Authors: Eric Hyyppä, Antti Vepsäläinen, Miha Papič, Chun Fai Chan, Sinan Inel, Alessandro Landra, Wei Liu, Jürgen Luus, Fabian Marxer, Caspar Ockeloen-Korppi, Sebastian Orbell, Brian Tarasinski, Johannes Heinsoo

Published on: February 27, 2024

Impact Score: 7.8

Arxiv code: Arxiv:2402.17757

Summary

• What is new: Introduction of Fourier ansatz spectrum tuning derivative removal by adiabatic gate (FAST DRAG) and higher-derivative (HD) DRAG methods to reduce leakage errors in quantum logic gates.
• Why this is important: Fast quantum logic gates increase leakage errors in qubits with low anharmonicity, posing a challenge for achieving quantum advantage.
• What the research proposes: Proposed FAST DRAG and HD DRAG methods to shape single-qubit control pulses in the frequency domain, enabling stronger suppression of leakage transitions.
• Results: Implemented $R_X(\\pi/2)$-gates with leakage error below $3.0 \\times 10^{-5}$ and achieved an error per gate of $(1.56 \\pm 0.07)\\times 10^{-4}$ at 7.9-ns gate duration, outperforming conventional pulses.

Technical Details

Technological frameworks used: Quantum logic gates enhancement through frequency domain pulse shaping

Models used: FAST DRAG, HD DRAG

Data used: Experimental results from transmon qubit with an anharmonicity of -212 MHz

Potential Impact

Quantum computing companies, quantum algorithm developers, sectors relying on advanced quantum simulation and encryption technologies

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