This paper reviews experimental setups in which it was possible to prove, based on measured photon crosscorrelation suppression effects at the beam splitter and using prepared squeezed states, the nonexistence of a definite value of the photon phase difference in Fock states (otherwise these two effects cannot exist simultaneously). It is shown that this conclusion emphasizes the internal inconsistency of the quantum mechanics interpretation in the spirit of classical nonlocal "realism" — in the sense that measured physical quantities have no definite values a priori, i.e. before the moment of measurement.

Keywords: quantum uncertainty, quantum superposition, entanglement, quantum nonlocality, Copenhagen interpretation PACS: 03.65.Ud, 42.65.Lm (all) DOI: 10.3367/UFNe.2017.09.038210 URL: https://ufn.ru/en/articles/2018/3/g/ 000435395400007 2-s2.0-85048421726 2018PhyU...61..313B Citation: Belinsky A V, Klevtsov A A "Nonlocal classical "realism" and quantum superposition as the nonexistence of definite pre-measurement values of physical quantities" Phys. Usp. 61 313–319 (2018) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Received: 6th, April 2017, revised: 27th, July 2017, accepted: 27th, September 2017 Оригинал: Белинский А В, Клевцов А А «Нелокальный классический "реализм" и квантовая суперпозиция как отсутствие определённых значений физических величин до момента измерения» УФН 188 335–342 (2018); DOI: 10.3367/UFNr.2017.09.038210