dorsal/arxiv
View SchemaPre- and post-selection, weak values, and contextuality
| Authors | Jeff Tollaksen |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0602226 |
| URL | https://arxiv.org/abs/quant-ph/0602226 |
| DOI | 10.1088/1751-8113/40/30/025 |
Abstract
By analyzing the concept of contextuality (Bell-Kochen-Specker) in terms of pre-and-post-selection (PPS), it is possible to assign definite values to observables in a new and surprising way. Physical reasons are presented for restrictions on these assignments. When measurements are performed which do not disturb the pre- and post-selection (i.e. weak measurements), then novel experimental aspects of contextuality can be demonstrated including a proof that every PPS-paradox with definite predictions implies contextuality. Certain results of these measurements (eccentric weak values with e.g. negative values outside the spectrum), however, cannot be explained by a "classical-like" hidden variable theory.
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"abstract": "By analyzing the concept of contextuality (Bell-Kochen-Specker) in terms of\npre-and-post-selection (PPS), it is possible to assign definite values to\nobservables in a new and surprising way. Physical reasons are presented for\nrestrictions on these assignments. When measurements are performed which do not\ndisturb the pre- and post-selection (i.e. weak measurements), then novel\nexperimental aspects of contextuality can be demonstrated including a proof\nthat every PPS-paradox with definite predictions implies contextuality. Certain\nresults of these measurements (eccentric weak values with e.g. negative values\noutside the spectrum), however, cannot be explained by a \"classical-like\"\nhidden variable theory.",
"arxiv_id": "quant-ph/0602226",
"authors": [
"Jeff Tollaksen"
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"doi": "10.1088/1751-8113/40/30/025",
"title": "Pre- and post-selection, weak values, and contextuality",
"url": "https://arxiv.org/abs/quant-ph/0602226"
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