Latched Detection of Zeptojoule Spin Echoes with a Kinetic Inductance Parametric Oscillator

• URL: http://arxiv.org/abs/2311.03702v1
• Date: Tue, 7 Nov 2023 03:55:15 GMT
• Title: Latched Detection of Zeptojoule Spin Echoes with a Kinetic Inductance Parametric Oscillator
• Authors: Wyatt Vine, Anders Kringh{\o}j, Mykhailo Savytskyi, Daniel Parker, Thomas Schenkel, Brett C. Johnson, Jeffrey C. McCallum, Andrea Morello, Jarryd J. Pla
• Abstract summary: We operate a detector based on a superconducting microwave resonator. The device indicates the absorption of low-power microwave wavepackets by transitioning to a self-oscillating state. We achieve a latched-readout of the spin signal with an amplitude that is five hundred times greater than the underlying spin echoes.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: When strongly pumped at twice their resonant frequency, non-linear resonators develop a high-amplitude intracavity field, a phenomenon known as parametric self-oscillations. The boundary over which this instability occurs can be extremely sharp and thereby presents an opportunity for realizing a detector. Here we operate such a device based on a superconducting microwave resonator whose non-linearity is engineered from kinetic inductance. The device indicates the absorption of low-power microwave wavepackets by transitioning to a self-oscillating state. Using calibrated wavepackets we measure the detection efficiency with zeptojoule energy wavepackets. We then apply it to measurements of electron spin resonance, using an ensemble of $^{209}$Bi donors in silicon that are inductively coupled to the resonator. We achieve a latched-readout of the spin signal with an amplitude that is five hundred times greater than the underlying spin echoes.

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