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'Quantum CD' could hold up to 1,000 times more data than today's optical disks
A new proposal borrows from the principles of quantum mechanics and a technique called "wavelength multiplexing" to hypothesize an ultra-dense new storage format.
"We worked out the basic physics behind how the transfer of energy between defects could underlie an incredibly efficient optical storage method," study co-author Giulia Galli, a professor at the University of Chicago's Pritzker School of Molecular Engineering, said in a . But they had not studied how the quantum defects' behavior changes when the light source is incredibly close, such as narrow-band rare earth emitters embedded a few nanometers (a millionth of a millimeter) away. "To start applying this to developing optical memory, we still need to answer additional basic questions about how long this excited state remains and how we read out the data," co-author Swarnabha Chattaraj, a postdoctoral researcher at Argonne National Laboratory, said in the statement.
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