Electric-field noise and carbon diffusion on Au(110)

被引：0

作者：

Kim, E. ^{[1
]}

Safavi-Naini, A. ^{[2
]}

Hite, D. A. ^{[3
]}

Mckay, K. S. ^{[3
]}

Pappas, D. P. ^{[3
]}

Weck, P. F. ^{[4
]}

Sadeghpour, H. R. ^{[5
]}

机构：

[1] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA

[2] JILA, 440 Univ Ave, Boulder, CO 80302 USA

[3] NIST, 325 Broadway, Boulder, CO 80305 USA

[4] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA

[5] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA

来源：

XXX INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC, AND ATOMIC COLLISIONS (ICPEAC2017) | 2017年 / 875卷

关键词：

D O I：

10.1088/1742-6596/875/12/112013

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The decoherence of trapped-ion quantum gates due to heating of their motional modes is a fundamen-tal science and engineering problem. This heating is attributed to electric-field noise arising from the trap-electrode surfaces. We have investigated the origin of this noise by focusing on the diffusion of carbon-containing adsorbates on the Au(110) surface. We show how the carbon adatom diffusion on the gold surface changes the energy landscape, and how the adatom dipole moment varies with the diffusive motion. A simple model for the diffusion noise, which varies quadratically with the variation of the dipole moment, predicts a noise spectrum, in accord with the measured values.

引用

页数：1

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