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- W2040327320 abstract "We report an experimental quantum key distribution that utilizes pulsed homodyne detection, instead of photon counting, to detect weak pulses of coherent light. Although our scheme inherently has a finite error rate, homodyne detection allows high-efficiency detection and quantum state measurement of the transmitted light using only conventional devices at room temperature. Our prototype system works at $1.55ensuremath{mu}mathrm{m}$ wavelength and the quantum channel is a 1-km standard optical fiber. The probability distribution of the measured electric-field amplitude has a Gaussian shape. The effect of experimental imperfections such as optical loss and detector noise can be parametrized by the variance and the mean value of the Gaussian distribution." @default.
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- W2040327320 date "2003-10-29" @default.
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- W2040327320 title "Quantum cryptography using pulsed homodyne detection" @default.
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- W2040327320 doi "https://doi.org/10.1103/physreva.68.042331" @default.
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