.png){kind=icon}
返回
Electron spin coherence on a solid neon surface
.png){kind=icon}
OA
AI
DOI：10.1088/2058-9565/ac82c3.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
A single electron floating on the surface of a condensed noble-gas liquid or solid can act as a spin qubit with ultralong coherence time, thanks to the extraordinary purity of such systems. Previous studies suggest that the electron spin coherence time on a superfluid helium (He) surface can exceed 100 s. In this paper, we present theoretical studies of the electron spin coherence on a solid neon (Ne) surface, motivated by our recent experimental realization of single-electron charge qubit on solid Ne. The major spin decoherence mechanisms investigated include the fluctuating Ne diamagnetic susceptibility due to thermal phonons, the fluctuating thermal current in normal metal electrodes, and the quasi-statically fluctuating nuclear spins of the Ne-21 ensemble. We find that at a typical experimental temperature about 10 mK in a fully superconducting device, the electron spin decoherence is dominated by the third mechanism via electron-nuclear spin-spin interaction. For natural Ne with 2700 ppm abundance of Ne-21, the estimated inhomogeneous dephasing time T-2* is around 0.16 ms, already better than most semiconductor quantum-dot spin qubits. For commercially available, isotopically purified Ne with 1 ppm of Ne-21, T-2* can be 0.43 s. Under the application of Hahn echoes, the coherence time T-2 can be improved to 30 ms for natural Ne and 81 s for purified Ne. Therefore, the single-electron spin qubits on solid Ne can serve as promising new spin qubits.
Keyword:
coherence
decoherence
qubit
electron spin
nuclear spin
solid neon
quantum computing
期刊
IF:
5
论文数:
1.4K
被引数:
5.1K
机构
引用论文
分享收藏The classical and quantum theory of thermal magnetic noise, with applications in spintronics and quantum microscopy热磁噪声的经典和量子理论及其在自旋电子学和量子显微镜中的应用.png)
PROCEEDINGS OF THE IEEE
PROCEEDINGS OF THE IEEEIF25.9
PREAI
分享收藏Quantum electronics and optics at the interface of solid neon and superfluid helium固体氖和超流体氦界面处的量子电子学和光学
OAAI
OAAI分享收藏Twenty-three-millisecond electron spin coherence of erbium ions in a natural-abundance crystalSCIENCE ADVANCESOAAI
SCIENCE ADVANCESIF12.5
OAAI分享收藏Decoherence and dynamical decoupling control of nitrogen vacancy center electron spins in nuclear spin bathsPHYSICAL REVIEW BOAAI
PHYSICAL REVIEW BIF3.7
OAAI分享收藏
查看更多内容