{"id":122,"date":"2023-07-04T09:29:32","date_gmt":"2023-07-04T09:29:32","guid":{"rendered":"https:\/\/quantumdevices.fr\/?page_id=122"},"modified":"2023-08-25T12:14:37","modified_gmt":"2023-08-25T12:14:37","slug":"fiber-fabry-perot-microcavities","status":"publish","type":"page","link":"https:\/\/quantumdevices.fr\/index.php\/technologies\/fiber-fabry-perot-microcavities\/","title":{"rendered":"FFPs: Fiber Fabry-Perot microcavities"},"content":{"rendered":"
\n
\"\"<\/figure>\n<\/div>\n\n\n

Progress in quantum technologies critically depends on the progress of optical cavities. This has spurred the development of optical microcavities. Our group has developed a fiber-based Fabry-Perot microcavity (FFP)<\/a> with exceptional properties. Its laser machined-mirrors enable extremely high finesse (F>100.000), combined with microscopic waist and mode volume. Moreover, our FFPs are fiber coupled by design and feature open access to the optical mode. With these unique properties, they are having a large impact in quantum technologies and beyond<\/a>. Originally designed for our experiments on high-fidelity atomic qubit detection<\/a> and cavity QED with Bose-Einstein condensates<\/a>, FFPs have been adopted by dozens of research laboratories, with many of whom we collaborate. They have been combined with virtually all quantum emitters, ranging from ultracold atoms and ions<\/a> to diamond NV centers<\/a>, quantum dots<\/a> and carbon nanotubes<\/a>, and are used for cavity optomecanics with nanorods<\/a>, membranes<\/a>, and now superfluid helium<\/a>. They have been used in a miniature Raman spectrometer<\/a>, and have given rise to a new form of scanning probe microscopy<\/a>. In our own research, we currently use them for spin squeezing in atomic clocks and quantum simulations with long-range interactions, and we are developing a miniature greenhouse gas analyzer in collaboration with the startup company Mirega<\/a>.<\/p>\n\n\n\n

<\/p>\n\n\n