Quantum discord is the minimal bipartite resource which is needed for a secure quantum key distribution, being a cryptographic primitive equivalent to non-orthogonality. Its role becomes crucial in device-dependent quantum cryptography, where the presence of preparation and detection noise (inaccessible to all parties) may be so strong to prevent the distribution and distillation of entanglemen...

Data that is transient over an unsecured wireless network is always susceptible to being intercepted by anyone within the range of the wireless signal. Hence providing secure communication to keep the user’s information and devices safe when connected wirelessly has become one of the major concerns. Quantum cryptography provides a solution towards absolute communication security over the networ...

Quantum Cryptography is also a Promising Approach visible of final Quantum Computers existence. it is a singular study Technique that provides us a singular secret Protocol that cannot be glorious by anybody. Quantum Cryptography holds foot on laws of Physics The quantum physics Law, however not as like that we have a tendency to area unit victimization addition, multiplication kind of arithmet...

After 20 years of basic research, quantum cryptography has meanwhile led to first commercial products. Its progress has triggered high publicity and additional R&D funding. The aim of this paper is to evaluate the status of quantum cryptography regarding its practical applicability for securing (mobile) communication networks. With that aim in mind, the paper presents a survey of the state-of-t...

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This paper explains the basic principles of quantum cryptography and how these principles apply to quantum key distribution. One specific quantum key distribution protocol called is described in detail and compared to traditional (nonquantum) cryptographic systems. It is explained how addresses some of the shortcomings of traditional cryptographic systems. The remaining technical limitations of...

Data that is transient over an unsecured wireless network is always susceptible to being intercepted by anyone within the range of the wireless signal. Hence providing secure communication to keep the user’s information and devices safe when connected wirelessly has become one of the major concerns. Quantum cryptography provides a solution towards absolute communication security over the networ...

The impossibility of perfectly copying or cloning an unknown quantum state is one of the basic rules governing the physics of quantum systems. The processes that perform the optimal approximate cloning have been found in many cases. These “quantum cloning machines” are important tools for studying a wide variety of tasks, e.g., state estimation and eavesdropping on quantum cryptography. This pa...

Classical and quantum information are very different. Together they can perform feats that neither could achieve alone, such as quantum computing, quantum cryptography and quantum teleportation. Some of the applications range from helping to preventing spies from reading private communications. Among the tools that will facilitate their implementation, we note quantum purification and quantum e...

Quantum cryptography offers new methods of secure communication. Unlike traditional classical cryptography, which employs various mathematical techniques to restrict eavesdroppers from learning the contents of encrypted messages, quantum cryptography is focused on the physics of information. The process of sending and storing information is always carried out by physical means, for example phot...