Title:	Generalized quantum secret sharing
Authors:	Singh, Sudhir Kumar Srikanth, R.
Issue Date:	19-Jan-2005
Publisher:	The American Physical Society
Citation:	Physical Review A, 2005, Vol.71, 012328
Abstract:	We explore a generalization of quantum secret sharing (QSS) in which classical shares play a complementary role to quantum shares, exploring further consequences of an idea first studied by Nascimento, Mueller-Quade, and Imai [Phys. Rev. A 64, 042311 (2001)]. We examine three ways, termed inflation, compression, and twin thresholding, by which the proportion of classical shares can be augmented. This has the important application that it reduces quantum (information processing) players by replacing them with their classical counterparts, thereby making quantum secret sharing considerably easier and less expensive to implement in a practical setting. In compression, a QSS scheme is turned into an equivalent scheme with fewer quantum players, compensated for by suitable classical shares. In inflation, a QSS scheme is enlarged by adding only classical shares and players. In a twin-threshold scheme, we invoke two separate thresholds for classical and quantum shares based on the idea of information dilution.
URI:	http://hdl.handle.net/2289/1201
ISSN:	1050-2947 1094-1622 (online)
Alternative Location:	http://link.aps.org/abstract/PRA/v71/e012328
Copyright:	(2005) by the American Physical Society
Appears in Collections:	Research Papers (LAMP)

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