Local Hamiltonian decomposition and classical simulation of parametrized quantum circuits

التفاصيل البيبلوغرافية
العنوان: Local Hamiltonian decomposition and classical simulation of parametrized quantum circuits
المؤلفون: Adhikari, Bibhas, Jha, Aryan
سنة النشر: 2024
المجموعة: Computer Science
Quantum Physics
مصطلحات موضوعية: Quantum Physics, Computer Science - Symbolic Computation
الوصف: In this paper we develop a classical algorithm of complexity $O(K \, 2^n)$ to simulate parametrized quantum circuits (PQCs) of $n$ qubits, where $K$ is the total number of one-qubit and two-qubit control gates. The algorithm is developed by finding $2$-sparse unitary matrices of order $2^n$ explicitly corresponding to any single-qubit and two-qubit control gates in an $n$-qubit system. Finally, we determine analytical expression of Hamiltonians for any such gate and consequently a local Hamiltonian decomposition of any PQC is obtained. All results are validated with numerical simulations.
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2401.13156
رقم الأكسشن: edsarx.2401.13156
قاعدة البيانات: arXiv