Contextuality-by-Default description of Bell tests
  • View Times: 32
  • |
  • Release Date: 2021-12-15
  • Quantum Physics
Video Introduction

Contextuality and entanglement are valuable resources for quantum computing and quantum information. Bell inequalities are used to certify entanglement; thus, it is important to understand why and how they are violated. Quantum mechanics and behavioral sciences teach us that random variables measuring the same content (the answer to the same Yes or No question) may vary, if measured jointly with other random variables. Alice and Bob raw data confirm Einsteinian non-signaling, but setting dependent experimental protocols are used to create samples of coupled pairs of distant outcomes and to estimate correlations. Marginal expectations, estimated using these final samples, depend on distant settings. Therefore, a system of random variables measured in Bell tests is inconsistently connected and it should be analyzed using a Contextuality-by-Default approach. The violation of Bell inequalities and inconsistent connectedness may be explained using a contextual locally causal probabilistic model in which setting dependent variables describing measuring instruments are correctly incorporated. Researchers prove that this model does not restrict experimenters freedom of choice which is a prerequisite of science. Contextuality seems to be the rule and not an exception; thus, it should be carefully tested.

Full Transcript
1000/1000

Confirm

Are you sure to Delete?
Cite
If you have any further questions, please contact Encyclopedia Editorial Office.
Kupczynski, M. Contextuality-by-Default description of Bell tests. Encyclopedia. Available online: https://encyclopedia.pub/video/video_detail/145 (accessed on 15 November 2024).
Kupczynski M. Contextuality-by-Default description of Bell tests. Encyclopedia. Available at: https://encyclopedia.pub/video/video_detail/145. Accessed November 15, 2024.
Kupczynski, Marian. "Contextuality-by-Default description of Bell tests" Encyclopedia, https://encyclopedia.pub/video/video_detail/145 (accessed November 15, 2024).
Kupczynski, M. (2021, December 15). Contextuality-by-Default description of Bell tests. In Encyclopedia. https://encyclopedia.pub/video/video_detail/145
Kupczynski, Marian. "Contextuality-by-Default description of Bell tests." Encyclopedia. Web. 15 December, 2021.
ScholarVision Creations