Dec 1 – 3, 2021
America/New_York timezone

Quantum Speedup for Track Reconstruction in Particle Accelerators

Dec 3, 2021, 12:00 PM


Yasser Omar (IT & IST, University of Lisbon & Portuguese Quantum Institute)


To investigate the fundamental nature of matter and its interactions, particles are accelerated to very high energies and collided inside detectors, producing a multitude of other particles that are scattered in all directions. As charged particles traverse the detector, they leave signals of their passage. The problem of track reconstruction is to recover the original trajectories from these signals. This challenging data analysis task will become even more demanding as the luminosity of future accelerators increases, leading to collision events with a more complex structure. We identify four fundamental routines present in every local tracking method and analyse how they scale in the context of a standard tracking algorithm. We show that for some of these routines we can reach a lower computational complexity with quantum search algorithms. To the best of our knowledge, this constitutes the first theoretical proof of a quantum advantage for a state-of-the-art track reconstruction method.

Primary author

Yasser Omar (IT & IST, University of Lisbon & Portuguese Quantum Institute)

Presentation materials