Abstract: Integrated sensors have fundamentally revolutionized nearly all electronic systems. How can quantum technology contribute? In this talk, I aim to present recent advances in integrated quantum nonlinear photonics and electromechanics and outline their potential to enhance sensing technologies. I'll start by presenting Stokowski [1] and Park's [2] demonstrations of integrated quantum optical sensors and squeezed light sources in thin-film lithium niobate. These demonstrations show that nonlinear optics integration can enable efficient and deployable quantum enhanced sensors. Such integration can even lead to generation of new opportunities in microcombs which I will briefly touch on [3]. I will then move to our work on developing quantum nanomechanical sensors. I will then present Cleland et al's work [4], where we leverage a superconducting qubit as the back-end of a nanoelectromechanical (NEMS) sensor, and study the interaction between mechanics and their decoherence channels (primarily TLS) at the quantum limit. I will conclude by showing some of our recent work on understanding two-level systems and how they affect the performance of our devices.
References:
[1] Stokowski, Hubert S., et al. "Integrated quantum optical phase sensor in thin film lithium niobate." Nature Communications 14, no. 1 (2023): 3355.
[2] Park, Taewon, et al. "Single-mode squeezed-light generation and tomography with an integrated optical parametric oscillator." Science Advances 10.11 (2024): eadl1814.
[3] Stokowski, Hubert S., et al. "Integrated frequency-modulated optical parametric oscillator." Nature 627.8002 (2024): 95-100.
[4] Cleland, Agnetta Y., et al. "Studying phonon coherence with a quantum sensor." arXiv preprint arXiv:2302.00221 (2023).
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This seminar series is sponsored by CUbit with generous support of the Caruso Foundation.