SCIENCE - Einstein's dream (to trap a photon in a box for a period of around one second) surpassed

Einstein's dream (to trap a photon in a box for a period of around one second) surpassed
maintaining in a permanent manner, a constant number of photons (in the box) in a high-quality microwave cavity.The photon, the basic unit of light, can normally only be observed when it disappears. the measurement – the thermometer – changes the state of the system.
http://www.physorg.com/news/2011-09-einstein-surpassed.html