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Proceedings Paper

Quantum lock on dark states
Author(s): Y. I. Ozhigov
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Paper Abstract

We propose quantum protection circuit (quantum lock), based on dark states of ensembles of two-level atoms in optical cavity. The secret key is the splitting of atoms into pairs, and publicly accessible part of the lock is the tensor product of EPR singlets, corresponding to the given splitting. To open the lock one must move synchronously pairs of atoms from the correct splitting to the other cavity; the lock will open if atoms do not emit photons. This scheme has perfect secrecy: it is impossible to hack it, even with effective solutions of any classical computational problems, in contrast to the RSA scheme. The method of obtaining dark states through Stark shift of atomic excitation energy is also proposed. This scheme makes possible to create secret keys of a few tens of atoms that is sufficient for the most practical applications.

Paper Details

Date Published: 15 March 2019
PDF: 7 pages
Proc. SPIE 11022, International Conference on Micro- and Nano-Electronics 2018, 110222D (15 March 2019); doi: 10.1117/12.2523571
Show Author Affiliations
Y. I. Ozhigov, M.V. Lomonosov Moscow State Univ. (Russian Federation)
Institute of Physics and Technology (Russian Federation)

Published in SPIE Proceedings Vol. 11022:
International Conference on Micro- and Nano-Electronics 2018
Vladimir F. Lukichev; Konstantin V. Rudenko, Editor(s)

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