Abstract
В этой статяе исследуется вопрос, являются фотоны, принадлежащие к двум когерентным световым пучкам, независимыми. Два когерентных световых пучка, осуществленных с помощью полупрозрачного зеркала, падали на фотоэлектронные умножители. Задача заключалась в том, чтобы определить существуют ли истинные совпадения между импульсами фотоумножителей. Для этого сравнивались число совпадений полученных при когерентном освещении с числом случайных совпадений полученных при некогерентном освещении.
Произведенные нами исследования показывают что истинных совпадений нет. Точнее говоря, если принимать во внимание статическую погрешность, то не больше 0,6% фотонов могли бы дать истинные совпадения.
Summary
The authors investigated, whether or not photons contained in coherent rays are independent. A light ray falling on a semi-transparent mirror splits into two coherent components. Registering the photons of these components by two electron multipliers, it was investigated, whether or not the electron multipliers do give rise to coincidence discharges. It was shown that making use of an amplifier of usual resolving power, that is, of the order of 2 μsec, the arrangement is suitable for detecting systematic coincidences if such coincidences occur.
In the actual experiment the numbers of coincidences obtained with the multipliers were compared 1) when the multipliers were illuminated by, coherent beams, and 2) when they were illuminated, by equally strong incoherent beams. The coherent and incoherent illumination was changed in the first experiments in, two-minute intervals, in the later experiments by an automatic arrangement at every 1/100 of a second. This fast interchange was employed in order to eliminate as far as possible the effect of slow variations of the sensitivity of the apparatus.
The experiments did not show any difference between the effects of coherent and incoherent light. Thus it can be safely assumed that all the coincidences recorded were accidental coincidences. Moreover, allowing even for fluctuations amounting to three times the standard error, the measurements would be incompatible with an assumption that more than 0,6% of the photons behaved in an anomalous way.
Литература
L. Jánossy, Acta Phys. Hung.,1, 423, 1952.
L. Jánossy, Ann. d. Phys.,11, 323, 1953.
A. Ádám—P. Varga, KFKI Közlemények,2, 313, 1954.
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Адам, А., Яноши, Л. & Варга, П. Исследование когерентных фотонных потоков методом совпадений. Acta Physica 4, 301–315 (1955). https://doi.org/10.1007/BF03157829
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DOI: https://doi.org/10.1007/BF03157829