Quantum cryptography with 3-state systems.

By H. Bechmann-Pasquinucci, Asher Peres. Physical Review Letters, 2000

458 citations recorded by the source corpus.

We consider quantum cryptographic schemes where the carriers of information are 3-state particles. One protocol uses four mutually unbiased bases and appears to provide better security than obtainable with 2-state carriers. Another possible method allows quantum states to belong to more than one basis. Security is not better, but many curious features arise.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/ccc2d2683e45a3556bc177b9e2229bdb0406febb

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

State-independent experimental test of quantum contextuality (2009, background): “We expect this result to stimulate new applications of quantum contextuality for quantum information processing[27, 28, 29, 30].”
A New Proof for the Existence of Mutually Unbiased Bases (2001, methodology): “Besides the obvious importanc e of mutually unbiased bases in the context of quantum state determination and foundations of quantum m echanics, recently it has also found useful applications in quantum cryptography where it has been d monstrated that using higher dimensional quantum systems for key ”
Entanglement of the orbital angular momentum states of photons (2001, background): “, enabling, for example, more efficient use of communication channels in quantum cryptograph”
Quantum cryptography (2001, unknown): “…many-path interferometers opens up the possibility to code quantum systems of dimensions larger than 2, like qutrits, ququarts, etc. (BechmannPasquinucci and Tittel 2000, Bechmann-Pasquinucci and Peres 2000, Bourennane et al. 2001a). be equal within a fraction of the coherence time of the photons.”
Quantum Information and Relativity Theory (2002, background): “Security may be improved by using three bases (Bruß, 1998; Bechmann-Pasquinucci and Gisin, 1999), and even more by going to higher dimensions (Bechmann-Pasquinucci and Peres, 2000; Bruß and Macchiavello 2002).”
The security of practical quantum key distribution (2008, background): “The coding of BB84 and six-state has been generalized to larger dimensional quantum systems (Bechmann-Pasquinucci and Peres, 2000; Bechmann-Pasquinucci and Tittel, 2000).”