dorsal/arxiv
View SchemaAlternative representation of N \times N density matrix
| Authors | Stanislaw Kryszewski, Mateusz Zachcial |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0602065 |
| URL | https://arxiv.org/abs/quant-ph/0602065 |
Abstract
We use polarization operators known from quantum theory of angular momentum to expand the $N \times N$ dimensional density operators. Thereby, we construct generalized Bloch vectors representing density matrices. We study their properties and derive positivity conditions for any $N$. We also apply the procedure to study Bloch vector space for a qubit and a qutrit.
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"abstract": "We use polarization operators known from quantum theory of angular momentum\nto expand the $N \\times N$ dimensional density operators. Thereby, we construct\ngeneralized Bloch vectors representing density matrices. We study their\nproperties and derive positivity conditions for any $N$. We also apply the\nprocedure to study Bloch vector space for a qubit and a qutrit.",
"arxiv_id": "quant-ph/0602065",
"authors": [
"Stanislaw Kryszewski",
"Mateusz Zachcial"
],
"categories": [
"quant-ph"
],
"title": "Alternative representation of N \\times N density matrix",
"url": "https://arxiv.org/abs/quant-ph/0602065"
},
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