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Multipartite Classical and Quantum Secrecy Monotones [PDF]
In order to study multipartite quantum cryptography, we introduce quantities which vanish on product probability distributions, and which can only decrease if the parties carry out local operations or carry out public classical communication.
A. Wehrl+22 more
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A New Era of Cryptography : Quantum Cryptography [PDF]
ABSTRACT Security is the first priority in today digital world for secure communication between sender and receiver. Various Cryptography techniques are developed time to time for secure communication. Quantum Cryptography is one of the latest and advanced cryptography technique, it is different from all other cryptography technique and more secure ...
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Free-Space Quantum Key Distribution
Based on the firm laws of physics rather than unproven foundations of mathematical complexity, quantum cryptography provides a radically different solution for encryption and promises unconditional security.
Carrasco-Casado, Alberto+2 more
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Quantum Advantage in Cryptography
Ever since its inception, cryptography has been caught in a vicious circle: Cryptographers keep inventing methods to hide information, and cryptanalysts break them, prompting cryptographers to invent even more sophisticated encryption schemes, and so on. But could it be that quantum information technology breaks this circle?
Renato Renner, Ramona Wolf
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Learning with Errors is easy with quantum samples
Learning with Errors is one of the fundamental problems in computational learning theory and has in the last years become the cornerstone of post-quantum cryptography.
Grilo, Alex B.+2 more
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Basic concepts in quantum computation [PDF]
Section headings: 1 Qubits, gates and networks 2 Quantum arithmetic and function evaluations 3 Algorithms and their complexity 4 From interferometers to computers 5 The first quantum algorithms 6 Quantum search 7 Optimal phase estimation 8 Periodicity ...
A. Barenco+40 more
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Security in quantum cryptography
Quantum cryptography exploits principles of quantum physics for the secure processing of information. A prominent example is secure communication, i.e., the task of transmitting confidential messages from one location to another. The cryptographic requirement here is that the transmitted messages remain inaccessible to anyone other than the designated ...
Christopher Portmann, Renato Renner
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Gaussian Quantum Information [PDF]
The science of quantum information has arisen over the last two decades centered on the manipulation of individual quanta of information, known as quantum bits or qubits.
Arthurs, E.+48 more
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Composability in quantum cryptography
In this article, we review several aspects of composability in the context of quantum cryptography. The first part is devoted to key distribution. We discuss the security criteria that a quantum key distribution protocol must fulfill to allow its safe use within a larger security application (e.g., for secure message transmission).
Müller-Quade, Jörn, Renner, Renato
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