Three theoretical physicists at RIKEN have proposed a new way to achieve one-way quantum synchronization in phonons. The method is designed to remain stable even when real-world obstacles, including fabrication flaws and environmental noise, would normally disrupt delicate quantum effects.
Many technologies rely on components that work like one-way routes, letting particles or signals move easily in one direction while strongly limiting movement in the opposite direction. These nonreciprocal components are already important in microwave and optical systems, where they help guide signals and reduce unwanted reflections.
“Nonreciprocal components enable signals to travel along desired paths, whereas they are strongly attenuated in the opposite direction,” notes Franco Nori of the RIKEN Center for Quantum Computing (RQC). “This ability finds applications ranging from signal processing to invisible cloaking.”
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