منابع مشابه
Capacity of Quantum Channels Using Product Measurements
The capacity of a quantum channel for transmission of classical information depends in principle on whether product states or entangled states are used at the input, and whether product or entangled measurements are used at the output. We show that when product measurements are used, the capacity of the channel is achieved with product input states, ∗Partially supported by National Science Foun...
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Quantum cryptography enables one to verify that the state of the quantum system has not been tampered with and thus one can obtain privacy regardless of the power of the eavesdropper. All previous protocols relied on the ability to faithfully send quantum states or equivalently to share pure entanglement. Here we show this need not be the case-one can obtain verifiable privacy even through some...
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Existing quantum cryptographic schemes are not, as they stand, operable in the presence of noise on the quantum communication channel. Although they become operable if they are supplemented by classical privacy-ampliication techniques, the resulting schemes are diicult to analyse and have not been proved secure. We introduce the concept of quantum privacy ampliication and a cryptographic scheme...
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ژورنال
عنوان ژورنال: Reports on Mathematical Physics
سال: 2017
ISSN: 0034-4877
DOI: 10.1016/s0034-4877(18)30005-3