Error-mitigated photonic variational quantum eigensolver using a single-photon ququart

Autor:	Lee, Donghwa, Lee, Jinil, Hong, Seongjin, Lim, Hyang-Tag, Cho, Young-Wook, Han, Sang-Wook, Shin, Hyundong, Rehman, Junaid ur, Kim, Yong-Su
Rok vydání:	2021
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	We report the experimental resource-efficient implementation of the variational quantum eigensolver (VQE) using four-dimensional photonic quantum states of single-photons. The four-dimensional quantum states are implemented by utilizing polarization and path degrees of freedom of a single-photon. Our photonic VQE is equipped with the quantum error mitigation (QEM) protocol that efficiently reduces the effects of Pauli noise in the quantum processing unit. We apply our photonic VQE to estimate the ground state energy of He--H$^{+}$ cation. The simulation and experimental results demonstrate that our resource-efficient photonic VQE can accurately estimate the bond dissociation curve, even in the presence of large noise in the quantum processing unit. Comment: 16 pages, 8 figures. Comments are welcome
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2109.14244 Zobrazit plný text záznamu View this record from Arxiv