Publications de Christophe Marcel Georges Galland

Giant Purcell Broadening and Lamb Shift for DNA-Assembled Near-Infrared Quantum Emitters

Christophe Marcel Georges Galland, Sachin Suresh Verlekar

Controlling the light emitted by individual molecules is instrumental to a number of advanced nanotechnologies ranging from super-resolution bioimaging and molecular sensing to quantum nanophotonics. Molecular emission can be tailored by modifying the loca ...

2025

Photon antibunching in single-molecule vibrational sum-frequency generation

Christophe Marcel Georges Galland

Sum-frequency generation (SFG) enables the coherent upconversion of electromagnetic signals and plays a significant role in mid-infrared vibrational spectroscopy for molecular analysis. Recent research indicates that plasmonic nanocavities, which confine l ...

2025

Micro- and nanofabrication techniques for single crystal diamond photonics

Christophe Marcel Georges Galland

Synthetically grown high-quality single crystal diamond is an excellent base material for quantum photonics. Planar single crystal diamond substrates several square millimeters in size are nowadays commercially available. They can be precisely structured u ...

Elsevier2025

Data and code associated with the paper 'How to use the dispersion in the χ(3) tensor for broadband generation of polarization-entangled photons'

Christophe Marcel Georges Galland, Valeria Vento, Sakthi Priya Amirtharaj

Data and code associated with the following paper V. Vento, et al., Phys. Rev. Res. (2025) A thorough explanation of the experiment performed is available there. The name of each sub-folder and file in S-AS_chi3_code.zip indicates the corresponding figure ...

Zenodo2025

Fiber-Coupled Absorption-based Quantum Sensing with Nitrogen Vacancy Ensembles in a Suspended Diamond Photonic Cavity

Christophe Marcel Georges Galland, Amirali Arabmoheghi

Low photon extraction efficiency limits the optical spin readout fidelity in emerging quantum sensing technologies in diamond. Here, we propose and fabricate integrated diamond nanoprobes based on cavity-enhanced IR absorption of embedded Nitrogen Vacancy ...

IEEE Computer Society2024

Low-loss and high-index contrast ultraviolet-C free-standing waveguides made of thermal silicon oxide

Christophe Marcel Georges Galland

Photonics in the ultraviolet provides an avenue for key advances in biosensing, pharmaceutical research, and environmental sensing. However, despite recent progress in photonic integration, a technological solution to fabricate photonic integrated circuits ...

2024

Light Emission and Conductance Fluctuations in Electrically Driven and Plasmonically Enhanced Molecular Junctions

Christophe Marcel Georges Galland, Konstantin Malchow, Wen Chen, Sakthi Priya Amirtharaj

Electrically connected and plasmonically enhanced molecular junctions combine the optical functionalities of high field confinement and enhancement (cavity function), and of high radiative efficiency (antenna function) with the electrical functionalities o ...

Amer Chemical Soc2024

Nanocavities for Molecular Optomechanics: Their Fundamental Description and Applications

Christophe Marcel Georges Galland

Vibrational Raman scattering-a process where light exchanges energy with a molecular vibration through inelastic scattering-is most fundamentally described in a quantum framework where both light and vibration are quantized. When the Raman scatterer is emb ...

AMER CHEMICAL SOC2024

Integrated coplanar waveguide coil on diamond for enhanced homogeneous broadband NV magnetometry

Christophe Marcel Georges Galland, Hossein Babashah, Elena Losero

Nitrogen-vacancy (NV) centers in diamond have emerged as promising quantum sensors due to their highly coherent and optically addressable spin states with potential applications in high-sensitivity magnetometry. Homogeneously addressing large ensembles of ...

2024

Creation of NV Centers in Diamond under 155 MeV Electron Irradiation

Christophe Marcel Georges Galland, Victor Carle Adrien Boureau, Hossein Babashah, Elena Losero

Single-crystal diamond substrates presenting a high concentration of negatively charged nitrogen-vacancy centers (NV-) are on high demand for the development of optically pumped solid-state sensors such as magnetometers, thermometers, or electrometers. Whi ...

WILEY2023