| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | ANNALS OF PHYSICS; v. 392, p. 272-286, MAY 2018. |
| Web of Science Citations: | 1 |
| Abstract | |
Weak measurements have an increasing number of applications in contemporary quantum mechanics. They were originally described as a weak interaction that slightly entangled the translational degrees of freedom of a particle to its spin, yielding surprising results after post-selection. That description often ignores the kinetic energy of the particle and its movement in three dimensions. Here, we include these elements and re-obtain the weak values within the context of collision theory by two different approaches, and prove that the results are compatible with each other and with the results from the traditional approach. To provide a more complete description, we generalize weak values into weak tensors and use them to provide a more realistic description of the Stern-Gerlach apparatus. (C) 2018 Elsevier Inc. All rights reserved. (AU) | |
| FAPESP's process: | 18/00796-3 - Quantum-information processing under the auspices of the scattering-matrix formalism |
| Grantee: | Reginaldo de Jesus Napolitano |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 11/19848-4 - Influence of the quantum measurement time on quantum information related phenomena |
| Grantee: | Carlos Alexandre Brasil |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |