Open AccessStability of quantum linear logic circuits against perturbations
Author(s) -
Ihar Babushkin,
Uwe Morgner,
Ayhan Demircan
Publication year - 2020
Publication title -
journal of physics. a, mathematical and theoretical
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.787
H-Index - 163
eISSN - 1751-8121
pISSN - 1751-8113
DOI - 10.1088/1751-8121/ab9da4
Subject(s) - photon , quantum decoherence , electronic circuit , physics , quantum logic , photonics , quantum network , stability (learning theory) , separable space , quantum , quantum mechanics , mathematics , quantum information , computer science , quantum computer , mathematical analysis , machine learning
Here we study transformation of waveshapes of photons under the action of the linear logic circuits and other related architectures involving only linear optical networks and measurements. We show that the gates are working well not only in the case when all photons are separable and located in the same mode, but in some more general cases. For instance, the photonic waveshapes are allowed to be slightly different in different channels; in this case, Zeno effect prevents the photons from decoherence after the measurement, and the gate thus remains neutral to the small waveshape perturbations.