dorsal/arxiv
View SchemaQuantum Communication Through a Spin-Ring with Twisted Boundary Conditions
| Authors | S. Bose, B. -Q. Jin, V. E. Korepin |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0409134 |
| URL | https://arxiv.org/abs/quant-ph/0409134 |
| DOI | 10.1103/PhysRevA.72.022345 |
| Journal | Phys. Rev. A 72, 022345 (2005) |
Abstract
We investigate quantum communication between the sites of a spin-ring with twisted boundary conditions. Such boundary conditions can be achieved by a flux through the ring. We find that a non-zero twist can improve communication through finite odd numbered rings and enable high fidelity multi-party quantum communication through spin rings (working near perfectly for rings of 5 and 7 spins). We show that in certain cases, the twist results in the complete blockage of quantum information flow to a certain site of the ring. This effect can be exploited to interface and entangle a flux qubit and a spin qubit without embedding the latter in a magnetic field.
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"abstract": "We investigate quantum communication between the sites of a spin-ring with\ntwisted boundary conditions. Such boundary conditions can be achieved by a flux\nthrough the ring. We find that a non-zero twist can improve communication\nthrough finite odd numbered rings and enable high fidelity multi-party quantum\ncommunication through spin rings (working near perfectly for rings of 5 and 7\nspins). We show that in certain cases, the twist results in the complete\nblockage of quantum information flow to a certain site of the ring. This effect\ncan be exploited to interface and entangle a flux qubit and a spin qubit\nwithout embedding the latter in a magnetic field.",
"arxiv_id": "quant-ph/0409134",
"authors": [
"S. Bose",
"B. -Q. Jin",
"V. E. Korepin"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.72.022345",
"journal_ref": "Phys. Rev. A 72, 022345 (2005)",
"title": "Quantum Communication Through a Spin-Ring with Twisted Boundary Conditions",
"url": "https://arxiv.org/abs/quant-ph/0409134"
},
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