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      https://www.ias.ac.in/article/fulltext/pram/059/02/0243-0254

    • Keywords

       

      Quantum information processing; qubit; nuclear magnetic resonance quantum computing

    • Abstract

       

      Use of dipolar and quadrupolar couplings for quantum information processing (QIP) by nuclear magnetic resonance (NMR) is described. In these cases, instead of the individual spins being qubits, the 2n energy levels of the spin-system can be treated as an n-qubit system. It is demonstrated that QIP in such systems can be carried out using transition-selective pulses, in CH3CN, 13CH3CN, 7Li (I=3/2) and 133Cs (I=7/2), oriented in liquid crystals yielding 2 and 3 qubit systems. Creation of pseudopure states, implementation of logic gates and arithmetic operations (half-adder and subtractor) have been carried out in these systems using transition-selective pulses.

    • Author Affiliations

       

      Anil Kumar1 2 K V Ramanathan2 T S Mahesh1 Neeraj Sinha1 KVRM Murali1 3

      1. Department of Physics, Indian Institute of Science, Bangalore - 560 012, India
      2. Sophisticated Instruments Facility, Indian Institute of Science, Bangalore - 560 012, India
      3. Media Lab, M.I.T., Cambridge, USA
    • Dates

       
  • Pramana – Journal of Physics | News

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