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Author(s): Kate L. Fenwick, Frédéric Bouchard, Guillaume Thekkadath, Philip J. Bustard, Duncan England, and Benjamin J. Sussman Researchers can adjust the frequency and bandwidth of single photons inside an optical fiber, which will be useful for future quantum networks. [Phys. Rev. Lett. 136, 090803] Published Fri Mar 06, 2026

Author(s): Tianyi Ouyang, Erfu Liu, Soonyoung Cha, Rukai Cang, Raj Kumar Paudel, Yiyang Sun, Zhaoran Xu, Takashi Taniguchi, Kenji Watanabe, Nathaniel M. Gabor, Yia-Chung Chang, and Chun Hung Lui Bilayer WSe2 hosts bright interlayer A and B excitons even when separated by ~300 meV from intralayer excitons, a regime where conventional exciton hybridization models fail. [Phys. Rev. Lett. 136, 096903] Published Fri Mar 06, 2026

Author(s): Benoît Ferté, Davide Farci, and Xiangyu Cao An analysis of a quantum-to-classical transition reveals two distinct notions of classicality. [Phys. Rev. Lett. 136, 090404] Published Thu Mar 05, 2026

Author(s): Muhammed Irshad P., Pallavi Bhat, Kandaswamy Subramanian, and Anvar Shukurov A coordinate transformation devised for an expanding universe leads to new insights into how a collapsing protogalaxy acquires a large magnetic field. [Phys. Rev. Lett. 136, 091201] Published Thu Mar 05, 2026

Author(s): Victor P. Pasko, Sebastien Celestin, and Anne Bourdon Electrons accelerated to relativistic speeds in a dielectric material can produce bursts of x rays, similar to a phenomenon found in thunderstorms. [Phys. Rev. Lett. 136, 095301] Published Thu Mar 05, 2026

Author(s): Bijuan Chen, Yuhao Gu, Dong Wang, Dexi Shao, Wen Deng, Xin Han, Meiling Jin, Jing Song, Yu Zeng, Hirofumi Ishii, Yen-Fa Liao, Dongzhou Zhang, Jianbo Zhang, Youwen Long, Jinlong Zhu, Liuxiang Yang, Hong Xiao, Jia-cai Nie, Youguo Shi, Changqing Jin, Jiangping Hu, Ho-kwang Mao, and Yang Ding CuIr2S4 becomes a bulk superconductor with Tc of 18.2 K under pressure, a new record for spinels, and splits into two distinct superconducting phases...

Author(s): Vijaysankar Kalappattil, Chuanpu Liu, Zhijie Chen, Vipul Sharma, Kai Liu, Jinke Tang, Steven S.-L. Zhang, and Mingzhong Wu Quantum oscillations in nonlinear electrical transport reveal the geometry and spin orientation of the Fermi surface in the Dirac semimetal α-Sn. [Phys. Rev. Lett. 136, 096603] Published Wed Mar 04, 2026