Energy-free superfast computing invented by scientists using light pulses

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 Using ultrashort pulses of light enables extremely economical switching of a magnet from one stable orientation (red arrow) to another (white arrow). This concept enables ultrafast information storage with unprecedented energy efficiency.
The invention uses magnets to record computer data which consume virtually , solving the dilemma of how to create faster data processing speeds without the accompanying high  costs.
Today's data centre servers consume between 2 to 5% of global electricity consumption producing heat which in turn requires more power to cool the servers.
The problem is so acute that Microsoft has even submerged hundreds of its data centre services in the ocean in an effort to keep them cool and cut costs.
Most data are encoded as binary information (0 or 1 respectively) through the orientation of tiny magnets, called spins, in magnetic hard-drives. The magnetic read/write head is used to set or retrieve information using electrical currents which dissipate huge amounts of energy.
Now an international team publishing in Nature has solved the problem by replacing electricity with extremely short pulses of light—the duration of one trillionth of a second—concentrated by special antennas on top of a magnet.
This new method is superfast but so energy efficient that the temperature of the magnet does not increase at all.
For complete blog visit...
https://m.phys.org/news/2019-05-energy-free-superfast-scientists-pulses.html

Updates Uploaded by Ajeet Vishwakarma
Department of Electronics and communication
Member of TIH



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