"Srikanth, R." . "Pathak, Anirban" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "3"^^ . "RIV/61989592:15310/14:33151956" . "Two-step orthogonal-state-based protocol of quantum secure direct communication with the help of order-rearrangement technique" . "15310" . "10.1007/s11128-014-0825-8" . "13"^^ . . . . "1"^^ . "RIV/61989592:15310/14:33151956!RIV15-MSM-15310___" . "1570-0755" . "13" . "Pathak, Anirban" . . . . "The Goldenberg-Vaidman (GV) protocol for quantum key distribution uses orthogonal encoding states of a particle. Its security arises because operations accessible to Eve are insufficient to distinguish the two states encoding the secret bit. We propose a two-particle cryptographic protocol for quantum secure direct communication, wherein orthogonal states encode the secret, and security arises from restricting Eve from accessing any two-particle operations. However, there is a non-trivial difference between the two cases. While the encoding states are perfectly indistinguishable in GV, they are partially distinguishable in the bipartite case, leading to a qualitatively different kind of information-versus-disturbance trade-off and also options for Eve in the two cases." . "000345084100010" . "12" . . "Quantum Information Processing" . "Two-step orthogonal-state-based protocol of quantum secure direct communication with the help of order-rearrangement technique" . "The Goldenberg-Vaidman (GV) protocol for quantum key distribution uses orthogonal encoding states of a particle. Its security arises because operations accessible to Eve are insufficient to distinguish the two states encoding the secret bit. We propose a two-particle cryptographic protocol for quantum secure direct communication, wherein orthogonal states encode the secret, and security arises from restricting Eve from accessing any two-particle operations. However, there is a non-trivial difference between the two cases. While the encoding states are perfectly indistinguishable in GV, they are partially distinguishable in the bipartite case, leading to a qualitatively different kind of information-versus-disturbance trade-off and also options for Eve in the two cases."@en . "Yadav, Preeti" . . . . . "Two-step orthogonal-state-based protocol of quantum secure direct communication with the help of order-rearrangement technique"@en . "http://download.springer.com/static/pdf/848/art%253A10.1007%252Fs11128-014-0825-8.pdf?auth66=1423051828_dc46285fb9456335356b21fdf1cca37d&ext=.pdf" . "[8557F08380FF]" . "Two-step orthogonal-state-based protocol of quantum secure direct communication with the help of order-rearrangement technique"@en . . "P(EE2.3.20.0017)" . "51556" . . "Quantum secure direct communication; Orthogonal-state-based quantum communication; Communication security; Quantum cryptography"@en . . .