Demonstration of tunable three-body interactions between superconducting qubits
Abstract
Nonpairwise multi-qubit interactions present a useful resource for quantum information processors. Their implementation would facilitate more efficient quantum simulations of molecules and combinatorial optimization problems, and they could simplify error suppression and error correction schemes. Here we present a superconducting circuit architecture in which a coupling module mediates 2-local and 3-local interactions between three flux qubits by design. The system Hamiltonian is estimated via multi-qubit pulse sequences that implement Ramsey-type interferometry between all neighboring excitation manifolds in the system. The 3-local interaction is coherently tunable over several MHz via the coupler flux biases and can be turned off, which is important for applications in quantum annealing, analog quantum simulation, and gate-model quantum computation.
Keywords
Cite
@article{arxiv.2205.04542,
title = {Demonstration of tunable three-body interactions between superconducting qubits},
author = {Tim Menke and William P. Banner and Thomas R. Bergamaschi and Agustin Di Paolo and Antti Vepsäläinen and Steven J. Weber and Roni Winik and Alexander Melville and Bethany M. Niedzielski and Danna Rosenberg and Kyle Serniak and Mollie E. Schwartz and Jonilyn L. Yoder and Alán Aspuru-Guzik and Simon Gustavsson and Jeffrey A. Grover and Cyrus F. Hirjibehedin and Andrew J. Kerman and William D. Oliver},
journal= {arXiv preprint arXiv:2205.04542},
year = {2022}
}
Comments
14 pages, 11 figures