dorsal/arxiv
View SchemaA special simplex in the state space for entangled qudits
| Authors | Bernhard Baumgartner, Beatrix Hiesmayr, Heide Narnhofer |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0610100 |
| URL | https://arxiv.org/abs/quant-ph/0610100 |
| DOI | 10.1088/1751-8113/40/28/S03 |
| Journal | J. Phys. A: Math. Theor. 40 (2007) 7919-7938 |
Abstract
Focus is on two parties with Hilbert spaces of dimension d, i.e. "qudits". In the state space of these two possibly entangled qudits an analogue to the well known tetrahedron with the four qubit Bell states at the vertices is presented. The simplex analogue to this magic tetrahedron includes mixed states. Each of these states appears to each of the two parties as the maximally mixed state. Some studies on these states are performed, and special elements of this set are identified. A large number of them is included in the chosen simplex which fits exactly into conditions needed for teleportation and other applications. Its rich symmetry - related to that of a classical phase space - helps to study entanglement, to construct witnesses and perform partial transpositions. This simplex has been explored in details for d=3. In this paper the mathematical background and extensions to arbitrary dimensions are analysed.
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"abstract": "Focus is on two parties with Hilbert spaces of dimension d, i.e. \"qudits\". In\nthe state space of these two possibly entangled qudits an analogue to the well\nknown tetrahedron with the four qubit Bell states at the vertices is presented.\nThe simplex analogue to this magic tetrahedron includes mixed states. Each of\nthese states appears to each of the two parties as the maximally mixed state.\nSome studies on these states are performed, and special elements of this set\nare identified. A large number of them is included in the chosen simplex which\nfits exactly into conditions needed for teleportation and other applications.\nIts rich symmetry - related to that of a classical phase space - helps to study\nentanglement, to construct witnesses and perform partial transpositions. This\nsimplex has been explored in details for d=3. In this paper the mathematical\nbackground and extensions to arbitrary dimensions are analysed.",
"arxiv_id": "quant-ph/0610100",
"authors": [
"Bernhard Baumgartner",
"Beatrix Hiesmayr",
"Heide Narnhofer"
],
"categories": [
"quant-ph",
"math-ph",
"math.MP"
],
"doi": "10.1088/1751-8113/40/28/S03",
"journal_ref": "J. Phys. A: Math. Theor. 40 (2007) 7919-7938",
"title": "A special simplex in the state space for entangled qudits",
"url": "https://arxiv.org/abs/quant-ph/0610100"
},
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