dorsal/arxiv
View SchemaMutually unbiased bases and discrete Wigner functions
| Authors | Gunnar Bjork, Jose L. Romero, Andrei B. Klimov, Luis L. Sanchez-Soto |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0608173 |
| URL | https://arxiv.org/abs/quant-ph/0608173 |
| DOI | 10.1364/JOSAB.24.000371 |
| Journal | J. Opt. Soc. Am. B 24, 371--378 (2007) |
Abstract
Mutually unbiased bases and discrete Wigner functions are closely, but not uniquely related. Such a connection becomes more interesting when the Hilbert space has a dimension that is a power of a prime $N=d^n$, which describes a composite system of $n$ qudits. Hence, entanglement naturally enters the picture. Although our results are general, we concentrate on the simplest nontrivial example of dimension $N=8=2^3$. It is shown that the number of fundamentally different Wigner functions is severely limited if one simultaneously imposes translational covariance and that the generating operators consist of rotations around two orthogonal axes, acting on the individual qubits only.
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"abstract": "Mutually unbiased bases and discrete Wigner functions are closely, but not\nuniquely related. Such a connection becomes more interesting when the Hilbert\nspace has a dimension that is a power of a prime $N=d^n$, which describes a\ncomposite system of $n$ qudits. Hence, entanglement naturally enters the\npicture. Although our results are general, we concentrate on the simplest\nnontrivial example of dimension $N=8=2^3$. It is shown that the number of\nfundamentally different Wigner functions is severely limited if one\nsimultaneously imposes translational covariance and that the generating\noperators consist of rotations around two orthogonal axes, acting on the\nindividual qubits only.",
"arxiv_id": "quant-ph/0608173",
"authors": [
"Gunnar Bjork",
"Jose L. Romero",
"Andrei B. Klimov",
"Luis L. Sanchez-Soto"
],
"categories": [
"quant-ph"
],
"doi": "10.1364/JOSAB.24.000371",
"journal_ref": "J. Opt. Soc. Am. B 24, 371--378 (2007)",
"title": "Mutually unbiased bases and discrete Wigner functions",
"url": "https://arxiv.org/abs/quant-ph/0608173"
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