The 'color' of darkness at almost absolute zero, makes photons into a computing device. ... so, what darkness is? In a new study, a microwave resonator was cooled down and kept near absolute zero, where any thermal motion freezes. This state corresponds to perfect darkness where no photon is present. However,* in this state (called quantum vacuum) there exist fluctuations* that bring photons in and out of existence for a very short time. The researchers have now managed to convert these fluctuations into real photons of microwave radiation with different frequencies, showing that, in a sense, darkness is more than just absence of light. They also found out that these photons are correlated with each other, as if a magic connection exists between them. The photons at different frequencies will play a similar role to the registers in classical computers, and logical gate operations can be performed between them The results provide a new approach for quantum computing. http://phy
