在最近引起媒体和公众高度关注的欧美系列银行倒闭接管、并购重组事件中,掀起大西洋风暴的是一只名叫“硅谷银行”的“蝴蝶”。美国硅谷银行(Silicon Valley Bank,SVB)于1983年在美国硅谷成立。这家连续5年蝉联《福布斯》杂志“美国最...在最近引起媒体和公众高度关注的欧美系列银行倒闭接管、并购重组事件中,掀起大西洋风暴的是一只名叫“硅谷银行”的“蝴蝶”。美国硅谷银行(Silicon Valley Bank,SVB)于1983年在美国硅谷成立。这家连续5年蝉联《福布斯》杂志“美国最佳银行”的美国第16大银行,在遭到储户挤提48小时内宣布倒闭,成为美国历史上继次贷危机期间倒闭的华盛顿互惠银行后的第二大银行倒闭案。那么,硅谷银行究竟是一家怎样的银行?展开更多
Orbital angular momentum(OAM)holography has become a promising technique in information encryption,data storage and opto-electronic computing,owing to the infinite topological charge of one single OAM mode and the ort...Orbital angular momentum(OAM)holography has become a promising technique in information encryption,data storage and opto-electronic computing,owing to the infinite topological charge of one single OAM mode and the orthogonality of different OAM modes.In this paper,we propose a novel OAM hologram generation method based on a densely connected U-net(DCU),where the densely connected convolution blocks(DCB)replace the convolution blocks of the U-net.Importantly,the reconstruction process of the OAM hologram is integrated into DCU as its output layer,so as to eliminate the requirement to prepare training data for the OAM hologram,which is required by conventional neural networks through an iterative algorithm.The experimental and simulation results show that the OAM hologram can rapidly be generated with the well-trained DCU,and the reconstructed image's quality from the generated OAM hologram is significantly improved in comparison with those from the Gerchberg-Saxton generation method,the Gerchberg-Saxton based generation method and the U-net method.In addition,a 10-bit OAM multiplexing hologram scheme is numerically demonstrated to have a high capacity with OAM hologram.展开更多
文摘在最近引起媒体和公众高度关注的欧美系列银行倒闭接管、并购重组事件中,掀起大西洋风暴的是一只名叫“硅谷银行”的“蝴蝶”。美国硅谷银行(Silicon Valley Bank,SVB)于1983年在美国硅谷成立。这家连续5年蝉联《福布斯》杂志“美国最佳银行”的美国第16大银行,在遭到储户挤提48小时内宣布倒闭,成为美国历史上继次贷危机期间倒闭的华盛顿互惠银行后的第二大银行倒闭案。那么,硅谷银行究竟是一家怎样的银行?
基金supported by the National Natural Science Foundation of China(Grant Nos.62375140 and 61871234)the Open Research Fund of National Laboratory of Solid State Microstructures(Grant No.M36055).
文摘Orbital angular momentum(OAM)holography has become a promising technique in information encryption,data storage and opto-electronic computing,owing to the infinite topological charge of one single OAM mode and the orthogonality of different OAM modes.In this paper,we propose a novel OAM hologram generation method based on a densely connected U-net(DCU),where the densely connected convolution blocks(DCB)replace the convolution blocks of the U-net.Importantly,the reconstruction process of the OAM hologram is integrated into DCU as its output layer,so as to eliminate the requirement to prepare training data for the OAM hologram,which is required by conventional neural networks through an iterative algorithm.The experimental and simulation results show that the OAM hologram can rapidly be generated with the well-trained DCU,and the reconstructed image's quality from the generated OAM hologram is significantly improved in comparison with those from the Gerchberg-Saxton generation method,the Gerchberg-Saxton based generation method and the U-net method.In addition,a 10-bit OAM multiplexing hologram scheme is numerically demonstrated to have a high capacity with OAM hologram.
