3 years ago

Synthesis of antisymmetric spin exchange interaction and entanglement generation with chiral spin states in a superconducting circuit.

H. Wang, Han Cai, Da Xu, Hui Deng, Shiyao Zhu, Xiaobo Zhu, Dongning Zheng, Wei Feng, Chao Song, Marlan O. Scully, Da-Wei Wang

We have synthesized the anti-symmetric spin exchange interaction (ASI), which is also called the Dzyaloshinskii-Moriya interaction, in a superconducting circuit containing five superconducting qubits connected to a bus resonator, by periodically modulating the transition frequencies of the qubits with different modulation phases. This allows us to show the chiral spin dynamics in three-, four- and five-spin clusters. We also demonstrate a three-spin chiral logic gate and entangle up to five qubits in Greenberger-Horne-Zeilinger states. Our results pave the way for quantum simulation of magnetism with ASI and quantum computation with chiral spin states.

Publisher URL: http://arxiv.org/abs/1712.05261

DOI: arXiv:1712.05261v2

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