Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Quantum Diamond Magnetometry for High Pressure Superconductivity

Antoine Hilberer, Loïc Toraille, Baptiste Vindolet, Cassandra Dailledouze, Liam Hanlon, Marie‐Pierre Adam, Martin P. Schmidt, Paul Loubeyre, Jean-François Roch

Published Jul 16, 2022• 0 citations
OpenAlex

Related papers

Probing high-pressure superconductivity with diamond quantum sensing

Jean-François Roch, Antoine Hilberer, Loïc Toraille +4 more

•May 15, 2022•0 citations

High-resolution scanning magnetometry based on a superconducting quantum interferometer

Sergey A. Gudoshnikov, L.V. Matveets, V. V. Migulin +2 more

Journal of Communications Technology and Electronics•Jan 1, 2001•0 citations

High-dynamic-range magnetometry with a single nuclear spin in diamond

G. Waldherr, Johannes Beck, Philipp Neumann +7 more

Nature Nanotechnology•Dec 18, 2011•156 citations

High-dynamic-range magnetometry with a single electronic spin in diamond

Naufer Nusran, M. Ummal Momeen, M. V. Gurudev Dutt

Nature Nanotechnology•Dec 18, 2011•83 citations

Development of wide-field magnetic imaging at high pressure and low temperature with diamond quantum sensor

Kenshin URIU, Ryotaro Suda, K. Yamamoto +4 more

Recently, superconductivity under high pressure in hydrogen-rich compounds, such as H3S (Tc=203K at 150 GPa) and LaH10 (Tc=253K at 200 GPa), has attracted extensive research interest due to their high superconducting transition temperatures (Tc). However, magnetic measurements of these materials are significantly challenging in terms of sensitivity and spatial resolution. Consequently, magnetometry under high pressure using nitrogen-vacancy (NV) centers has recently begun to be implemented. The NV center is a promising sensor and is expected to overcome this problem because of its properties, including its size and measurement principles. In this article, we conducted wide-field magnetic imaging using NV centers at low temperatures and pressures of several GPa. The details of the developed measurement system and its application to a cuprate superconductor are demonstrated. By employing our method, the visualization of the Meissner effect in hydride superconductors is anticipated.

High Pressure Research•Apr 1, 2026•0 citations

Capteurs quantiques pour la recherche de supraconducteurs à haute pression

Antoine Hilberer

When high static pressure is applied to a material, the arrangement of its atoms and electrons can dramatically change to allow higher density, thus leading to the creation of new phases or modifying electronic and magnetic properties of solids. Pressures of tens of kilobars (gigapascals) or even megabars can be achieved in laboratories using Diamond Anvil Cells (DACs), at the expense of working with samples of minute size. Recent studies have claimed to have uncovered materials, super-hydrides, retaining superconductivity close to room temperature under extreme pressure conditions. However, performing reliable measurements of the hallmarks of superconductivity on these samples synthesized at high-pressure is remarkably challenging, sometimes leading to controversial results. In this thesis, we chose to pursue the development of a new high-pressure optical magnetic measurement method based on the adaptation of a mature quantum technology to the DAC: Nitrogen-Vacancy (NV) centers of diamond. We fabricate ensembles of these color centers inside the tip of a diamond anvil, using them as local quantum magnetic probes based on their spin-dependent photoluminescence properties. We show that NV centers can be used to spatially map the Meissner effect in the presence of a cuprate superconductor at high pressure and record the sample's critical temperature evolution with pressure up to 31 GPa. We then systematically study the NV centers' magnetic sensing capabilities at high pressure, identifying non-hydrostatic anvil stress as a limitation above 40 to 50 GPa. Finally, we propose an anvil micro-structuring strategy lifting this constraint and enabling efficient NV magnetometry at least up to 130 GPa, paving the way toward a future settlement of the super-hydride dispute by this new diagnosis method.

•Dec 15, 2022•0 citations
Recently, superconductivity under high pressure in hydrogen-rich compounds, such as H3S (Tc=203K at 150 GPa) and LaH10 (Tc=253K at 200 GPa), has attracted extensive research interest due to their high superconducting transition temperatures (Tc). However, magnetic measurements of these materials are significantly challenging in terms of sensitivity and spatial resolution. Consequently, magnetometry under high pressure using nitrogen-vacancy (NV) centers has recently begun to be implemented. The NV center is a promising sensor and is expected to overcome this problem because of its properties, including its size and measurement principles. In this article, we conducted wide-field magnetic imaging using NV centers at low temperatures and pressures of several GPa. The details of the developed measurement system and its application to a cuprate superconductor are demonstrated. By employing our method, the visualization of the Meissner effect in hydride superconductors is anticipated.
When high static pressure is applied to a material, the arrangement of its atoms and electrons can dramatically change to allow higher density, thus leading to the creation of new phases or modifying electronic and magnetic properties of solids. Pressures of tens of kilobars (gigapascals) or even megabars can be achieved in laboratories using Diamond Anvil Cells (DACs), at the expense of working with samples of minute size. Recent studies have claimed to have uncovered materials, super-hydrides, retaining superconductivity close to room temperature under extreme pressure conditions. However, performing reliable measurements of the hallmarks of superconductivity on these samples synthesized at high-pressure is remarkably challenging, sometimes leading to controversial results. In this thesis, we chose to pursue the development of a new high-pressure optical magnetic measurement method based on the adaptation of a mature quantum technology to the DAC: Nitrogen-Vacancy (NV) centers of diamond. We fabricate ensembles of these color centers inside the tip of a diamond anvil, using them as local quantum magnetic probes based on their spin-dependent photoluminescence properties. We show that NV centers can be used to spatially map the Meissner effect in the presence of a cuprate superconductor at high pressure and record the sample's critical temperature evolution with pressure up to 31 GPa. We then systematically study the NV centers' magnetic sensing capabilities at high pressure, identifying non-hydrostatic anvil stress as a limitation above 40 to 50 GPa. Finally, we propose an anvil micro-structuring strategy lifting this constraint and enabling efficient NV magnetometry at least up to 130 GPa, paving the way toward a future settlement of the super-hydride dispute by this new diagnosis method.