Redundant information encoding in QED during decoherence


Broadly understood decoherence processes in quantum electrodynamics, induced by neglecting either the radiation [L. Landau, Z. Phys. 45, 430 (1927)] or the charged matter [N. Bohr and L. Rosenfeld, K. Danske Vidensk. Selsk, Math.-Fys. Medd. XII, 8 (1933)], have been studied from the dawn of the theory. However, what happens in between, when a part of the radiation may be observed, as is the case in many real-life situations, has not been analyzed yet. We present such an analysis for a nonrelativistic, pointlike charge and thermal radiation. In the dipole approximation, we solve the dynamics and show that there is a regime where, despite the noise, the observed field carries away almost perfect and hugely redundant information about the charge momentum. We analyze a partial charge-field state and show that it approaches a so-called spectrum broadcast structure.


Informacje szczegółowe

Kategoria: Publikacja w czasopiśmie
Typ: artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w: PHYSICAL REVIEW A nr 97, wydanie 1, strony 1 - 8,
ISSN: 2469-9926
Język: angielski
Rok wydania: 2018
Opis bibliograficzny: Tuziemski J., Witas P., Korbicz J.: Redundant information encoding in QED during decoherence// PHYSICAL REVIEW A. -Vol. 97, iss. 1 (2018), s.1-8
DOI: 10.1103/physreva.97.012110
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