arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2305.08306quant-ph
收藏

金刚石光机腔与色心用于微波到光量子接口

Diamond optomechanical cavity with a color center for microwave-to-optical quantum interfaces

Byunggi Kim, Hodaka Kurokawa, Katsuta Sakai, Kazuki Koshino, Hideo Kosaka, Masahiro Nomura

AI总结:

本文提出一种基于金刚石光机晶体腔与色心强耦合的高效微波-光学量子转导方案,理论转换效率达15%,为量子网络提供关键接口。

摘要:

微波光子与光学光子之间的量子转导在远程量子比特间的量子通信中扮演关键角色。尽管利用光机接口产生通信光子的量子转导方案已被成功演示,但低转换效率仍是实现由多个量子比特组成的量子网络的障碍。在此,我们提出一种高效的量子转导方案,利用一维金刚石光机晶体腔,调谐至色心发射频率,无需光机耦合。该光机晶体腔在集中腔区域附近集成了薄氮化铝(AlN)压电耦合器,同时保持超小的机械和光学模式体积,分别约为1.5×10⁻⁴和~0.2(λ/n)³。相干色心电子的能级通过高达16.4MHz的强机械模式-色心电子耦合速率进行操控。在我们的系统中,理论上预测,结合现有技术,单个微波光子到光学光子的布居转换效率可达15%。相干转换效率超过10%,且具有合理的纯衰减时间T₂* > 10 ns。我们的结果表明,与光机晶体腔强耦合的原子色心将提供一个高效的量子转导平台。

英文摘要:

Quantum transduction between microwave and optical photons plays a key role in quantum communication among remote qubits. Although the quantum transduction schemes generating communication photons have been successfully demonstrated by using optomechanical interfaces, the low conversion efficiency remains an obstacle to the implementation of a quantum network consisting of multiple qubits. Here, we present an efficient quantum transduction scheme using a one-dimensional diamond optomechanical crystal cavity tuned at a color-center emission without optomechanical coupling. The optomechanical crystal cavity incorporates a thin aluminum nitride (AlN) pad piezoelectric coupler near the concentrator cavity region, while retaining ultrasmall mechanical and optical mode volumes of about 1.5 \times 10^{-4} and ~0.2(λ/n)^3, respectively. The energy level of a coherent color-center electron is manipulated by a strong mechanical-mode-color-center electron-coupling rate up to 16.4MHz. In our system, we theoretically predict that the population-conversion efficiency from a single microwave photon into an optical photon can reach 15% combined with current technologies. The coherent conversion efficiency is over 10% with a reasonably pure decay time of T^2_{*} > 10 ns. Our results imply that an atomic color center strongly coupled to the optomechanical crystal cavity will offer a highly efficient quantum transduction platform.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑