Summary
In linear-polarization measurements of photon couples emitted in atomic cascades, optical systems to collect the light and send it to polarizers under an appropriate angle must generally be used. The polarization distortion so introduced is calculated in a general way, which allows the implementation of optimized optics. The overall decorrelation is the calculated for the 0-1-0 atomic cascade, together with the conditions to still observe the quantum-mechanical violation of Bell's inequality.
Riassunto
Nelle misure di correlazione tra le polarizzazioni lineari di coppie di fotoni emessi in cascata atomica, è in genere necessario usare dei sistemi ottici per raccogliere la luce ed inviarla sotto un angolo opportuno ai polarizzatori. Calcolata la distorsione di polarizzazione così introdotta, si danno le condizioni in cui essa è minima, in modo da poter ottimizzare il sistema ottico. L'effetto di decorrelazione globale è calcolato per la cascata 0-1-0, trovando così in quali condizioni sperimentali è ancora possibile la violazione quanto-meccanica della diseguaglianza di Bell.
Резюме
При измерении корреляций между линейными поляризациями пар фотонов, испущеиных в атомном каскаде, обычно необходимо использовать оптические системы для собирания света и направления его в поляриметры под определенным углом. Вычисляется искажение поляризации, обусловленное этим методом, что позволяет сформулировать условия для получения оптимальной оптики. Затем вычисляется суммарная декорреляция для атомного каскада 0-1-0 и указываются условия, при которых возможно наблюдение квантовомеханического нарушения неравенства Белла.
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Work supported by I.N.F.N., M.P.I. and C.R.R.N./S.M.
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Baldo, M., Falciglia, F., Oliveri, M.E. et al. Optical-system effects in two-photon polarization correlation experiments. Nuov Cim B 63, 679–695 (1981). https://doi.org/10.1007/BF02755107
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DOI: https://doi.org/10.1007/BF02755107