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Point-like defects in wide bandgap materials

Contact : Anaïs DREAU and Guillaume CASSABOIS

Atomic-like systems in solids are at the heart of a broad range of emerging quantum applications, from quantum information science to highly sensitive quantum sensing. One prominent platform in this context is based on point-like defects in wide bandgap materials. Such defects may encompass charge, orbital and spin degrees of freedom. In particular, their spin degree of freedom may be optically accessible and controllable, while featuring record coherence times in the solid-state even at room temperature. These spin qubits have already enabled the implementation of elaborate quantum protocols andquantum probes.

Our research scope focuses on the physics of such point-like defects and associated spins in various wide bandgap materials including diamond,  hBN, Silicon and SiC, offering expanded range of functionalities for quantum technologies.

            Defects in hBN

Array of NV defects in diamond

Some recent publications

Optical properties of an ensemble of G-centers in silicon
C. Beaufils, W. Redjem, E. Rousseau, V. Jacques, A. Yu. Kuznetsov, C. Raynaud, C. Voisin, A. Benali, T. Herzig, S. Pezzagna, J. Meijer, M. Abbarchi, and G. Cassabois
Phys. Rev. B 96, 035303 (2018)

Stimulated Raman adiabatic control of a nuclear spin in diamond
R. Coto, V. Jacques, G. Hétet, and J. R. Maze
Phys. Rev. B 96, 085420 (2017)

Efficient single photon emission from a high-purity hexagonal boron nitride crystal
L. J. Martínez, T. Pelini, V. Waselowski, J. R. Maze, B. Gil, G. Cassabois, and V. Jacques
Phys. Rev. B 94, 121405(R) (2016) - Rapid Communication

Coherent population trapping of a single nuclear spin under ambient conditions
P. Jamonneau, G. Hétet, A. Dréau, J.-F. Roch and V. Jacques
Phys. Rev. Lett. 116, 043603 (2016) - Selected as Editor suggestion
Highlighted in Nature Physics, see News and Views by Y. Kubo

Competition between electric field and magnetic field noise in the decoherence of a single spin in diamond
P. Jamonneau, M. Lesik, J. P. Tetienne, I. Alvizu, L. Mayer, A. Dréau, S. Kosen, J.-F. Roch, S. Pezzagna, J. Meijer, T. Teraji, Y. Kubo, P. Bertet, J. R. Maze, and V. Jacques
Phys. Rev. B 93, 024305 (2016)


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