Physicists have created a new type of radar that could help improve underground imaging, using a cloud of atoms in a glass cell to detect reflected radio waves. The radar is a type of quantum sensor, an emerging technology that uses the quantum-mechanical properties of objects as measurement devices. It's still a prototype, but its...

This is today's edition ofThe Download,our weekday newsletter that provides a daily dose of what's going on in the world of technology. This quantum radar could image buried objects Physicists have created a new type of radar that could help improve underground imaging, using a cloud of atoms in a glass cell to detect reflected...