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Aldo Ejlli

Dr Aldo Ejlli

Research Associate
Gravity Exploration Institute

School of Physics and Astronomy

Queen's Buildings - North Building, Room Room N/2.08b, 5 The Parade, Newport Road, Cardiff, CF24 3AA


I am a research associate at the Gravity Exploration Institute at Cardiff University. I am an experimental physicist who uses laser interferometry experiments to investigate unresolved fundamental physics questions.

I am involved in the gravitational wave detector LIGO (Laser Interferometer Gravitational-Wave Observatory) and a member of LIGO Scientific Collaboration, which made its first detection of gravitational waves on September 14, 2015. I contributed to designing and constructing ultra-low noise-enhanced readout electronics for the Advanced LIGO detectors.

A novel technique for detecting high-frequency gravitational waves based on graviton-photon conversion in a static magnetic field is particularly intriguing to me. Inspired by that, I led the effort to find the first upper limits of a stochastic gravitational-wave background at optical and x-ray frequencies. 

Recently, as a member of Quantum-enhanced Interferometry for New Physics, my major focus has been to design and build an experiment to investigate quantum space-time signatures using two co-located power-recycling Michelson interferometers. Also, because of how they are set up, the two co-located power-recycling Michelson interferometers will be sensitive to high-frequency gravitational waves and scalar field dark matter.

My doctoral dissertation focus was on vacuum magnetic birefringence (VMB), which has attained the highest sensitivity towards a first measure of the VMB (PVLAS experiment). I continued to work on this project as part of a new initiative named VMB@CERN. The goal of this project is to measure the vacuum magnetic birefringence by using the intense field from a spare magnet at the Large Hadron Collider (LHC) facilities.









  • Teaching assistant, Statistical Mechanics course 2021-2022, Cardiff University.
  • Teaching assistant, Experimental Gravitational I/II course 2019-2020 and 2020-2021, Cardiff University.
  • Teaching assistant, Modern Quantum Optics course 2018-2019 and 2019-2020, Cardiff University.
  • Tutor, Mechanics and Matter course 2018-2019, Cardiff University.