News articles tagged with 'photon' (Page 12)
New insights into how lasers cut flesh
— 25 Oct 2007 21:51 | PhysicsLasers are at the cutting edge of surgery. From cosmetic to brain surgery, intense beams of coherent light are gradually replacing the steel scalpel for many procedures. Despite this…
Taming tiny, unruly waves for nano optics
— 8 Oct 2007 15:31 | PhysicsNanoscale devices present a unique challenge to any optical technology - there's just not enough room for light to travel in a straight line. On the nanoscale, energy may be produced…
Dead time limits quantum cryptography speeds
— 29 Sep 2007 00:01 | PhysicsQuantum cryptography is potentially the most secure method of sending encrypted information, but does it have a speed limit? According to a new paper by researchers at the National…
Two giant steps in advancement of quantum computing
— 26 Sep 2007 17:16 | PhysicsTwo major steps toward putting quantum computers into real practice - sending a photon signal on demand from a qubit onto wires and transmitting the signal to a second, distant qubit…
Physicists establish spooky quantum communication
— 6 Sep 2007 16:07 | PhysicsPhysicists at the University of Michigan have coaxed two separate atoms to communicate with a sort of quantum intuition that Albert Einstein called 'spooky.' In doing so, the researchers…
Astronomers find gaping hole in the Universe
— 24 Aug 2007 11:57 | AstronomyUniversity of Minnesota astronomers have found an enormous hole in the Universe, nearly a billion light-years across, empty of both normal matter such as stars, galaxies and gas, as…