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Quantum Search Grover Algorithm at CERN

By IQT News posted 20 Nov 2020

(CERN) CERN scientists have demonstrated a novel method for applying a scientific quantum algorithm – the Grover Algorithm (GA) – to search for rare events in proton-proton collisions at 13 TeV collision energy using CERN’s Large Hadron Collider. The search is of an unsorted database from the ATLAS detector in the form of ATLAS Open Data.
As indicated by the Higgs boson decay channel H→ZZ∗→4l, the detection of four leptons in one event may be used to reconstruct the Higgs boson and, more importantly, evince Higgs boson decay to some new phenomena, such as H→ZZd→4l. In searching the dataset for collisions resulting in the detection of four leptons, the study demonstrates the effectiveness and potential of applying quantum computing to high-energy particle physics. Using a Jupyter Notebook, a classical simulation of GA, and multiple quantum com
The implementation of the method on several classical simulators and on several of IBM’s quantum computers using the IBM Qiskit Open Source Software exhibits the promising prospects of quantum computing in high-energy physics.

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