Synthesizing three-body interaction of spin chirality with superconducting qubits

• URL: http://arxiv.org/abs/2002.01951v1
• Date: Wed, 5 Feb 2020 19:06:05 GMT
• Title: Synthesizing three-body interaction of spin chirality with superconducting qubits
• Authors: Wuxin Liu, Wei Feng, Wenhui Ren, Da-Wei Wang, and Haohua Wang
• Abstract summary: We propose and experimentally synthesize the three-body spin-chirality interaction in a superconducting circuit based on Floquet engineering. Our result is a step toward engineering dynamical and many-body interactions in multiqubit superconducting devices.
• Score: 10.567608076469087
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Superconducting qubits provide a competitive platform for quantum simulation of complex dynamics that lies at the heart of quantum many-body systems, because of the flexibility and scalability afforded by the nature of microfabrication. However, in a multiqubit device, the physical form of couplings between qubits is either an electric (capacitor) or magnetic field (inductor), and the associated quadratic field energy determines that only two-body interaction in the Hamiltonian can be directly realized. Here we propose and experimentally synthesize the three-body spin-chirality interaction in a superconducting circuit based on Floquet engineering. By periodically modulating the resonant frequencies of the qubits connected with each other via capacitors, we can dynamically turn on and off qubit-qubit couplings, and further create chiral flows of the excitations in the three-qubit circular loop. Our result is a step toward engineering dynamical and many-body interactions in multiqubit superconducting devices, which potentially expands the degree of freedom in quantum simulation tasks.

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