Physical Review X showcases the scientific vitality and diversity of the field of laser-plasma particle acceleration with a carefully curated collection of articles.

Theorists have shown that patterned surfaces can transform the emission from a hot object into a polarized, focused light beam.

Focus story on:
Adam C. Overvig, Sander A. Mann, and Andrea Alù
Phys. Rev. X 11, 021050 (2021)

Merging ideas from neuroscience, machine learning, and quantum technology, researchers propose a new information-storage device.

Synopsis on:
Brendan P. Marsh et al.
Phys. Rev. X 11, 021048 (2021)

Quantum machine-learning techniques speed up the task of classifying data delivered by a small network of quantum sensors.

Viewpoint on:
Yi Xia, Wei Li, Quntao Zhuang, and Zheshen Zhang
Phys. Rev. X 11, 021047 (2021)

A method that enables long-range interactions between fermions on a lattice allows atomic quantum simulations of exotic quantum many-body phenomena.

Viewpoint on:
Elmer Guardado-Sanchez et al.
Phys. Rev. X 11, 021036 (2021)

Researchers have prepared and manipulated subradiant states—in which collective effects slow down the decay of excited atoms—in a dense atomic cloud.

Viewpoint on:
Giovanni Ferioli et al.
Phys. Rev. X 11, 021031 (2021)

An experiment with a nanoscale clock verifies that a clock’s entropy per tick increases as the clock is made more precise.

Synopsis on:
A. N. Pearson et al.
Phys. Rev. X 11, 021029 (2021)

APS Editor in Chief, Michael Thoennessen, discusses a new opportunity for communicating authors to include their pronouns together with their contact email in order to promote a more respectful, inclusive, and equitable environment.