Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Based on the controlled quantum teleportation protocol, a controlled quantum secure direct communication scheme (CQSDC) protocol, which transmits a one-bit message via the Greenberger-Horne-Zeilinger entangled state, is presented by Gao et al. in [Chinese Phys. Vol. 14 (2005), No. 5, p. 893]. However, through this article we want to enlighten of the fact that, due to a flaw in the control function,...
We propose a deterministic secure quantum communication scheme by using Greenberger-Horne-Zeilinger GHZ4 states. The scheme consists of sharing the correlation of four particle GHZ4 states between the legitimate users. After ensuring the security of the quantum channel, they begin to exchange the secret information according to their four-particle projective measurements and classical information...
Utilizing the construction of a diagonal projection transformation matrix, a scheme for probabilistic teleportation of an arbitrary n-qudit state is provided via partially entangled states. In addition, we investigate that the total system of particles can be expanded by Bell bases and transformation operators. Not only are the relations between transformation operators and the unitary matrixes performed...
Probabilistic dense coding in the case of three energy-level non-maximally quantum entangled states between three parties has been investigated in this paper. By introducing an auxiliary particle and performing a collective unitary operation, dense coding of non-maximally entangled state is succeeded with certain probability. The coding scheme for multi-communications between N+1-parties is generalized...
In this paper, a novel deterministic secure quantum communication scheme with four-qubit W states is proposed. By utilizing four kinds of unitary operations, the two legitimate users can directly transmit the secret messages based on the Bell measurements and some additional classical information. Analysis shows that our scheme has a high capacity as each W state can carry two bits of secret information,...
A novel efficient deterministic secure quantum communication protocol with four-qubit cluster states is proposed. By making Bell measurement and single-photon measurement, the two legitimate users can transmit the secret messages after exchanging some additional classical information. It has a high capacity as each cluster state can carry three bits of classical information, and its total efficiency...
In this paper, a novel authenticated quantum secure direct communication scheme with three-dimension single photons is presented, where the message is encoded on batches of qutrits, and identity is mutual authenticated with their shared seed key. Security analysis shows that this scheme can efficiently resist Eve's attacks and the impersonator's attacks. Comparing with those protocols using entangled...
In the multiparty communication, there are two types of Communication modes: the many-to-one mode and the one-to-many mode. In this paper, two efficient authenticated multiparty quantum secure direct communication protocols are presented by using GHZ states and dense coding, one is used for the many-to-one communication, and the other is suitable to the one-to-many communication. Analysis shows these...
Quantum switching network will play an important role in the field of quantum communication. We propose a new quantum switching scheme where not only the classical data and the unknown quantum state of one particle but also the multi-particle state can be transferred. Moreover, a centralized restoration scheme is used to reduce the switching time for transferring quantum packets containing such unknown...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.