An Enhanced Photonic Quantum Finite Automaton
- URL: http://arxiv.org/abs/2109.10101v1
- Date: Tue, 21 Sep 2021 11:14:26 GMT
- Title: An Enhanced Photonic Quantum Finite Automaton
- Authors: Alessandro Candeloro, Carlo Mereghetti, Beatrice Palano, Simone
Cialdi, Matteo G. A. Paris and Stefano Olivares
- Abstract summary: We have described an optical implementation of a measure-once one-way quantum finite automaton recognizing a well-known family of unary periodic languages.
To process input words, the automaton exploits the degree of polarization of single photons and, to reduce the acceptance error probability, a technique of confidence amplification using the photon counts is implemented.
- Score: 52.77024349608834
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In a recent paper we have described an optical implementation of a
measure-once one-way quantum finite automaton recognizing a well-known family
of unary periodic languages, accepting words not in the language with a given
error probability. To process input words, the automaton exploits the degree of
polarization of single photons and, to reduce the acceptance error probability,
a technique of confidence amplification using the photon counts is implemented.
In this paper, we show that the performance of this automaton may be further
improved by using strategies that suitably consider both the orthogonal output
polarizations of the photon. In our analysis, we also take into account how
detector dark counts may affect the performance of the automaton.
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