Výsledky vyhledávání - "Cui, Jiafeng"

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CCL: Continual Contrastive Learning for LiDAR Place Recognition

Place recognition is an essential and challenging task in loop closing and global localization for robotics and autonomous driving applications. Benefiting from the recent advances in deep learning techniques, the performance of LiDAR place recogniti

Externí odkaz: http://arxiv.org/abs/2303.13952

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Patch-NetVLAD+: Learned patch descriptor and weighted matching strategy for place recognition

Autor: Cai, Yingfeng, Zhao, Junqiao, Cui, Jiafeng, Zhang, Fenglin, Ye, Chen, Feng, Tiantian

Visual Place Recognition (VPR) in areas with similar scenes such as urban or indoor scenarios is a major challenge. Existing VPR methods using global descriptors have difficulty capturing local specific regions (LSR) in the scene and are therefore pr

Externí odkaz: http://arxiv.org/abs/2202.05738

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DSC: Deep Scan Context Descriptor for Large-Scale Place Recognition

Autor: Cui, Jiafeng, Huang, Tengfei, Cai, Yingfeng, Zhao, Junqiao, Xiong, Lu, Yu, Zhuoping

LiDAR-based place recognition is an essential and challenging task both in loop closure detection and global relocalization. We propose Deep Scan Context (DSC), a general and discriminative global descriptor that captures the relationship among segme

Externí odkaz: http://arxiv.org/abs/2111.13838

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Optimized pulsed sideband cooling and enhanced thermometry of trapped ions

Autor: Rasmusson, A. J., D'Onofrio, Marissa, Xie, Yuanheng, Cui, Jiafeng, Richerme, Philip

Publikováno v: Phys. Rev. A 104, 043108 (2021)

Resolved sideband cooling is a standard technique for cooling trapped ions below the Doppler limit to near their motional ground state. Yet, the most common methods for sideband cooling implicitly rely on low Doppler-cooled temperatures and tightly c

Externí odkaz: http://arxiv.org/abs/2107.11802

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An open-endcap blade trap for radial-2D ion crystals

Autor: Xie, Yuanheng, Cui, Jiafeng, D'Onofrio, Marissa, Rasmusson, A. J., Howell, Stephen W., Richerme, Philip

Publikováno v: Quantum Sci. Technol. 6, 044009 (2021)

We present the design and experimental demonstration of an open-endcap radio frequency trap to confine ion crystals in the radial-two dimensional (2D) structural phase. The central axis of the trap is kept free of obstructions to allow for site-resol

Externí odkaz: http://arxiv.org/abs/2107.03471

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Susceptibility of Trapped-Ion Qubits to Low-Dose Radiation Sources

Autor: Cui, Jiafeng, Rasmusson, A. J., D'Onofrio, Marissa, Xie, Yuanheng, Wolanski, Evangeline, Richerme, Philip

Publikováno v: J. Phys. B: At. Mol. Opt. Phys. 54, 13LT01 (2021)

We experimentally study the real-time susceptibility of trapped-ion quantum systems to small doses of ionizing radiation. We expose an ion-trap apparatus to a variety of $\alpha$, $\beta$, and $\gamma$ sources and measure the resulting changes in tra

Externí odkaz: http://arxiv.org/abs/2105.02753

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Radial two-dimensional ion crystals in a linear Paul trap

Autor: D'Onofrio, Marissa, Xie, Yuanheng, Rasmusson, A. J., Wolanski, Evangeline, Cui, Jiafeng, Richerme, Philip

Publikováno v: Phys. Rev. Lett. 127, 020503 (2021)

We experimentally study two-dimensional (2D) Coulomb crystals in the "radial-2D" phase of a linear Paul trap. This phase is identified by a 2D ion lattice aligned entirely with the radial plane and is created by imposing a large ratio of axial to rad

Externí odkaz: http://arxiv.org/abs/2012.12766

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