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Creators/Authors contains: "Shinbrough, Kai"

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  1. ; ; (, Optica Publishing Group)
    We simulate Λ-type quantum memory in atomic ensembles with the addition of a high-lying sensor state in the continuous dynamical decoupling regime. We find order-of-magnitudes memory lifetime enhancement and explore the dressing-field parameter space. 
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  2. (, Physics Today)
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  3. ; (, Physical Review A)
  4. ; ; ; ; (, Advances in atomic molecular and optical physics)
    Broadband quantum memory is critical to enabling the operation of emerging photonic quantum technology at high speeds. Here we review a central challenge to achieving broadband quantum memory in atomic ensembles—what we call the ‘linewidth-bandwidth mismatch’ problem—and the relative merits of various memory protocols and hardware used for accomplishing this task. We also review the theory underlying atomic ensemble quantum memory and its extensions to optimizing memory efficiency and characterizing memory sensitivity. Finally, we examine the state-of-the-art performance of broadband atomic ensemble quantum memories with respect to three key metrics: efficiency, memory lifetime, and noise. 
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  5. ; ; ; ; ; ; (, IEEE)
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  6. ; ; ; ; ; ; (, IEEE)
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  7. ; ; ; ; ; ; (, CLEO 2023, Technical Digest Series (Optica Publishing Group, 2023))
    We measure 95.6±0.3% storage efficiency of ultrafast photons in a collisionally broadened barium vapor quantum memory. We measure 31±1% total efficiency, limited by control field power, and a 0.515(6) ns lifetime, limited by motional dephasing. 
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  8. ; ; ; ; ; (, Frontiers in Optics + Laser Science)
    Accepted Manuscript Full Text Available
  9. ; (, Conference on Lasers and Electro-Optics)
    We examine the sensitivity of Λ-type optical quantum memories to experimental fluctuations using a variance-based analysis. The results agree with physical interpretations of quantum memory protocols, and are important for practical implementations. 
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  10. ; ; ; ; ; (, Optica Publishing Group)
    We report record storage efficiencies in the first atomic THz-bandwidth quantum memory. Near-off-resonant orbital transitions in collisionally broadened hot atomic barium vapor allow for 83% storage efficiency, 25% total efficiency, and a time-bandwidth-product of 800. 
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