dorsal/arxiv
View SchemaQubit Teleportation and Transfer across Antiferromagnetic Spin Chains
| Authors | L. Campos Venuti, C. Degli Esposti Boschi, M. Roncaglia |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0703202 |
| URL | https://arxiv.org/abs/quant-ph/0703202 |
| DOI | 10.1103/PhysRevLett.99.060401 |
| Journal | Phys. Rev. Lett. 99, 060401 (2007) |
Abstract
We explore the capability of spin-1/2 chains to act as quantum channels for both teleportation and transfer of qubits. Exploiting the emergence of long-distance entanglement in low-dimensional systems [Phys. Rev. Lett. 96, 247206 (2006)], here we show how to obtain high communication fidelities between distant parties. An investigation of protocols of teleportation and state transfer is presented, in the realistic situation where temperature is included. Basing our setup on antiferromagnetic rotationally invariant systems, both protocols are represented by pure depolarizing channels. We propose a scheme where channel fidelity close to one can be achieved on very long chains at moderately small temperature.
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"abstract": "We explore the capability of spin-1/2 chains to act as quantum channels for\nboth teleportation and transfer of qubits. Exploiting the emergence of\nlong-distance entanglement in low-dimensional systems [Phys. Rev. Lett. 96,\n247206 (2006)], here we show how to obtain high communication fidelities\nbetween distant parties. An investigation of protocols of teleportation and\nstate transfer is presented, in the realistic situation where temperature is\nincluded. Basing our setup on antiferromagnetic rotationally invariant systems,\nboth protocols are represented by pure depolarizing channels. We propose a\nscheme where channel fidelity close to one can be achieved on very long chains\nat moderately small temperature.",
"arxiv_id": "quant-ph/0703202",
"authors": [
"L. Campos Venuti",
"C. Degli Esposti Boschi",
"M. Roncaglia"
],
"categories": [
"quant-ph",
"cond-mat.str-el"
],
"doi": "10.1103/PhysRevLett.99.060401",
"journal_ref": "Phys. Rev. Lett. 99, 060401 (2007)",
"title": "Qubit Teleportation and Transfer across Antiferromagnetic Spin Chains",
"url": "https://arxiv.org/abs/quant-ph/0703202"
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