Markus Müller et al 2008 New J. Phys. 10 093009 doi:10.1088/1367-2630/10/9/093009
Trapped Rydberg ions: from spin chains to fast quantum gates
Markus Müller1,3, Linmei Liang2, Igor Lesanovsky1 and Peter Zoller1
Show affiliationsWe study the dynamics of Rydberg ions trapped in a linear Paul trap, and discuss the properties of ionic Rydberg states in the presence of the static and time-dependent electric fields constituting the trap. The interactions in a system of many ions are investigated and coupled equations of the internal electronic states and the external oscillator modes of a linear ion chain are derived. We show that strong dipole–dipole interactions among the ions can be achieved by microwave dressing fields. Using low-angular momentum states with large quantum defect, the internal dynamics can be mapped onto an effective spin model of a pair of dressed Rydberg states that describes the dynamics of Rydberg excitations in the ion crystal. We demonstrate that excitation transfer through the ion chain can be achieved on a nanosecond timescale and discuss the implementation of a fast two-qubit gate in the ion chain.
- PACS
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03.67.Lx Quantum computation architectures and implementations
- Subjects
- Dates
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Issue 9 (September 2008)
Received 20 April 2008
Published 10 September 2008
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Trapped Rydberg ions: from spin chains to fast quantum gates
Markus Müller et al 2008 New J. Phys. 10 093009
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