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arXiv · 1610.00206

Surface-electrode trap with an integrated permanent magnet for generating a magnetic-field gradient at trapped ions

Yuji Kawai·Kenji Shimizu·Atsushi Noguchi·Shinji Urabe·Utako Tanaka
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Abstract

We report on a surface-electrode trap with SmCo magnets arranged in a quadrupole configuration underneath the trap electrode. Because the distance between the magnets and the trapped ions can be as little as several hundred micrometers, a large magnetic field is produced without any heat management. The magnetic-field gradient was measured using the Zeeman splitting of a single trapped $^{40}$Ca$^+$ ion at several positions, and a field gradient of 36 T/m was obtained. Such a field gradient is useful for the generation of a state-dependent force, which is important for quantum simulation and/or quantum gate operation using radio-frequency or microwave radiation.

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Yuji Kawai, Kenji Shimizu, Atsushi Noguchi, Shinji Urabe, Utako Tanaka. 2016-10-01. Surface-electrode trap with an integrated permanent magnet for generating a magnetic-field gradient at trapped ions. https://doi.org/10.1088/1361-6455%2F50%2F2%2F025501

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