PHOTON PAIRS Laser light in water (shown) exhibits an unexpected quirk: Light particles interact with their companions in the same
way electrons pair up in superconductors.
Not exact matches
Superconductivity is characterised by the
way the
electrons interact: within a superconductor
electrons form
pairs, and the spin alignment between the
electrons of a
pair may be different depending on the type — or «symmetry» — of superconductivity involved.
Now, a
pair of scientists from the U.S. Department of Energy's Brookhaven National Laboratory and Ludwig Maximilian University in Munich have proposed the first solution to such subatomic stoppage: a novel
way to create a more robust
electron wave by binding together the
electron's direction of movement and its spin.
When both members of the
pair became excited, one of them would normally fall to the lower rung before being struck by an incoming photon, producing no photon along the
way and leaving too few excited
electrons to make laser light.