Quantum probabilities from quantum entanglement: experimentally unpacking the Born rule
- Univ. of Ottawa, ON (Canada)
- Univ. of Naples Federico II (Italy)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Ottawa, ON (Canada); Univ. of Rochester, NY (United States)
- Univ. of Ottawa, ON (Canada); Inst. for Advanced Studies in Basic Sciences, Zanjan (Iran)
The Born rule, a foundational axiom used to deduce probabilities of events from wavefunctions, is indispensable in the everyday practice of quantum physics. It is also key in the quest to reconcile the ostensibly inconsistent laws of the quantum and classical realms, as it confers physical significance to reduced density matrices, the essential tools of decoherence theory. Following Bohr's Copenhagen interpretation, textbooks postulate the Born rule outright. But, recent attempts to derive it from other quantum principles have been successful, holding promise for simplifying and clarifying the quantum foundational bedrock. Moreover, a major family of derivations is based on envariance, a recently discovered symmetry of entangled quantum states. Here, we identify and experimentally test three premises central to these envariance-based derivations, thus demonstrating, in the microworld, the symmetries from which the Born rule is derived. Furthermore, we demonstrate envariance in a purely local quantum system, showing its independence from relativistic causality.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1258014
- Report Number(s):
- LA-UR-15-25060
- Journal Information:
- New Journal of Physics, Vol. 18, Issue 5; ISSN 1367-2630
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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