dorsal/arxiv
View SchemaQuantum Teleportation with Continuous Variables: a survey
| Authors | Stefano Pirandola, Stefano Mancini |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0604027 |
| URL | https://arxiv.org/abs/quant-ph/0604027 |
| DOI | 10.1134/S1054660X06100057 |
| Journal | Laser Physics 16, 1418 (2006) |
Abstract
Very recently we have witnessed a new development of quantum information, the so-called continuous variable (CV) quantum information theory. Such a further development has been mainly due to the experimental and theoretical advantages offered by CV systems, i.e., quantum systems described by a set of observables, like position and momentum, which have a continuous spectrum of eigenvalues. According to this novel trend, quantum information protocols like quantum teleportation have been suitably extended to the CV framework. Here, we briefly review some mathematical tools relative to CV systems and we consequently develop the concepts of quantum entanglement and teleportation in the CV framework, by analogy with the qubit-based approach. Some connections between teleportation fidelity and entanglement properties of the underlying quantum channel are inspected. Next, we face the study of CV quantum teleportation networks where more users share a multipartite state and an arbitrary pair of them performs quantum teleportation. In this context, we show alternative protocols and we investigate the optimal strategy that maximizes the performance of the network.
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"abstract": "Very recently we have witnessed a new development of quantum information, the\nso-called continuous variable (CV) quantum information theory. Such a further\ndevelopment has been mainly due to the experimental and theoretical advantages\noffered by CV systems, i.e., quantum systems described by a set of observables,\nlike position and momentum, which have a continuous spectrum of eigenvalues.\nAccording to this novel trend, quantum information protocols like quantum\nteleportation have been suitably extended to the CV framework. Here, we briefly\nreview some mathematical tools relative to CV systems and we consequently\ndevelop the concepts of quantum entanglement and teleportation in the CV\nframework, by analogy with the qubit-based approach. Some connections between\nteleportation fidelity and entanglement properties of the underlying quantum\nchannel are inspected. Next, we face the study of CV quantum teleportation\nnetworks where more users share a multipartite state and an arbitrary pair of\nthem performs quantum teleportation. In this context, we show alternative\nprotocols and we investigate the optimal strategy that maximizes the\nperformance of the network.",
"arxiv_id": "quant-ph/0604027",
"authors": [
"Stefano Pirandola",
"Stefano Mancini"
],
"categories": [
"quant-ph",
"physics.optics"
],
"doi": "10.1134/S1054660X06100057",
"journal_ref": "Laser Physics 16, 1418 (2006)",
"title": "Quantum Teleportation with Continuous Variables: a survey",
"url": "https://arxiv.org/abs/quant-ph/0604027"
},
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