dorsal/arxiv
View SchemaA Theory of Errors in Quantum Measurement
| Authors | S. G. Rajeev |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0306037 |
| URL | https://arxiv.org/abs/quant-ph/0306037 |
| DOI | 10.1142/S0217732303012672 |
Abstract
It is common to model random errors in a classical measurement by the normal (Gaussian) distribution, because of the central limit theorem. In the quantum theory, the analogous hypothesis is that the matrix elements of the error in an observable are distributed normally. We obtain the probability distribution this implies for the outcome of a measurement, exactly for the case of 2x2 matrices and in the steepest descent approximation in general. Due to the phenomenon of `level repulsion', the probability distributions obtained are quite different from the Gaussian.
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"abstract": "It is common to model random errors in a classical measurement by the normal\n(Gaussian) distribution, because of the central limit theorem. In the quantum\ntheory, the analogous hypothesis is that the matrix elements of the error in an\nobservable are distributed normally. We obtain the probability distribution\nthis implies for the outcome of a measurement, exactly for the case of 2x2\nmatrices and in the steepest descent approximation in general. Due to the\nphenomenon of `level repulsion\u0027, the probability distributions obtained are\nquite different from the Gaussian.",
"arxiv_id": "quant-ph/0306037",
"authors": [
"S. G. Rajeev"
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"doi": "10.1142/S0217732303012672",
"title": "A Theory of Errors in Quantum Measurement",
"url": "https://arxiv.org/abs/quant-ph/0306037"
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