Fast gates for ion traps by splitting laser pulses
arXiv:1211.7156 · doi:10.1088/1367-2630/15/4/043006
Abstract
We present a fast phase gate scheme that is experimentally achievable and has an operation time more than two orders of magnitude faster than current experimental schemes for low numbers of pulses. The gate time improves with the number of pulses following an inverse power law. Unlike implemented schemes which excite precise motional sidebands, thus limiting the gate timescale, our scheme excites multiple motional states using discrete ultra-fast pulses. We use beam-splitters to divide pulses into smaller components to overcome limitations due to the finite laser pulse repetition rate. This provides gate times faster than proposed theoretical schemes when we optimise a practical setup.
arXiv comment20 pages, 8 figures
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- A Study on Fast Gates for Large-Scale Quantum Simulation with Trapped Ions
- Comparison of ancilla preparation and measurement procedures for the Steane [[7,1,3]] code on a model ion trap quantum computer
- Refocusing two qubit gate noise for trapped ions by composite pulses
- Ultrafast, high repetition rate, ultraviolet, fiber based laser source: application towards Yb+ fast quantum-logic
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- Error-Resilient Fast Entangling Gates for Scalable Ion-Trap Quantum Processors
- Robust Oscillator-Mediated Phase Gates Driven by Low-Intensity Pulses