Regensburg 2022 – scientific programme

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QI: Fachverband Quanteninformation

QI 10: Quantum Simulation and Many-Body Systems

QI 10.8: Talk

Thursday, September 8, 2022, 11:45–12:00, H9

Digital quantum simulation of the BCS model with a central-spin-like quantum processor — •Jannis Ruh, Regina Finsterhoelzl, and Guido Burkard — University of Konstanz, Konstanz, Germany

The simulation of quantum systems is one of the most promising applications of quantum computers. We present a quantum algorithm to perform digital quantum simulations of the Bardeen-Cooper-Schrieffer (BCS) superconductivity model on a quantum register with a star shaped connectivity map, as it is, e.g., featured by color centers in diamond. We show how to effectively translate the problem onto the quantum computer and implement the algorithm using only the native interactions between the qubits. Furthermore, we use the algorithm to simulate the dynamics of the BCS model by subjecting its mean-field ground state to a time-dependent perturbation. The quantum simulation algorithm is studied using a classically simulated quantum computer.