کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1543437 997507 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantum information processing through quantum dots in slow-light photonic crystal waveguides
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Quantum information processing through quantum dots in slow-light photonic crystal waveguides
چکیده انگلیسی
We propose a scheme to realize controlled phase-flip gate between two single photons through a single quantum dot (QD) in a slow-light photonic crystal (PhC) waveguide. Enhanced Purcell factor and large β-factor lead to high gate fidelity over broadband frequencies compared to cavity-assisted system. The excellent physical integration of this PhC waveguide system provides tremendous potential for large-scale quantum information processing. Then we generalize to a multi-atom controlled phase-flip gate based on waveguide system in Sagnac interferometer. Through the Sagnac interferometer, the single photon adds the phase-flip operation on the atomic state without changing the photonic state. The controlled phase-flip gate on the atoms can be successfully constructed with high fidelity in one step, even without detecting the photon.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Photonics and Nanostructures - Fundamentals and Applications - Volume 7, Issue 1, February 2009, Pages 47-55
نویسندگان
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