Ultra-narrow inhomogeneous spectral distribution of telecom-wavelength vanadium centres in isotopically-enriched silicon carbide.
Ultra-narrow inhomogeneous spectral distribution of telecom-wavelength vanadium centres in isotopically-enriched silicon carbide.
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DOI：
10.1038/s41467-023-43923-7
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发表时间：
2023-12-19
影响因子：
16.6
通讯作者：
Bonato, Cristian
中科院分区：
文献类型：
--
作者：
Cilibrizzi, Pasquale;Arshad, Muhammad Junaid;Tissot, Benedikt;Son, Nguyen Tien;Ivanov, Ivan G.;Astner, Thomas;Koller, Philipp;Ghezellou, Misagh;Ul-Hassan, Jawad;White, Daniel;Bekker, Christiaan;Burkard, Guido;Trupke, Michael;Bonato, Cristian
自旋激活量子发射器已成为量子技术的领先平台。然而，它们的主要限制之一是光发射频率的大范围扩展，其通常延伸超过数十GHz。在这里，我们调查单一的V4+钒中心的4 H-SiC，其功能电信波长的发射和相干的S = 1/2自旋状态。我们进行光谱单发射器和报告的观察自旋相关的光学跃迁，自旋光子接口的关键要求。通过设计SiC基质的同位素组成，我们将不同发射器的不均匀光谱分布降低到100 MHz，明显小于任何其他单量子发射器。此外，我们定制的掺杂剂浓度，以稳定的电信波长V4+电荷状态，从而延长其寿命至少两个数量级。这些结果支持了SiC中单个V发射极作为可扩展电信量子网络中的材料节点的前景。已经提出了几种固态缺陷平台作为量子通信网络中的自旋光子接口。在这里，作者报告的自旋选择性光学跃迁和狭窄的非均匀光谱分布的V中心同位素富集的SiC在电信O波段发射。
Spin-active quantum emitters have emerged as a leading platform for quantum technologies. However, one of their major limitations is the large spread in optical emission frequencies, which typically extends over tens of GHz. Here, we investigate single V4+ vanadium centres in 4H-SiC, which feature telecom-wavelength emission and a coherent S = 1/2 spin state. We perform spectroscopy on single emitters and report the observation of spin-dependent optical transitions, a key requirement for spin-photon interfaces. By engineering the isotopic composition of the SiC matrix, we reduce the inhomogeneous spectral distribution of different emitters down to 100 MHz, significantly smaller than any other single quantum emitter. Additionally, we tailor the dopant concentration to stabilise the telecom-wavelength V4+ charge state, thereby extending its lifetime by at least two orders of magnitude. These results bolster the prospects for single V emitters in SiC as material nodes in scalable telecom quantum networks. Several solid-state defect platforms have been proposed for application as a spin-photon interface in quantum communication networks. Here the authors report spin-selective optical transitions and narrow inhomogeneous spectral distribution of V centers in isotopically-enriched SiC emitting in the telecom O-band.
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影响因子：
12.5
作者：
Christle, David J.;Klimov, Paul V.;Awschalom, David D.
通讯作者：
Awschalom, David D.
影响因子：
4
作者：
Fait, J.;Putz, S.;Trupke, M.
通讯作者：
Trupke, M.
影响因子：
3.3
作者：
Gilardoni, Carmem M.;Ion, Irina;van der Wal, Caspar H.
通讯作者：
van der Wal, Caspar H.
影响因子：
3.8
作者：
Hagemeier, Jenna;Bonato, Cristian;Bouwmeester, Dirk
通讯作者：
Bouwmeester, Dirk
影响因子：
41.2
作者：
Babin, Charles;Stoehr, Rainer;Wrachtrup, Joerg
通讯作者：
Wrachtrup, Joerg