Communications of the ACM
Army Scientists Take Spin on Quantum Research
New U.S. Army research informs how future quantum networks will be designed to deal with the effects of noise and decoherence.
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Researchers at the U.S. Army Combat Capabilities Development Command's Army Research Laboratory have developed a method of enhancing quantum systems to give soldiers more reliable and secure capabilities in the field.
The researchers examined how dispersion affects quantum states of three or more particles of light. Dispersion can impact correlations in communication systems, resulting in reduced data rates or errors.
They also studied systems of three or more entangled photons to determine scenarios where quantum systems outperform classical ones, and considered the effects of noise on entangled systems beyond two qubits.
Said the laboratory's Brian Kirby, "[P]erfect compensation is not, in general, possible when you move to entangled systems of three or more photons. Therefore, dispersion mitigation in future quantum networks may need to take place in each communication channel independently."
From U.S. Army Research Laboratory
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Abstracts Copyright © 2020 SmithBucklin, Washington, DC, USA
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