Conduction electrons typically whiz through crystals in broad energy bands. However, some arrangements of atoms conceivably engender so much destructive interference among the electrons’ wave packets ...

Figure 1: Moore and his colleagues measured the momentum kick imparted by a single gas molecule on an optically levitated silica nanoparticle (center) [2]. Thanks to the isolation offered by setups ...

A proposed lab-based quantum sensor could precisely measure within seconds the warping of spacetime caused by Earth’s rotation. Einstein’s theory of general relativity predicts that Earth’s rotation ...

Two studies find that fundamental quantum constraints rule out a previously proposed neutrino-laser scheme. In last year’s proposal of a neutrino laser, the researchers sought to exploit the same ...

New experiments suggest that superconductivity in twisted bilayer graphene depends on an unconventional electron-pairing mechanism. Figure 1: Two twisted bilayer graphene (TBG) layers stacked one on ...

Figure 1: Barrios Hita and colleagues have explored a new path for developing a formulation of quantum theory that doesn’t rely on complex numbers [5]. In standard quantum theory, every physical ...

Figure 1: A cross section of the core of a collapsing star. Electron neutrinos (blue arrows) and muon and tau neutrinos (green arrows) are emitted and absorbed within all parts of the core. In the ...

Through a quantum-switch experiment, researchers attempt to reveal “indefinite causal order”—a quantum phenomenon involving events in a before-and-after superposition. Artistic rendition of the ...

Figure 1: The shattering of glass is an archetypal fragmentation process. × When a solid object shatters or a liquid drop disintegrates, predicting the outcome seems at first hopelessly difficult. In ...

Pairs of skyrmions—tiny whirlpools that emerge in some magnetic materials—might be able to self-propel, a behavior reminiscent of that of active-matter systems such as motile bacteria. Figure 1: ...

For a wide range of complex fluids, the transition from solid-like at rest to liquid-like when pushed can be predicted from properties of the at-rest state. Slow flow. Slow flow. Yield stress fluids ...

Microsoft’s announcement of achieving a milestone in a potentially transformative approach to quantum computing is met with skepticism by researchers attending the APS Global Summit. Microsoft's ...