Synthesizing five-body interaction in a superconducting quantum circuit
Abstract
Synthesizing many-body interaction Hamiltonian is a central task in quantum simulation. However, it is challenging to synthesize interactions including more than two spins. Borrowing tools from quantum optics, we synthesize five-body spin-exchange interaction in a superconducting quantum circuit by simultaneously exciting four independent qubits with time-energy correlated photon quadruples generated from a qudit. During the dynamic evolution of the five-body interaction, a Greenberger-Horne-Zeilinger state is generated in a single step with fidelity estimated to be . We compare the influence of noise on the three-, four- and five-body interaction as a step toward answering the question on the quantum origin of chiral molecules. We also demonstrate a many-body Mach-Zehnder interferometer which potentially has a Heisenberg-limit sensitivity. This study paves a way for quantum simulation involving many-body interactions and high excited states of quantum circuits.
Cite
@article{arxiv.2109.00964,
title = {Synthesizing five-body interaction in a superconducting quantum circuit},
author = {Ke Zhang and Hekang Li and Pengfei Zhang and Jiale Yuan and Jinyan Chen and Wenhui Ren and Zhen Wang and Chao Song and Da-Wei Wang and H. Wang and Shiyao Zhu and Girish S. Agarwal and Marlan O. Scully},
journal= {arXiv preprint arXiv:2109.00964},
year = {2022}
}
Comments
6 pages, 3 figures