Developments in quantum information processing by nuclear magnetic resonance: Use of quadrupolar and dipolar couplings

Pramana

Anil Kumar1 2²  T S Mahesh²  K V R Murali1²  K V Ramanathan¹  Neeraj Sinha² 

[1] Sophisticated Instruments Facility, Indian Institute of Science, Bangalore 560 012, India$$;Department of Physics, Indian Institute of Science, Bangalore 560 012, India$$

关键词: Quantum information processing;    qubit;    nuclear magnetic resonance quantum computing.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown