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Researchers at Purdue University have created a quantum spin wave for light. This can be a carrier of information for future nanotechnologies but with a unique twist: they only flow in one direction.
The article "Unidirectional Maxwellian spin waves," by Todd Van Mechelen and Zubin Jacob has been published in the open access journal Nanophotonics on degruyter.com.
Information - Technologies - Rely - Particles - Electrons
Information technologies at the nanoscale rely on manipulating particles such as electrons and photons. The electron, which is the carrier of charge (electricity), is a fermion while the photon, which is the long-distance transmitter of information, is a boson.
The most important difference between a fermion and a boson is literally how they "spin." Even though electron spin is widely utilized in commercial nanotechnologies such as magnetic memories, optical spin has only recently become a fundamental degree of freedom in nanophotonics with possible...
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