Physicists measured how readily a current of electron pairs flows through 'magic-angle' graphene, a major step toward understanding how this unusual material superconducts. By determining how readily ...

When excited by an external stimulus (such as a laser pulse), a quantum dot can emit a single photon as the electron-hole pair recombines. Quantum dots can be fabricated using various semiconductor ...

However, two recent papers show that an even better bet could be the absence of one electron (known as hole) or more precisely its spin 1,2.