4.8 Article

Strong photon coupling to the quadrupole moment of an electron in a solid-state qubit

期刊

NATURE PHYSICS
卷 16, 期 6, 页码 642-+

出版社

NATURE PUBLISHING GROUP
DOI: 10.1038/s41567-020-0862-4

关键词

-

资金

  1. Swiss National Science Foundation through the National Center of Competence in Research (NCCR) Quantum Science and Technology
  2. Vannevar Bush Faculty Fellowship programme - Basic Research Office of the Assistant Secretary of Defense for Research and Engineering
  3. Office of Naval Research [N00014-15-1-0029]
  4. Army Research Office (ARO) [W911NF-15-1-0149, W911NF-17-1-0274]
  5. DFG [SFB 767]

向作者/读者索取更多资源

The fundamental concept of light-matter interaction is routinely realized by coupling the quantized electric field in a cavity to the dipole moment of a real or an artificial atom. A recent proposal(1,2), motivated by the prospect of overcoming the decohering effects of distant charge fluctuations, suggests that introduction of and coupling to an electric quadrupole moment of a single electron can be achieved by confining it in a triple quantum dot. Here, we show an experimental realization of this concept by connecting a superconducting microwave resonator to the middle of the three dots, such that the dipole coupling becomes negligible. We demonstrate strong coupling to the electron quadrupole moment and determine that the coherence of our system is limited by short-range charge noise. Our experiment enables the construction and detection of a complex electronic state of a single electron in a solid-state environment that does not exist as such for a free electron. Coupling of the quadrupole moment of an electron in a triple quantum dot to photons has been predicted to be a good platform for reducing the effect of charge noise on the decoherence time of a qubit. Here, the authors create such a coupling.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据