Dispersion measurement method with down conversion process
نویسندگان
چکیده
منابع مشابه
Quantum Cryptography with Femtosecond Parametric down Conversion
We experimentally demonstrate a quantum cryptography system using two-photon entangled (EPR) states generated via the nonlinear process of spontaneous parametric down conversion pumped by a femtosecond laser. There are two major approaches in quantum cryptography which historically appeared almost simultaneously. One uses the quantum features of single photon states produced by signi cant atten...
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Recently Atatüre et al. claimed to " recover " high-visibility quantum interference in femtosecond pulse pumped type-II spontaneous parametric down-conversion (SPDC) using neither spectral postselection nor a thin nonlinear crystal [1]. We show in this Comment that the interpretation of experimental data as well as the theory presented in Ref. [1] are incorrect and discuss why such a scheme can...
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– In this paper, a new decoy-state scheme for quantum key distribution with parametric down-conversion source is proposed. We use both three-intensity decoy states and their triggered and nontriggered components to estimate the fraction of single-photon counts and quantum bit-error rate of single-photon, and then deduce a more accurate value of key generation rate. The final key rate over trans...
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ژورنال
عنوان ژورنال: Journal of Physics Communications
سال: 2018
ISSN: 2399-6528
DOI: 10.1088/2399-6528/aaccac