(ScienceDaily) Researchers say they have been able to greatly improve the readout of data from digital memories — thanks to a phenomenon known as ‘quantum entanglement’.
The research team, which included researchers from the Italian Institute of Metrological Research (INRIM) and the University of York, say the findings could have major applications for digital storage devices, including optical memories such as CD or BluRay disks.
This is the first experimental demonstration that quantum sources of light can enhance the readout of information from digital memories, an advance that could potentially lead to faster access of data in large databases and to construct memories with higher capacities in our next-generation computers.
The researchers say the consequences of the study go far beyond applications to digital memories. In fact, the same principle can be used in spectroscopy and the measurement of biological samples, chemical compounds and other materials.
The scheme also paves the way for non-invasive, ultra-sensitive measurements by greatly reducing the optical power without reducing the amount of information recovered from the systems.
Professor Stefano Pirandola, from the Department of Computer Science at the University of York, said: “This experiment finally shows how we can harness quantum entanglement to better read information from memory devices and other physical systems.”

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