摘要
A multiparty quantum secret sharing (MQSS) protocol with two-photon three-dimensional Bell states was proposed by Gao [Commun. Theor. Phys. 52 (2009) 421] recently. This study points out that the performance of Gao's protocol can be much improved by using the technique of decoy single photons and carefully modifying the protocol to remove some unnecessary unitary operations, devices, and transmissions.
A multiparty quantum secret sharing （MQSS） protocol with two-photon three-dimensional Bell states was proposed by Gao [Commun. Theor. Phys. 52 （2009） 421] recently. This study points out that the performance of Gao＇s protocol can be much improved by using the technique of decoy single photons and carefully modifying the protocol to remove some unnecessary unitary operations, devices, and transmissions.
基金
Supported by the National Science Council of Taiwan under Contract No. NSC99-2221-E-471-001
