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Differential-phase-shift quantum secret sharing
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DOI：10.1364/OE.16.015469.png)
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Abstract
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A quantum secret sharing (QSS) protocol based on a differential-phase-shift scheme is proposed, which quantum mechanically provides a full secret key to one party and partial keys to two other parties. A weak coherent pulse train is utilized instead of individual photons as in conventional schemes. Compared with previous QSS protocols, the present one features a simple setup, is suitable for fiber transmission, and offers the possibility for a high key creation rate. An experiment is also carried out to demonstrate the operation. (C) 2008 Optical Society of America
Keywords:
KEY DISTRIBUTION