期刊
OPTICS LETTERS
卷 34, 期 20, 页码 3238-3240出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.34.003238
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类别
资金
- SECOQC
- QAP
- NSERC Discovery Grant
- Quantum Works
- CSEC
- Xunta de Galicia, Spain [INCITE08PXIB322257PR]
We propose a method to prepare different non-Poissonian signal pulses from sources of Poissonian photon number distribution, using only linear optical elements and threshold photon detectors. This method allows a simple passive preparation of decoy states for quantum key distribution. We show that the resulting key rates are comparable with the performance of active choices of intensities of Poissonian signals. (C) 2009 Optical Society of America
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