Hybrid Quantum System with Nitrogen-Vacancy Centers in Diamond Coupled to Surface-Phonon Polaritons in Piezomagnetic Superlattices
Hybrid Quantum System with Nitrogen-Vacancy Centers in Diamond Coupled to Surface-Phonon Polaritons in Piezomagnetic Superlattices
复制标题
金刚石中氮空位中心与压磁超晶格中表面声子极化子耦合的混合量子系统
DOI：
10.1103/physrevapplied.10.024011
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发表时间：
2018-08-10
影响因子：
4.6
通讯作者：
Nori, Franco
中科院分区：
文献类型：
--
作者：
Li, Peng-Bo;Nori, Franco
在基于自旋的混合量子系统中，集体自旋激发的空间模式可以用来编码量子位寄存器。然而，在超导电路中，微波光子的波长比自旋综的尺寸大得多，这使得直接耦合变得复杂并限制了信息处理。这个问题可以通过利用压磁超晶格中表面声子极化子的亚波长特性来解决，通过将它们耦合到金刚石中N- V$自旋的综上。考虑到压电超晶格优异的可持续性和可扩展性，这种方法为创新的混合量子器件开辟了道路。
In spin-based hybrid quantum systems, the spatial modes of collective spin excitations can be used to encode a register of qubits. However, in superconducting circuits the wavelengths of microwave photons are much larger than the dimensions of the spin ensembles, which complicates direct coupling and limits information processing. This problem could be solved by exploiting the subwavelength nature of surface phonon-polaritons in a piezomagnetic superlattice, via coupling them to an ensemble of N-$V$ spins in diamond. Considering the excellent tenability and scalability of piezoactive superlattices, this approach opens routes to innovative hybrid quantum devices.