ON THE COVER
May 16, 2022
Spectrum of an intense few-cycle light pulse as it crosses from vacuum (left of orange line) into a resonant nonlinear medium (right) and stops.
Mikhail Arkhipov, Rostislav Arkhipov, Ihar Babushkin, and Nikolay Rosanov
Phys. Rev. Lett. 128, 203901 (2022)
EDITORS' SUGGESTION
Reflectionless exceptional points, at which two eigenstates coalesce, have been observed in complex scattering systems.
Clément Ferise et al.
Phys. Rev. Lett. 128, 203904 (2022)
EDITORS' SUGGESTION
Enhancement of the supercurrent, induced by a magnetic field in a nanowire, is caused by quasiparticle trapping rather than Majorana fermions.
Yosuke Sato et al.
Phys. Rev. Lett. 128, 207001 (2022)
EDITORS' SUGGESTION
A system-independent relation quantifying the energetic cost of a measurement is derived for quantum metrological protocols.
Yaoming Chu and Jianming Cai
Phys. Rev. Lett. 128, 200501 (2022)
EDITORS' SUGGESTION
A classical model for arbitrary systems exhibiting hysteresis is combined with machine learning techniques to efficiently create models for characterizing hysteresis in accelerator magnets and to improve model-based optimization.
R. Roussel et al.
Phys. Rev. Lett. 128, 204801 (2022)
EDITORS' SUGGESTION
Coexistence of nontrivial topology and intrinsic superconductivity is observed in few-layer stanene films on a Bi(111) substrate.
Chenxiao Zhao et al.
Phys. Rev. Lett. 128, 206802 (2022)
EDITORS' SUGGESTION
The constant for phonon-induced spin relaxation in the Elliot-Yafet mechanism is not constant, but instead decreases by one order of magnitude as the thickness of an Al film is varied from 8.5 to 300 nm.
J. D. Watts et al.
Phys. Rev. Lett. 128, 207201 (2022)
EDITORS' SUGGESTION
Experiments in Dirac-cone metamaterials present the first observation of direction-independent phase matching in a medium where phase matching is relevant for parametric nonlinear optical processes.
Justin R. Gagnon et al.
Phys. Rev. Lett. 128, 203902 (2022)