Non-thermal nuclear magnetic resonance quantum computing using hyperpolarized xenon

Abstract

Current experiments in liquid-state nuclear magnetic resonance (NMR) quantum computing are limited by low initial polarization. To address this problem, we have investigated the use of optical pumping techniques to enhance the polarization of a 2-qubit NMR quantum computer (13C and 1H in 13CHCl3). We have generalized the procedure for effective pure state preparation in order to efficiently use the increased polarization. With this more flexible scheme, an effective pure state is prepared with polarization enhancement of a factor of 10 compared to the thermal state. An implementation of Grover's quantum search algorithm with a polarization-enhanced spin system is demonstrated. © 2001 American Institute of Physics.