dorsal/arxiv
View SchemaExploring Hilbert Space: accurate characterisation of quantum information
| Authors | A. G. White, D. F. V. James, W. J. Munro, P. G. Kwiat |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0108088 |
| URL | https://arxiv.org/abs/quant-ph/0108088 |
| DOI | 10.1103/PhysRevA.65.012301 |
| Journal | Physical Review A 65, 012301 (2002) |
Abstract
We report the creation of a wide range of quantum states with controllable degrees of entanglement and entropy using an optical two-qubit source based on spontaneous parametric downconversion. The states are characterised using measures of entanglement and entropy determined from tomographically determined density matrices. The Tangle-Entropy plane is introduced as a graphical representation of these states, and the theoretic upper bound for the maximum amount of entanglement possible for a given entropy is presented. Such a combination of general quantum state creation and accurate characterisation is an essential prerequisite for quantum device development.
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"abstract": "We report the creation of a wide range of quantum states with controllable\ndegrees of entanglement and entropy using an optical two-qubit source based on\nspontaneous parametric downconversion. The states are characterised using\nmeasures of entanglement and entropy determined from tomographically determined\ndensity matrices. The Tangle-Entropy plane is introduced as a graphical\nrepresentation of these states, and the theoretic upper bound for the maximum\namount of entanglement possible for a given entropy is presented. Such a\ncombination of general quantum state creation and accurate characterisation is\nan essential prerequisite for quantum device development.",
"arxiv_id": "quant-ph/0108088",
"authors": [
"A. G. White",
"D. F. V. James",
"W. J. Munro",
"P. G. Kwiat"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.65.012301",
"journal_ref": "Physical Review A 65, 012301 (2002)",
"title": "Exploring Hilbert Space: accurate characterisation of quantum information",
"url": "https://arxiv.org/abs/quant-ph/0108088"
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