dorsal/arxiv
View SchemaWhat is the value of an observable between pre- and postselection?
| Authors | Lars M. Johansen |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0308137 |
| URL | https://arxiv.org/abs/quant-ph/0308137 |
| DOI | 10.1016/j.physleta.2004.01.041 |
| Journal | Phys. Lett. A 322 (2004) 298-300 |
Abstract
Hall's recent derivation of an exact uncertainty relation [Phys. Rev. A64, 052103 (2001)] is revisited. It is found that the Bayes estimator of an observable between pre- and postselection equals the real part of the weak value. The quadratic loss function equals the expectation of the squared imaginary part of the weak value.
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"abstract": "Hall\u0027s recent derivation of an exact uncertainty relation [Phys. Rev. A64,\n052103 (2001)] is revisited. It is found that the Bayes estimator of an\nobservable between pre- and postselection equals the real part of the weak\nvalue. The quadratic loss function equals the expectation of the squared\nimaginary part of the weak value.",
"arxiv_id": "quant-ph/0308137",
"authors": [
"Lars M. Johansen"
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"doi": "10.1016/j.physleta.2004.01.041",
"journal_ref": "Phys. Lett. A 322 (2004) 298-300",
"title": "What is the value of an observable between pre- and postselection?",
"url": "https://arxiv.org/abs/quant-ph/0308137"
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