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Christophe Marcel Georges Galland

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Related publications (39)

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

Christophe Marcel Georges Galland, Elena Losero, Hossein Babashah

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

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

Neuronal growth on high-aspect-ratio diamond nanopillar arrays for biosensing applications

Hilal Lashuel, Niels Quack, Christophe Marcel Georges Galland, Somanath Jagannath, Maurizio Ferdinando Pezzoli, Elena Losero, Hossein Babashah, Valentin Luc Adrien Goblot

Monitoring neuronal activity with simultaneously high spatial and temporal resolution in living cell cultures is crucial to advance understanding of the development and functioning of our brain, and to gain further insights in the origin of brain disorders ...

Nature Portfolio2023

Heralded Single-Phonon Preparation, Storage, and Readout in Cavity Optomechanics

Tobias Kippenberg, Christophe Marcel Georges Galland, Nicolas Piro Mastracchio

We show how to use the radiation pressure optomechanical coupling between a mechanical oscillator and an optical cavity field to generate in a heralded way a single quantum of mechanical motion (a Fock state). Starting with the oscillator close to its grou ...

American Physical Society2014

Creation of NV Centers in Diamond under 155 MeV Electron Irradiation

Christophe Marcel Georges Galland, Victor Carle Adrien Boureau, Elena Losero, Hossein Babashah, Valentin Luc Adrien Goblot, Yuchun Zhu

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

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

Christophe Marcel Georges Galland, Claudio Alejandro Jaramillo Concha

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

Measurement-induced collective vibrational quantum coherence under spontaneous Raman scattering in a liquid

Christophe Marcel Georges Galland, Santiago Tarrago Velez, Valeria Vento, Anna Pogrebna

Spontaneous Raman scattering is classically understood as an incoherent process. Here, the authors demonstrate that macroscopic quantum coherence among billions of vibrating molecules in a liquid is generated when single photon detection and single spatio- ...

Nature Research2023

Continuous-wave frequency upconversion with a molecular optomechanical nanocavity

Tobias Kippenberg, Christophe Marcel Georges Galland, Wen Chen, Sachin Suresh Verlekar, Philippe Andreas Rölli, Sakthi Priya Amirtharaj

Coherent upconversion of terahertz and mid-infrared signals into visible light opens new horizons for spectroscopy, imaging, and sensing but represents a challenge for conventional nonlinear optics. Here, we used a plasmonic nanocavity hosting a few hundre ...

American Association for the Advancement of Science2021

Energy correlations of photon pairs generated by a silicon microring resonator probed by Stimulated Four Wave Mixing

Matteo Galli, Christophe Marcel Georges Galland, Davide Grassani

Compact silicon integrated devices, such as micro-ring resonators, have recently been demonstrated as efficient sources of quantum correlated photon pairs. The mass production of integrated devices demands the implementation of fast and reliable techniques ...

Nature Research2016

Data and code associated with the paper 'Measurement-induced collective vibrational quantum coherence under spontaneous Raman scattering in a liquid'

Christophe Marcel Georges Galland, Valeria Vento, Santiago Tarrago Velez, Anna Pogrebna

Data and code associated with the following paper V. Vento, S. Tarrago-Velez et al., Nat. Commun. (2023) A thorough explanation of the experiment performed is available there. The name of each sub-folder and file in CS2_data_code.zip indic ...

Zenodo2023

Microscopic origin of polarization-entangled Stokes-anti-Stokes photons in diamond

Christophe Marcel Georges Galland

Time-correlated Stokes-anti-Stokes (SaS) scattering has been studied in different transparent media, more frequently in diamond. While the nonclassical nature of the SaS scattered photons has been well established, the presence of entanglement in this spon ...

Amer Physical Soc2023

Optically detected magnetic resonance with an open source platform

Christophe Marcel Georges Galland, Mayeul Sylvain Chipaux, Elena Losero, Hossein Babashah, Hoda Shirzad, Valentin Luc Adrien Goblot

Localized electronic spins in solid-state environments form versatile and robust platforms for quantum sensing, metrology and quantum information processing. With optically detected magnetic resonance (ODMR), it is possible to prepare and readout highly co ...

Scipost Foundation2023

Data and code associated with the paper 'Mode-Specific Coupling of Nanoparticle-on-Mirror Cavities with Cylindrical Vector Beams'

Christophe Marcel Georges Galland, Sachin Suresh Verlekar, Valeria Vento, Philippe Andreas Rölli

Data and code associated with the following paper: V. Vento et al, Nano Lett. 2023 A thorough explanation of the experiment performed is available there. The name of each sub-folder and file in Maps_data_code.zip indicates the correspondin ...

Zenodo2023

Two-Color Pump-Probe Measurement of Photonic Quantum Correlations Mediated by a Single Phonon

Vincenzo Savona, Christophe Marcel Georges Galland, Hugo Pierre Alexandre Flayac, Mitchell David Anderson, Santiago Tarrago Velez, Kilian Robert Seibold

We propose and demonstrate a versatile technique to measure the lifetime of the one-phonon Fock state using two-color pump-probe Raman scattering and spectrally resolved, time-correlated photon counting. Following pulsed laser excitation, the n = 1 phonon ...

2018

On-Chip Heralded Single Photon Source with Demultiplexing and Pump Filtering

Christophe Marcel Georges Galland, Davide Grassani

We demonstrate an on-chip source of correlated photons with spatial demultiplex-ing of signal and idler photons via ring resonators and with pump suppression greater than 60 decibels. ...

OSA2014

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

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

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

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

Darin Ali Naushad Merchant, Christophe Marcel Georges Galland, Amirali Arabmoheghi, Claudio Alejandro Jaramillo Concha, Yuchun Zhu

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

Molecular Optomechanics with Plasmons: Backaction at the nanoscale

Tobias Kippenberg, Christophe Marcel Georges Galland, Nicolas Piro Mastracchio

The plasmonic systems used in surface-enhanced Raman scattering are shown to be quivalent to optomechanical cavities. The new backaction force of the plasmon on the molecular vibration could lead to coherent amplification of vibrational motion. ...

OSA2015

Experimental demonstration of broadband Lorentz non-reciprocity in an integrable photonic architecture based on Mach-Zehnder modulators

Christophe Marcel Georges Galland

Lorentz reciprocity is a direct consequence of Maxwell equations governing the propagation of light in passive linear media with symmetric permittivity and permeability tensors. Here, we demonstrate the first active optical isolator and circulator implemen ...

Optical Soc Amer2014