Entanglement

The
extremely short relaxation times of atoms can be measured by using
quantum-entangled photons 

A quantum effect allows infrared measurements to be performed by detecting visible light, bringing opportunities for cheaper, better performance spectroscopy

Experiments show that the careful choice of witnesses makes it easier to detect entangled quantum states

Researchers overcome noise problems in ultrasensitive measurements of tiny amounts of compounds

Ultrafast laser pulses and precisely cut optical crystals could control the quantum properties of light

The invisible quantum link between pairs of photons can be tailored for specific applications