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@arXiv_physicsoptics_bot@mastoxiv.page
2025-06-06 07:35:35

Spherical Phase Metalenses: Intrinsic Suppression of Spherical Aberration via Equiphase Surface Modulation
Xiaohui Yang, Lei Yang, Xinhui Lu, Yu Guo
https://arxiv.org/abs/2506.05228

Spherical Phase Metalenses: Intrinsic Suppression of Spherical Aberration via Equiphase Surface Modulation
Recent progress in large-scale metasurfaces requires phase profiles beyond traditional hyperbolic designs. We show hyperbolic phase distributions cause spherical aberration from mismatched light propagation geometry and unrealistic phase assumptions. By analyzing metalens fundamentals via isophase surfaces, we develop a spherical phase profile based on spherical wavefront theory. This method prevents spherical aberration, essential for wide-aperture metalenses. Simulations prove superior focusi…

@arXiv_csLG_bot@mastoxiv.page
2025-06-05 10:56:37

This https://arxiv.org/abs/2505.14884 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLG_…

Polar Sparsity: High Throughput Batched LLM Inferencing with Scalable Contextual Sparsity
Accelerating large language model (LLM) inference is critical for real-world deployments requiring high throughput and low latency. Contextual sparsity, where each token dynamically activates only a small subset of the model parameters, shows promise but does not scale to large batch sizes due to union of active neurons quickly approaching dense computation. We introduce Polar Sparsity, highlighting a key shift in sparsity importance from MLP to Attention layers as we scale batch size and seque…

@arXiv_csIT_bot@mastoxiv.page
2025-06-06 07:18:48

Sparse Phase Retrieval with Redundant Dictionary via $\ell_q (0<q\le 1)$-Analysis Model
Haiye Huo, Li Xiao
https://arxiv.org/abs/2506.04576 https://

Sparse Phase Retrieval with Redundant Dictionary via $\ell_q (0
Sparse phase retrieval with redundant dictionary is to reconstruct the signals of interest that are (nearly) sparse in a redundant dictionary or frame from the phaseless measurements via the optimization models. Gao [7] presented conditions on the measurement matrix, called null space property (NSP) and strong dictionary restricted isometry property (S-DRIP), for exact and stable recovery of dictionary-$k$-sparse signals via the $\ell_1$-analysis model for sparse phase retrieval with redundant …

@karlauerbach@sfba.social
2025-06-05 17:36:42

Well, this seems stupid - New Jersey is forcing the removal of many working NACS charging centers and replacing them with CCS charging.
That's already stupid. But it moves from stupid to destructive in that it NJ wants to expand the moribund CCS charge system while automobile makers are shifting away from CCS to NACS.
Perhaps we ought to remember that New Jersey is a major oil refining/gasoline producing state and thus there are political forces in NJ who abhor EVs.

Tesla is forced to remove 64 Superchargers on NJ Turnpike, Musk claims ‘corruption’
Tesla is being forced to remove 64 Superchargers at stations along the New Jersey Turnpike as the local authorities have...

@cowboys@darktundra.xyz
2025-06-05 18:09:48

League-altering Cowboys-Ravens trade pitch sends $24 million superstar to Baltimore https://www.sportingnews.com/us/nfl/baltimore-ravens/news/league-altering-cowboys-ravens…

League-altering Cowboys-Ravens trade pitch sends $24 million superstar to Baltimore
A league-altering trade pitch between the Dallas Cowboys and Baltimore Ravens sends an All-Pro player to John Harbaugh's squad.

@arXiv_condmatsuprcon_bot@mastoxiv.page
2025-06-06 07:30:53

Nonreciprocal superconducting critical currents with normal state field trainability in kagome superconductor CsV3Sb5
Jun Ge, Xiaoqi Liu, Pinyuan Wang, Haowen Pang, Qiangwei Yin, Hechang Lei, Ziqiang Wang, Jian Wang
https://arxiv.org/abs/2506.04601

Nonreciprocal superconducting critical currents with normal state field trainability in kagome superconductor CsV3Sb5
Determining time-reversal symmetry (TRS) and chirality in the superconducting state and its relation to the symmetry and topology in the normal state are important issues in modern condensed matter physics. Here, we report the observation of nonreciprocal superconducting critical currents (Ic) at zero applied magnetic field: Ic exhibits different values in opposite directions, in both flakes and micro-bridges of the kagome superconductor CsV3Sb5. Such spontaneous nonreciprocity requires TRS and…

@arXiv_csIT_bot@mastoxiv.page
2025-06-05 07:19:40

Stable recovery of complex dictionary-sparse signals from phaseless measurements
Lianxing Xia, Haiye Huo
https://arxiv.org/abs/2506.03961 https://

Stable recovery of complex dictionary-sparse signals from phaseless measurements
Dictionary-sparse phase retrieval, which is also known as phase retrieval with redundant dictionary, aims to reconstruct an original dictionary-sparse signal from its measurements without phase information. It is proved that if the measurement matrix $A$ satisfies null space property (NSP)/strong dictionary restricted isometry property (S-DRIP), then the dictionary-sparse signal can be exactly/stably recovered from its magnitude-only measurements up to a global phase. However, the S-DRIP holds …

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