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Entanglement-Based Quantum Cryptography and Quantum Communication

Anton Zeilinger

Bulletin of the American Physical SocietyMar 8, 20070 citations

Deterministic and efficient quantum cryptography based on Bell’s theorem

Zeng‐Bing Chen, Qiang Zhang, Xiao‐Hui Bao +2 more

We propose a double-entanglement-based quantum cryptography protocol that is both efficient and deterministic. The proposal uses photon pairs with entanglement both in polarization and in time degrees of freedom; each measurement in which both of the two communicating parties register a photon can establish one and only one perfect correlation, and thus deterministically create a key bit. Eavesdropping can be detected by violation of local realism. A variation of the protocol shows a higher security, similar to the six-state protocol, under individual attacks. Our scheme allows a robust implementation under the current technology.We propose a double-entanglement-based quantum cryptography protocol that is both efficient and deterministic. The proposal uses photon pairs with entanglement both in polarization and in time degrees of freedom; each measurement in which both of the two communicating parties register a photon can establish one and only one perfect correlation, and thus deterministically create a key bit. Eavesdropping can be detected by violation of local realism. A variation of the protocol shows a higher security, similar to the six-state protocol, under individual attacks. Our scheme allows a robust implementation under the current technology.

arXiv:quant-ph/0501171Physical Review AMay 5, 200616 citations

Cryptography via quantum entanglement

F.J. Duarte

Institute of Physics eBooksOct 1, 20192 citations

Cryptography via quantum entanglement

F. J. Duarte

Institute of Physics eBooksSep 1, 20220 citations

Ultra-bright source of polarization-entangled photons in a linear double-pass configuration

Fabian Steinlechner, Sven Ramelow, Marc Jofre +5 more

A number of key experiments in free-space have shown that polarization-entangled photons are not only of paramount importance to fundamental quantum optics, but can also find real-world applications in space, such as quantum enhanced metrological schemes, quantum communication and quantum cryptography. A crucial requirement for envisaged satellite-link experiments is the development of efficient space-qualified sources of entangled photons.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)May 1, 20131 citation

Quantum Authentication Using Double Teleportation

Carlos Cardoso-Isidoro, Francisco Delgado

Abstract A process involving quantum teleportation to teleport a state to two parties in superposition is presented. Then, the process is applied to cryptography. Concretely in this work, we present the process of cryptography authentication using an undefined qubit state and the double quantum teleportation presented previously. Since quantum cryptography protocols are susceptible of eavesdropping, then such a process is considered through an eavesdropper trying to steal the information to supplant the user of authentication in order to quantify certain limits of applicability.Abstract A process involving quantum teleportation to teleport a state to two parties in superposition is presented. Then, the process is applied to cryptography. Concretely in this work, we present the process of cryptography authentication using an undefined qubit state and the double quantum teleportation presented previously. Since quantum cryptography protocols are susceptible of eavesdropping, then such a process is considered through an eavesdropper trying to steal the information to supplant the user of authentication in order to quantify certain limits of applicability.

Journal of Physics Conference SeriesFeb 1, 20234 citations

Double entanglement and quantum cryptography

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