Model Predictive Loitering and Trajectory Tracking of Suspended Payloads in Cable-Driven Balloons Using UGVs

Posted by Caltech

Kavli Affiliate: Morteza Gharib | First 5 Authors: Julius Wanner, Eric Sihite, Alireza Ramezani, Morteza Gharib, | Summary: The feasibility of performing airborne and ground manipulation, perception, and reconnaissance using wheeled rovers, unmanned aerial vehicles, CubeSats, SmallSats and more have been evaluated before. Among all of these solutions, balloon-based systems possess merits that make them […]


Continue.. Model Predictive Loitering and Trajectory Tracking of Suspended Payloads in Cable-Driven Balloons Using UGVs

Model Predictive Loitering and Trajectory Tracking of Suspended Payloads in Cable-Driven Balloons Using UGVs

Posted by Caltech

Kavli Affiliate: Morteza Gharib | First 5 Authors: Julius Wanner, Eric Sihite, Alireza Ramezani, Morteza Gharib, | Summary: The feasibility of performing airborne and ground manipulation, perception, and reconnaissance using wheeled rovers, unmanned aerial vehicles, CubeSats, SmallSats and more have been evaluated before. Among all of these solutions, balloon-based systems possess merits that make them […]


Continue.. Model Predictive Loitering and Trajectory Tracking of Suspended Payloads in Cable-Driven Balloons Using UGVs

Towards Understanding and Mitigating Audio Adversarial Examples for Speaker Recognition

Posted by klaurent Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Guangke Chen, Zhe Zhao, Fu Song, Sen Chen, Lingling Fan | Summary: Speaker recognition systems (SRSs) have recently been shown to be vulnerable to adversarial attacks, raising significant security concerns. In this work, we systematically investigate transformation and adversarial training based defenses for securing SRSs. According to […]


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Effects of Laser-Annealing on Fixed-Frequency Superconducting Qubits

Posted by klaurent Berkeley

Kavli Affiliate: Irfan Siddiqi | First 5 Authors: Hyunseong Kim, Christian Jünger, Alexis Morvan, Edward S. Barnard, William P. Livingston | Summary: As superconducting quantum processors increase in complexity, techniques to overcome constraints on frequency crowding are needed. The recently developed method of laser-annealing provides an effective post-fabrication method to adjust the frequency of superconducting […]


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Large-Scale Crosstalk-Corrected Thermo-Optic Phase Shifter Arrays in Silicon Photonics

Posted by Caltech

Kavli Affiliate: Ali Hajimiri | First 5 Authors: Volkan Gurses, Reza Fatemi, Aroutin Khachaturian, Ali Hajimiri, | Summary: We introduce a thermo-optic phase shifter (TOPS) array architecture with independent phase control of each phase shifter for large-scale and high-density photonic integrated circuits with two different control schemes: pulse amplitude modulation (PAM) and pulse width modulation […]


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Anisotropic Gigahertz Antiferromagnetic Resonances of the Easy-Axis van der Waals Antiferromagnet CrSBr

Posted by klaurent Cornell

Kavli Affiliate: Daniel C. Ralph | First 5 Authors: Thow Min Cham, Saba Karimeddiny, Avalon H. Dismukes, Xavier Roy, Daniel C. Ralph | Summary: We report measurements of gigahertz-frequency antiferromagnetic resonances that are anisotropic as a function of the direction of applied magnetic field relative to the crystal axes in the van der Waals easy-axis […]


Continue.. Anisotropic Gigahertz Antiferromagnetic Resonances of the Easy-Axis van der Waals Antiferromagnet CrSBr

Anisotropic Gigahertz Antiferromagnetic Resonances of the Easy-Axis van der Waals Antiferromagnet CrSBr

Posted by klaurent Cornell

Kavli Affiliate: Daniel C. Ralph | First 5 Authors: Thow Min Jerald Cham, Saba Karimeddiny, Avalon H. Dismukes, Xavier Roy, Daniel C. Ralph | Summary: We report measurements of antiferromagnetic resonances in the van der Waals easy-axis antiferromagnet CrSBr. The interlayer exchange field and magnetocrystalline anisotropy fields are comparable to laboratory magnetic fields, allowing a […]


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Viscosity Metamaterials

Posted by klaurent Cornell

Kavli Affiliate: Itai Cohen | First 5 Authors: Prateek Sehgal, Meera Ramaswamy, Edward Y. X. Ong, Christopher Ness, Itai Cohen | Summary: Metamaterials are composite structures whose properties arise from a mesoscale organization of their constituents. Provided this organization occurs on scales smaller than the characteristic lengths associated with their response, it is often possible […]


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Prefix Conditioning Unifies Language and Label Supervision

Posted by klaurent Berkeley

Kavli Affiliate: Xiang Zhang | First 5 Authors: Kuniaki Saito, Kihyuk Sohn, Xiang Zhang, Chun-Liang Li, Chen-Yu Lee | Summary: Vision-language contrastive learning suggests a new learning paradigm by leveraging a large amount of image-caption-pair data. The caption supervision excels at providing wide coverage in vocabulary that enables strong zero-shot image recognition performance. On the […]


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Mechanical dissipation by substrate-mode coupling in SiN resonators

Posted by klaurent Delft

Kavli Affiliate: Simon Groblacher | First 5 Authors: Matthijs H. J. de Jong, Malte A. ten Wolde, Andrea Cupertino, Simon Gröblacher, Peter G. Steeneken | Summary: State-of-the-art nanomechanical resonators are heralded as a central component for next-generation clocks, filters, resonant sensors and quantum technologies. To practically build these technologies will require monolithic integration of microchips, […]


Continue.. Mechanical dissipation by substrate-mode coupling in SiN resonators