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Quantum contextual phenomena observed in single-neutron interferometer experiments

Hasegawa, Yuji ; Presto, Japan Science and Technology Agency ; Rauch, Helmut

AIP Conference Proceedings, 04 January 2006, Vol.810(1) [Tạp chí có phản biện]

ISSN: 0094-243X ; E-ISSN: 1551-7616 ; DOI: 10.1063/1.2158717

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  • Nhan đề:
    Quantum contextual phenomena observed in single-neutron interferometer experiments
  • Tác giả: Hasegawa, Yuji ; Presto, Japan Science and Technology Agency ; Rauch, Helmut
  • Chủ đề: Atomic And Molecular Physics ; Bell Theorem ; Degrees Of Freedom ; Density Matrix ; Hilbert Space ; Interferometers ; Interferometry ; Neutrons ; Phase Shift ; Quantum Entanglement ; Spin ; Wave Functions ; Physics
  • Là 1 phần của: AIP Conference Proceedings, 04 January 2006, Vol.810(1)
  • Mô tả: Neutron optical experiments are presented, which exhibit quantum contextual phenomena. Entanglement is achieved not between particles, but between degrees of freedom, in this case, for a single-particle. Appropriate combinations of the direction of spin analysis and the position of the phase shifter allow an experimental verification of the violation of a Bell-like inequality. Our experiments manifest the fact that manipulation of the wavefunction in one Hilbert space influences the result of the measurement in the other Hilbert space: manipulation without touch{exclamation_point} Next, we report another experiment which exhibits other peculiarity of quantum contextuality, e.g., originally intended to show a Kochen-Specker-like phenomenon. We have introduced inequalities for quantitative analysis of the experiments. The value obtained in the experiments clearly showed violations of prediction by non-contextual theory. Finally, we have accomplished a tomographic determination of entangled quantum state in single-neutrons. There, characteristics of the Bell-sate are confirmed: four poles for the real part of the density matrix are clearly seen.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0094-243X ; E-ISSN: 1551-7616 ; DOI: 10.1063/1.2158717

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