Xavier Rojas

Xavier Rojas is a Royal Society University Research Fellow and Proleptic Lecturer in the Department of Physics at Royal Holloway, University of London. He holds a doctorate from École Normale Supérieure (2011) and completed postdoctoral research at the University of Alberta (2012–2015) and Royal Holloway (2015–2016). His research focuses on three main areas: Superfluid Optomechanics, Topological Superfluidity, and Nano-Electro-Mechanical Systems (NEMS). He leads projects such as SquBa (EPSRC-funded) and the QUEST-DMC collaboration (STFC-funded), exploring quantum technologies and dark matter detection. His work integrates nanofluidics, low-temperature physics, and quantum mechanics.

Education: PhD in Physics, École Normale Supérieure (2011); Postdoctoral Fellowships at University of Alberta (2012–2015) and Royal Holloway (2015–2016).

Research Interests:

• Superfluid Optomechanics: Developing cavity optomechanical systems using superfluid helium in nanofluidic resonators to probe quantum limits.
• Topological Superfluidity: Studying helium-3 in nanoscale geometries to model topological quantum matter.
• NEMS: Designing ultra-sensitive mechanical probes for quantum regimes and quantum fluid studies.

Recent Articles: Focus on superfluid dynamics, dark matter detection via superfluid bolometers, and optomechanical systems. Key contributions include quasi-two-dimensional superfluid phases and ambient-temperature optomechanical transparency.

Awards: Royal Society University Research Fellowship (2016–present).

Grants & Advising: Principal Investigator for projects like Superfluid Optomechanics for Quantum Sensing (Royal Society, 2022–2025). Collaborates widely, including with the QUEST-DMC consortium.

Labs/Teams: Leads the Xavier Rojas Lab (www.xrojaslab.org), specializing in ultra-low temperature quantum systems and nanofluidics.