dorsal/arxiv
View SchemaQuantum state transfer via the ferromagnetic chain in a spatially modulated field
| Authors | T. Shi, Ying Li, Z. Song, C. P. Sun |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0408152 |
| URL | https://arxiv.org/abs/quant-ph/0408152 |
| DOI | 10.1103/PhysRevA.71.032309 |
| Journal | Phys. Rev. A 71, 032309(2005) |
Abstract
We show that a perfect quantum state transmission can be realized through a spin chain possessing a commensurate structure of energy spectrum, which is matched with the corresponding parity. As an exposition of the mirror inversion symmetry discovered by Albanese et. al (quant-ph/0405029), the parity matched the commensurability of energy spectra help us to present the novel pre-engineered spin systems for quantum information transmission. Based on the these theoretical analysis, we propose a protocol of near-perfect quantum state transfer by using a ferromagnetic Heisenberg chain with uniform coupling constant, but an external parabolic magnetic field. The numerical results shows that the initial Gaussian wave packet in this system with optimal field distribution can be reshaped near-perfectly over a longer distance.
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"abstract": "We show that a perfect quantum state transmission can be realized through a\nspin chain possessing a commensurate structure of energy spectrum, which is\nmatched with the corresponding parity. As an exposition of the mirror inversion\nsymmetry discovered by Albanese et. al (quant-ph/0405029), the parity matched\nthe commensurability of energy spectra help us to present the novel\npre-engineered spin systems for quantum information transmission. Based on the\nthese theoretical analysis, we propose a protocol of near-perfect quantum state\ntransfer by using a ferromagnetic Heisenberg chain with uniform coupling\nconstant, but an external parabolic magnetic field. The numerical results shows\nthat the initial Gaussian wave packet in this system with optimal field\ndistribution can be reshaped near-perfectly over a longer distance.",
"arxiv_id": "quant-ph/0408152",
"authors": [
"T. Shi",
"Ying Li",
"Z. Song",
"C. P. Sun"
],
"categories": [
"quant-ph",
"cond-mat.mes-hall"
],
"doi": "10.1103/PhysRevA.71.032309",
"journal_ref": "Phys. Rev. A 71, 032309(2005)",
"title": "Quantum state transfer via the ferromagnetic chain in a spatially modulated field",
"url": "https://arxiv.org/abs/quant-ph/0408152"
},
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