Synthesizing Five-Body Interaction in a Superconducting Quantum Circuit
Ke Zhang, Hekang Li, Pengfei Zhang, Jiale Yuan, Jinyan Chen, Wenhui Ren, Zhen Wang, Chao Song, Da-Wei Wang, H. Wang, Shiyao Zhu, Girish S. Agarwal, Marlan O. Scully
DOI 10.1103/PhysRevLett.128.190502 · Physical Review Letters
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Abstract
Synthesizing many-body interaction Hamiltonians is a central task in quantum simulation. However, it is challenging to synthesize Hamiltonians that have more than two spins in a single term. Here we synthesize m-body spin-exchange Hamiltonians with m up to 5 in a superconducting quantum circuit by simultaneously exciting multiple independent qubits with time-energy correlated photons generated from a qudit. The dynamic evolution of the m-body interaction is governed by the Rabi oscillation between two m-spin states, in which the states of each spin are different. We demonstrate the scalability of our approach by comparing the influence of noises on the three-, four- and five-body interaction and building a many-body Mach-Zehnder interferometer which potentially has a Heisenberg-limit sensitivity. This study paves a way for quantum simulation involving many-body interaction Hamiltonians such as lattice gauge theories in quantum circuits.
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