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National Taiwan University has identified a correlation-free regime in coupled quantum emitters that enables scalable, efficient transfer between an effective classical reservoir and a subradiant storage medium. This discovery establishes a simple scaling law for achieving near-complete population inversion, offering significant potential advancements for quantum batteries and long-term excitation storage devices. The work highlights how manipulating the size disparity between driven and storage ensembles can simplify complex quantum dynamics into manageable regimes.

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National Taiwan University Finds Correlation-Free Excitation Regime

Quantum ZeitgeistJuly 23, 20263 min read

National Taiwan University researchers discovered a correlation-free excitation regime in coupled quantum emitters, revealing a scaling law for optimal storage and release.

Researchers at National Taiwan University, Hon Hai Research Institute, and Academia Sinica have demonstrated a scalable mechanism for storing quantum excitation using two ensembles of quantum emitters coupled to a waveguide, a development with potential applications in both quantum batteries and quantum storage. The work details how a coherently driven ensemble can act as an effective excitation reservoir…

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