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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 71 (2000), S. 27-36 
    ISSN: 1432-0630
    Keywords: PACS: 03.67.Lx; 76.60.Es; 75.30.Ds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Nuclear magnetic resonance (NMR) quantum computation in a crystal lattice holds more promise for scalability than its solution NMR counterpart, but dephasing is a severe concern. Pulse sequence refocusing can help bring the qubit dephasing time closer to the limit of the intrinsic decoherence time, but the intrinsic transverse relaxation time (T2) and the longitudinal relaxation time (T1) of the crystal must be sufficiently long for a successful implementation. We discuss these time scales and their relation to parameters relevant to quantum computation for several crystal types, discussing in detail the examples of CaF2, MnF2, and CeP. Included in the calculation of coherence times for CeP is the development of spin-wave spectra in a type-1 antiferromagnetic FCC lattice.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 71 (2000), S. 11-17 
    ISSN: 1432-0630
    Keywords: PACS: 03.67.Lx; 76.60.Pc; 85.70.w
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. A quantum computer using nuclear spins in a crystal lattice requires a method for addressing individual quantum bits. This identification can be achieved with a spatially varying magnetic field. Spins at different lattice sites can have distinguishable Zeeman frequencies allowing initialization, logic operations, and measurements to be performed through radio frequency (rf) pulse techniques. Here, we present magnet designs that have gradients between 1 and 20 T/μm, which are necessary to realize quantum computation with particular crystals.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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