We predict a new quantum electronic structure at the interface between two condensed phases of noble-gas elements: solid neon and superfluid helium. An excess electron injected onto this interface self-confines its wavefunction into a nanometric dome structure. Its size varies with pressure and optical transitions cover a broad mid-infrared spectrum. A collection of such electrons can form a classical Wigner crystal resembling a quantum-dot array on a triangular lattice. Under ultrafast laser illumination, this Wigner crystal can exhibit the quantum optical phenomenon of superradiance in the picosecond time scale. The ultralong spin-coherence time and micron-scale deterministic configurability allow the electrons in this system to serve as quantum information carriers. Their spin states can be controlled and readout by on-chip single-electron devices.

中文翻译：

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固态氖和超流氦界面处的量子电子学和光学

我们在稀有气体元素的两个冷凝相之间的界面处预测了新的量子电子结构：固体氖和超流氦。注入到该界面上的多余电子将其波函数自限为纳米圆顶结构。它的大小随压力而变化，并且光学跃迁涵盖了广泛的中红外光谱。此类电子的集合可以形成经典的维格纳晶体，类似于三角晶格上的量子点阵列。在超快激光照射下，这种维格纳晶体可以在皮秒级的时间内显示出超辐射的量子光学现象。超长的自旋相干时间和微米级确定性可配置性使该系统中的电子可用作量子信息载体。