Physics-Informed Neural Networks for an optimal counterdiabatic quantum computation

• URL: http://arxiv.org/abs/2309.04434v2
• Date: Wed, 13 Sep 2023 07:32:35 GMT
• Title: Physics-Informed Neural Networks for an optimal counterdiabatic quantum computation
• Authors: Antonio Ferrer-S\'anchez and Carlos Flores-Garrigos and Carlos Hernani-Morales and Jos\'e J. Orqu\'in-Marqu\'es and Narendra N. Hegade and Alejandro Gomez Cadavid and Iraitz Montalban and Enrique Solano and Yolanda Vives-Gilabert and Jos\'e D. Mart\'in-Guerrero
• Abstract summary: We introduce a novel methodology that leverages the strength of Physics-Informed Neural Networks (PINNs) to address the counterdiabatic (CD) protocol in the optimization of quantum circuits comprised of systems with $N_Q$ qubits. The main applications of this methodology have been the $mathrmH_2$ and $mathrmLiH$ molecules, represented by a 2-qubit and 4-qubit systems employing the STO-3G basis.
• Score: 32.73124984242397
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: We introduce a novel methodology that leverages the strength of Physics-Informed Neural Networks (PINNs) to address the counterdiabatic (CD) protocol in the optimization of quantum circuits comprised of systems with $N_{Q}$ qubits. The primary objective is to utilize physics-inspired deep learning techniques to accurately solve the time evolution of the different physical observables within the quantum system. To accomplish this objective, we embed the necessary physical information into an underlying neural network to effectively tackle the problem. In particular, we impose the hermiticity condition on all physical observables and make use of the principle of least action, guaranteeing the acquisition of the most appropriate counterdiabatic terms based on the underlying physics. The proposed approach offers a dependable alternative to address the CD driving problem, free from the constraints typically encountered in previous methodologies relying on classical numerical approximations. Our method provides a general framework to obtain optimal results from the physical observables relevant to the problem, including the external parameterization in time known as scheduling function, the gauge potential or operator involving the non-adiabatic terms, as well as the temporal evolution of the energy levels of the system, among others. The main applications of this methodology have been the $\mathrm{H_{2}}$ and $\mathrm{LiH}$ molecules, represented by a 2-qubit and 4-qubit systems employing the STO-3G basis. The presented results demonstrate the successful derivation of a desirable decomposition for the non-adiabatic terms, achieved through a linear combination utilizing Pauli operators. This attribute confers significant advantages to its practical implementation within quantum computing algorithms.

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