Development of NiFe micro magnet stripes for solid-state NMR quantum computing

A. Takahashi, Dong F. Wang, Yoshinori Matsumoto, Kohei M Itoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

An all-silicon quantum computer architecture using 29Si nuclear spins qubits buried in the spin-free matrix of 28Si has been suggested [1]. It requires an array of micro-magnets which impose a large magnetic field gradient along the chain of the 29Si nuclear spins qubits, which allow for the NMR frequency difference between two neighboring 29Si qubits. In this work, we report on the successful fabrication of an array of NiFe (Ni45%-Fe55%) micro-magnet stripes (the cross-section 1.2x1 μm 2) formed directly on natural Si wafers using reactive ion etching (RIE) with the NH3-CO-Xe gas mixture. The magnetic field gradient calculation with the finite element method with the geometry of the fabricated NiFe stripes predicts the gradient of 0.4T/μm at the distance 100nm away from the micro-magnet when the stripes are placed in the static magnetic field of 6T for the NMR measurement. The magnetic property of fabricated NiFe stripes was also measured with SQUID, and confirmed that saturation magnetization hadn't been deteriorated through RIE process.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsJ.-C. Chiao, D.N. Jamieson, L. Faraone, A.S. Dzurak
Pages81-88
Number of pages8
Volume5650
DOIs
Publication statusPublished - 2005
EventMicro- and Nanotechnology: Materials, Processes, Packaging, and Systems II - Sydney, Australia
Duration: 2004 Dec 132004 Dec 15

Other

OtherMicro- and Nanotechnology: Materials, Processes, Packaging, and Systems II
CountryAustralia
CitySydney
Period04/12/1304/12/15

Fingerprint

quantum computation
Magnets
magnets
Reactive ion etching
Nuclear magnetic resonance
Magnetic fields
solid state
nuclear spin
gradients
nuclear magnetic resonance
magnetic fields
etching
architecture (computers)
Quantum computers
Computer architecture
quantum computers
SQUIDs
Saturation magnetization
Gas mixtures
gas mixtures

Keywords

  • CO/NH
  • Magnetic field gradient
  • Magnetic simulation
  • Micro-magnet
  • Microfabrication
  • Micromachining
  • NiFe
  • NMR quantum computing
  • Reactive ion etching (RIE)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Takahashi, A., Wang, D. F., Matsumoto, Y., & Itoh, K. M. (2005). Development of NiFe micro magnet stripes for solid-state NMR quantum computing. In J-C. Chiao, D. N. Jamieson, L. Faraone, & A. S. Dzurak (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5650, pp. 81-88). [16] https://doi.org/10.1117/12.582248

Development of NiFe micro magnet stripes for solid-state NMR quantum computing. / Takahashi, A.; Wang, Dong F.; Matsumoto, Yoshinori; Itoh, Kohei M.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / J.-C. Chiao; D.N. Jamieson; L. Faraone; A.S. Dzurak. Vol. 5650 2005. p. 81-88 16.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Takahashi, A, Wang, DF, Matsumoto, Y & Itoh, KM 2005, Development of NiFe micro magnet stripes for solid-state NMR quantum computing. in J-C Chiao, DN Jamieson, L Faraone & AS Dzurak (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5650, 16, pp. 81-88, Micro- and Nanotechnology: Materials, Processes, Packaging, and Systems II, Sydney, Australia, 04/12/13. https://doi.org/10.1117/12.582248
Takahashi A, Wang DF, Matsumoto Y, Itoh KM. Development of NiFe micro magnet stripes for solid-state NMR quantum computing. In Chiao J-C, Jamieson DN, Faraone L, Dzurak AS, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5650. 2005. p. 81-88. 16 https://doi.org/10.1117/12.582248
Takahashi, A. ; Wang, Dong F. ; Matsumoto, Yoshinori ; Itoh, Kohei M. / Development of NiFe micro magnet stripes for solid-state NMR quantum computing. Proceedings of SPIE - The International Society for Optical Engineering. editor / J.-C. Chiao ; D.N. Jamieson ; L. Faraone ; A.S. Dzurak. Vol. 5650 2005. pp. 81-88
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