (AMOLF), The Netherland
http://www.amolf.nl/
Resonant Nanophotonics Group - Leader: Femius Koenderink
https://amolf.nl/research-groups/resonant-nanophotonics
Photonic Forces Group - Leader: Ewold Verhagen
https://amolf.nl/research-groups/photonic-forces
King's College London (KCL), United Kingdom
http://www.kcl.ac.uk/
Rosta research Group - Leader: Edina Rosta
http://www.rostaresearch.com/
The Chancellor Masters and Scholars of the University of Cambridge (UCAM), United Kingdom
http://www.cam.ac.uk/
Nanophotonics Centre - Leader: Jeremy Baumberg
https://www.np.phy.cam.ac.uk/
Agencia Estatal Consejo Superior de Investigaciones Científicas (CSIC), Spain
http://www.csic.es/
Theory of Nanophotonics Group - Leader: Javier Aizpurúa
http://cfm.ehu.es/nanophotonics/
Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland
http://www.epfl.ch/
Laboratory of Quantum Nano-optics - Leader: Christophe Galland
https://lqno.epfl.ch/
Laboratory of Photonics and Quantum Measurements - Leader: Tobias Kippenberg
https://k-lab.epfl.ch/
Lytid Sas (LYT), France
http://lytid.com/
Leader: Pierre Gellie

THOR's Vision

The overall objective of THOR is to demonstrate a compact, on-chip, CW-laser-driven THz detector with ultrafast response and excellent NEP using optomechanically-controlled molecular vibrations in a plasmonic cavity.

To this end, the following specific objectives will be pursued:

  1. Designing and synthesizing molecules with strongly infrared and Raman-active vibrational resonances in the 1-30 THz range (OBJ1).
  2. Building cavities with optical Q factors > 10^3, mode volumes ∼λ^3/10^4, molecular vacuum coupling rate g0/2π >> 1 GHz, integrated with THz antennas (OBJ2).
  3. Establishing coherent interactions of both light and THz radiation with molecular vibrations, demonstrating dynamical backaction state conversion with effective cooperativity C > 1 (OBJ3).
  4. Experimental demonstration and characterization of a room-temperature, low-noise, coherent THz-to-optics converter on a silicon chip (OBJ4).

THOR’s device: a plasmonic nano- or pico-cavity loaded with a molecular ensemble is integrated into a silicon nitride waveguide. THz antennas increase the collection efficiency. THz-shifted Vis/NIR light can be efficiently detected with ultra-low noise using standard equipment.

This section will be completed with project results.

News

Kick-off Meeting of the THOR project

Kick-off Meeting of the THOR project

March 12-13, 2019: The Kick-off Meeting of the THOR project was held in Amsterdam (The Netherlands) at the premises of partner AMOLF.

Thanks to F. Koenderink and Ewold Verhagen for a great organization. We had a very successful meeting, plenty of interesting scientific dicussion. Just the first step towards a successful project!

eldiario.es - Desarrollan un dispositivo que mejorará la detección de drogas y explosivos

eldiario.es - Desarrollan un dispositivo que mejorará la detección de drogas y explosivos

Cadena SER - La UPV desarrolla una herramienta para facilitar la detección de explosivos o drogas

Cadena SER - La UPV desarrolla una herramienta para facilitar la detección de explosivos o drogas

cadenaser.com collects an article on the Thor project:
https://cadenaser.com/emisora/2019/07/20/radio_valencia/1563616811_670868.html

 

cadenaser.com recoge una artículo sobre el proyecto Thor:
https://cadenaser.com/emisora/2019/07/20/radio_valencia/1563616811_670868.html

Dissemination

This section will be completed with publications.

“Press releases” which provides information addressable to the wider public (press releases, magazines, etc.).

Contact

Project Coordinator

Prof. Alejandro Martínez

UPV

Camino de Vera s/n, Acceso K, Edificio 8F, Planta 2

46022 Valencia, Spain

amartinez@ntc.upv.es

Contact us for more information!