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Quantum gates using electronic and nuclear spins of Yb+ in a magnetic field gradient |
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| Authors: | Wang K L Johanning M Feng M Mintert F Wunderlich C |
| Institution: | (1) Center for Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Dr, Tallahassee, FL 32310, USA;(2) London Center for Nanotechnology and Department of Physics and Astronomy, University College London, London, WC1H 0AH, UK;(3) Department of Physics and Center for Terahertz Science and Technology, University of California, Santa Barbara, CA 93106, USA;(4) Department of Physics, University of Utah, Salt Lake City, UT, 84112, USA;(5) Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294-1170, USA |
| Abstract: | An efficient scheme is proposed to carry out gate operations on an array of trapped Yb+ ions, based on a previous proposal using both electronic and nuclear degrees of freedom in a magnetic field gradient. For this purpose we consider the Paschen-Back regime (strong magnetic field) and employ a high-field approximation in this treatment. We show the possibility to suppress the unwanted coupling between the electron spins by appropriately swapping states between electronic and nuclear spins. The feasibility of generating the required high magnetic field is discussed. |
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