Quantum security is spookily certain

Article Abstract:

Quantum cryptography is the first practical application of the foundations of quantum mechanics. In the development of the science of quantum information, new capabilities have been predicted that make use of quantum mechanical superpositions of information. Using quantum key distribution, shared cryptographic key material whose security is assured by the laws of quantum mechanics can be created. However, unanticipated advances in fields like quantum computation could render quantum cryptography not just insecure but also retroactively vulnerable.

Methods, Cryptography

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Hidden symmetries in the energy levels of excitonic artificial atoms

Article Abstract:

Artificial electronic structure was examined through injection of a controlled number of electrons and holes into a single quantum dot.

Atoms

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Electrons in artificial atoms

Article Abstract:

Optical studies of individual quantum dots and rings are reported.

Semiconductors

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