论文标题
量子嵌入的超级遗产
Quantum Embedded Superstates
论文作者
论文摘要
光学超级腔模式（超级恒星），即，从开放腔的两个非正交模式的强耦合中出现的杂交模式可以支持与continuum continuum in continuum（quasi-bic）相关的散射光谱中的Ultranarow线（Quasi-Bic）。这些模式非常感兴趣地传感应用，因为它们能够具有前所未有的灵敏度的紧凑系统。但是，这些准BIC传感器遵守射击量极限，只能在量子传感器中克服。在这里，我们揭示了一个三级量子系统（例如原子，量子点，超导二极管）可以量身定制，以支撑嵌入式超级恒星的量子类似物，该嵌入式超级恒星在强耦合方案中具有无符合条件的发射线。值得注意的是，我们证明了这种系统与空腔（例如等离子或介电纳米颗粒，微腔，微波谐振器）的耦合可实现具有显着降低噪声的传感性能。我们的结果可以应用于从微波超导体到冷原子和量子点的大量量子平台，为量子传感和计算打开了有趣的机会。
Optical supercavity modes (superstates), i.e., hybrid modes emerging from the strong coupling of two nonorthogonal modes of an open cavity, can support ultranarrow lines in scattering spectra associated with quasi bound states in the continuum (quasi-BIC). These modes are of great interest for sensing applications as they enable compact systems with unprecedented sensitivity. However, these quasi-BIC sensors obey the shot-noise limit, which may be overcome only in quantum sensors. Here, we unveil that a three-level quantum system (e.g., atom, quantum dot, superconducting qubit) can be tailored to support the quantum analog of an embedded superstate with an unboundedly narrow emission line in the strong coupling regime. Remarkably, we demonstrate that the coupling of such a system with a cavity (e.g., plasmonic or dielectric nanoparticle, microcavity, microwave resonator) enables sensing properties with significantly reduced noise. Our results can be applied to a plethora of quantum platforms from microwave superconductors to cold atoms and quantum dots, opening interesting opportunities for quantum sensing and computing.
