Single ultracold rubidium atom trapped in the evanescent field of an integrated silicon-nitride microring resonator, achieving single-atom cooperativity exceeding unity.
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Proposes realizing all-optical neural networks via phase-tunable interference, bad-cavity integration, and transient Rabi dynamics in waveguide QED, with simulations showing high accuracy on MNIST and object recognition.
Loss in an auxiliary cavity induces nonreciprocal excitation exchange in a three-cavity quantum battery, yielding significantly higher steady-state energy in the battery than the charger.
A quantum emitter in a waveguide sorts single- and two-photon light with 62% success, enabling Bell state measurements at 57% post-selected probability that exceeds the 50% linear-optics limit.
Two electrically tunable quantum dots coupled through a bidirectional waveguide form a radiatively coupled artificial molecule whose emission direction is switched by driving phase, yielding directional single photons and photon pairs.
Theoretical derivation of the full two-photon dispersion ω(K) in chiral waveguide QED, revealing bound, antibound, resonance states across all K with gapless real part and applicability to finite arrays.
Near-field probing of trapped atoms is inherently transient due to probe-induced heating that reduces coupling strength via increased position spread.