dorsal/arxiv
View SchemaSeparability and distillability in composite quantum systems -a primer-
| Authors | M. Lewenstein, D. Bruss, J. I. Cirac, B. Kraus, M. Kus, J. Samsonowicz, A. Sanpera, R. Tarrach |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0006064 |
| URL | https://arxiv.org/abs/quant-ph/0006064 |
| DOI | 10.1080/09500340008232176 |
| Journal | Journal of Modern Optics, 47, 2841 (2000) |
Abstract
Quantum mechanics is already 100 years old, but remains alive and full of challenging open problems. On one hand, the problems encountered at the frontiers of modern theoretical physics like Quantum Gravity, String Theories, etc. concern Quantum Theory, and are at the same time related to open problems of modern mathematics. But even within non-relativistic quantum mechanics itself there are fundamental unresolved problems that can be formulated in elementary terms. These problems are also related to challenging open questions of modern mathematics; linear algebra and functional analysis in particular. Two of these problems will be discussed in this article: a) the separability problem, i.e. the question when the state of a composite quantum system does not contain any quantum correlations or entanglement and b) the distillability problem, i.e. the question when the state of a composite quantum system can be transformed to an entangled pure state using local operations (local refers here to component subsystems of a given system). Although many results concerning the above mentioned problems have been obtained (in particular in the last few years in the framework of Quantum Information Theory), both problems remain until now essentially open. We will present a primer on the current state of knowledge concerning these problems, and discuss the relation of these problems to one of the most challenging questions of linear algebra: the classification and characterization of positive operator maps.
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"abstract": "Quantum mechanics is already 100 years old, but remains alive and full of\nchallenging open problems. On one hand, the problems encountered at the\nfrontiers of modern theoretical physics like Quantum Gravity, String Theories,\netc. concern Quantum Theory, and are at the same time related to open problems\nof modern mathematics. But even within non-relativistic quantum mechanics\nitself there are fundamental unresolved problems that can be formulated in\nelementary terms. These problems are also related to challenging open questions\nof modern mathematics; linear algebra and functional analysis in particular.\nTwo of these problems will be discussed in this article: a) the separability\nproblem, i.e. the question when the state of a composite quantum system does\nnot contain any quantum correlations or entanglement and b) the distillability\nproblem, i.e. the question when the state of a composite quantum system can be\ntransformed to an entangled pure state using local operations (local refers\nhere to component subsystems of a given system).\n Although many results concerning the above mentioned problems have been\nobtained (in particular in the last few years in the framework of Quantum\nInformation Theory), both problems remain until now essentially open. We will\npresent a primer on the current state of knowledge concerning these problems,\nand discuss the relation of these problems to one of the most challenging\nquestions of linear algebra: the classification and characterization of\npositive operator maps.",
"arxiv_id": "quant-ph/0006064",
"authors": [
"M. Lewenstein",
"D. Bruss",
"J. I. Cirac",
"B. Kraus",
"M. Kus",
"J. Samsonowicz",
"A. Sanpera",
"R. Tarrach"
],
"categories": [
"quant-ph"
],
"doi": "10.1080/09500340008232176",
"journal_ref": "Journal of Modern Optics, 47, 2841 (2000)",
"title": "Separability and distillability in composite quantum systems -a primer-",
"url": "https://arxiv.org/abs/quant-ph/0006064"
},
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