Journal
PHYSICAL REVIEW LETTERS
Volume 129, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.129.107701
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Funding
- Army Research Office [W911NF-18-1-0020]
- NSF EFRI grant [EFMA-1640959]
- NSF Center for Quantum Networks [EEC-1941583]
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This study introduces a nonlinear multimode superconducting electroacoustic system that establishes effective Kerr nonlinearity among multiple acoustic modes at 10 GHz through the interplay between superconducting kinetic inductance and piezoelectric strong coupling. The coherent electroacoustic frequency comb generated by exciting this multimode Kerr system with a single microwave tone provides insight into multimode resonator systems and offers a platform for the dynamic study of microcombs at microwave frequencies.
We present a nonlinear multimode superconducting electroacoustic system, where the interplay between superconducting kinetic inductance and piezoelectric strong coupling establishes an effective Kerr nonlinearity among multiple acoustic modes at 10 GHz that could hardly be achieved via intrinsic mechanical nonlinearity. By exciting this multimode Kerr system with a single microwave tone, we further demonstrate a coherent electroacoustic frequency comb and provide theoretical understanding of multimode nonlinear interaction in the superstrong coupling limit. This nonlinear superconducting electroacoustic system sheds light on the active control of multimode resonator systems and offers an enabling platform for the dynamic study of microcombs at microwave frequencies.
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