Inducing strong non-linearities in a phonon trapping quartz Bulk Acoustic Wave resonator coupled to a superconducting Quantum Interference Device

Maxim Goryachev; Eugene N. Ivanov; Serge Galliou; Michael E. Tobar

doi:10.3390/app8040602

Inducing strong non-linearities in a phonon trapping quartz Bulk Acoustic Wave resonator coupled to a superconducting Quantum Interference Device

Maxim Goryachev, Eugene N. Ivanov, Serge Galliou, Michael E. Tobar

School of Physics, Mathematics and Computing

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A quartz Bulk Acoustic Wave resonator is designed to coherently trap phonons in such a way that they are well confined and immune to suspension losses so they exhibit extremely high acoustic Q-factors at low temperature, with Q × f products of order 10¹⁸ Hz. In this work we couple such a resonator to a Superconducting Quantum Interference Device (SQUID) amplifier and investigate effects in the strong signal regime. Both parallel and series connection topologies of the system are investigated. The study reveals significant non-Duffing response that is associated with the nonlinear characteristics of Josephson junctions. The nonlinearity provides quasi-periodic structure of the spectrum in both incident power and frequency. The result gives an insight into the open loop behaviour of a future Cryogenic Quartz Oscillator in the strong signal regime.

Original language	English
Article number	602
Journal	Applied Sciences (Switzerland)
Volume	8
Issue number	4
DOIs	https://doi.org/10.3390/app8040602
Publication status	Published - 11 Apr 2018

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title = "Inducing strong non-linearities in a phonon trapping quartz Bulk Acoustic Wave resonator coupled to a superconducting Quantum Interference Device",

abstract = "A quartz Bulk Acoustic Wave resonator is designed to coherently trap phonons in such a way that they are well confined and immune to suspension losses so they exhibit extremely high acoustic Q-factors at low temperature, with Q × f products of order 1018 Hz. In this work we couple such a resonator to a Superconducting Quantum Interference Device (SQUID) amplifier and investigate effects in the strong signal regime. Both parallel and series connection topologies of the system are investigated. The study reveals significant non-Duffing response that is associated with the nonlinear characteristics of Josephson junctions. The nonlinearity provides quasi-periodic structure of the spectrum in both incident power and frequency. The result gives an insight into the open loop behaviour of a future Cryogenic Quartz Oscillator in the strong signal regime.",

keywords = "BAW resonator, Low noise oscillator, Non-linear coupling, Phonon trapping, SQUID",

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AU - Galliou, Serge

AU - Tobar, Michael E.

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AB - A quartz Bulk Acoustic Wave resonator is designed to coherently trap phonons in such a way that they are well confined and immune to suspension losses so they exhibit extremely high acoustic Q-factors at low temperature, with Q × f products of order 1018 Hz. In this work we couple such a resonator to a Superconducting Quantum Interference Device (SQUID) amplifier and investigate effects in the strong signal regime. Both parallel and series connection topologies of the system are investigated. The study reveals significant non-Duffing response that is associated with the nonlinear characteristics of Josephson junctions. The nonlinearity provides quasi-periodic structure of the spectrum in both incident power and frequency. The result gives an insight into the open loop behaviour of a future Cryogenic Quartz Oscillator in the strong signal regime.

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Inducing strong non-linearities in a phonon trapping quartz Bulk Acoustic Wave resonator coupled to a superconducting Quantum Interference Device

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