An experiment shows that errors in quantum computation can be repeatedly corrected on the fly.

Focus story on:
C. Ryan-Anderson et al.
Phys. Rev. X 11, 041058 (2021)

Sixteen years of timing data from the double pulsar confirm the validity of Einstein’s theory of general relativity to a new level.

Viewpoint on:
M. Kramer et al.
Phys. Rev. X 11, 041050 (2021)

Variational quantum algorithms could help researchers improve the performance of optical atomic clocks and of other quantum-metrology schemes.

Viewpoint on:
Raphael Kaubruegger et al.
Phys. Rev. X 11, 041045 (2021)

Physical Review X celebrates its 10th anniversary by highlighting seminal articles published since the journal’s launch.

Researchers successfully use an array of quantum dots to create and study a Heisenberg spin chain.

Synopsis on:
C. J. van Diepen et al.
Phys. Rev. X 11, 041025 (2021)

The control of molecular-level quantum effects in artificial photosynthetic membranes is a powerful tuning knob for optimizing long-range energy transport, according to a theoretical study.

Viewpoint on:
Andrea Mattioni, Felipe Caycedo-Soler, Susana F. Huelga, and Martin B. Plenio
Phys. Rev. X 11, 041003 (2021)

Departing Lead Editors Cristina Marchetti and Jean-Michel Raimond reflect on the evolution of the journal and share its anniversary plans.

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.