Speaker
Description
LUXE (Laser Und XFEL Experiment) is a proposed experiment at DESY using the electron beam of the European XFEL and a high-
intensity laser. The experiment’s primary aim is to investigate the transition from the well-probed perturbative to the non-perturbative Quantum Electrodynamics regime.
In LUXE, positrons are generated and directed towards a four-layered silicon pixel detector, with occupancies of up to 100 hits/mm2 for the initial phase. Reconstructing tracks from a substantial set of hits poses a significant challenge for classical computers.
To address this challenge, we adopt a novel approach based on formulating the track pattern recognition task as a quadratic unconstrained binary optimisation (QUBO) problem. This formulation allows the problem to be solved with a quantum annealer. Classically, the expected performance of a quantum annealer for QUBO problems can be studied using Simulated Annealing. In this talk, a comprehensive study of various aspects of the problem, including QUBO encoding, algorithm scalability and tracking performance, will be given using DWAVE’s annealing simulator. The results will be compared to classical track reconstruction using the Combinatorial Kalmann Filter and to results using Qiskits gate-based quantum computing simulator.
