Micromotion-Enabled Improvement of Quantum Logic Gates with Trapped Ions
Abstract
The micromotion of ion crystals confined in Paul traps is usually considered an inconvenient nuisance, and is thus typically minimized in high-precision experiments such as high-fidelity quantum gates for quantum information processing (QIP). In this work, we introduce a particular scheme where this behavior can be reversed, making micromotion beneficial for QIP. We show that using laser-driven micromotion sidebands, it is possible to engineer state-dependent dipole forces with a reduced effect of off-resonant couplings to the carrier transition. This allows one, in a certain parameter regime, to devise entangling gate schemes based on geometric phase gates with both a higher speed and a lower error, which is attractive in light of current efforts towards fault-tolerant QIP. We discuss the prospects of reaching the parameters required to observe this micromotion-enabled improvement in experiments with current and future trap designs.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 24, 2017
- Accession Number
- AD1117213
Entities
People
- Alejandro Bermudez
- Markus Mueller
- Philipp Schindler
- Rainer Blatt
- Thomas Monz
Organizations
- Swansea University