dorsal/arxiv
View SchemaSuppression of arbitrary internal coupling in a quantum register
| Authors | Marcus Stollsteimer, Guenter Mahler |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0107059 |
| URL | https://arxiv.org/abs/quant-ph/0107059 |
| DOI | 10.1103/PhysRevA.64.052301 |
| Journal | Phys. Rev. A 64, 052301 (2001) |
Abstract
For the implementation of a quantum computer it is necessary to exercise complete control over the Hamiltonian of the used physical system. For NMR quantum computing the effectively acting Hamiltonian can be manipulated via pulse sequences. Here we examine a register consisting of N selectively addressable spins with pairwise coupling between each spin pair. We show that complete decoupling of the spins is possible independent of the particular form of the spin-spin interaction. The proposed method based on orthogonal arrays is efficient in the sense that the effort regarding time and amount of pulses increases only polynomially with the size N of the register. However, the effect of external control errors in terms of inaccurate control pulses eventually limits the achievable precision.
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"abstract": "For the implementation of a quantum computer it is necessary to exercise\ncomplete control over the Hamiltonian of the used physical system. For NMR\nquantum computing the effectively acting Hamiltonian can be manipulated via\npulse sequences. Here we examine a register consisting of N selectively\naddressable spins with pairwise coupling between each spin pair. We show that\ncomplete decoupling of the spins is possible independent of the particular form\nof the spin-spin interaction. The proposed method based on orthogonal arrays is\nefficient in the sense that the effort regarding time and amount of pulses\nincreases only polynomially with the size N of the register. However, the\neffect of external control errors in terms of inaccurate control pulses\neventually limits the achievable precision.",
"arxiv_id": "quant-ph/0107059",
"authors": [
"Marcus Stollsteimer",
"Guenter Mahler"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.64.052301",
"journal_ref": "Phys. Rev. A 64, 052301 (2001)",
"title": "Suppression of arbitrary internal coupling in a quantum register",
"url": "https://arxiv.org/abs/quant-ph/0107059"
},
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