Atomically thin two-dimensional (2D) quantum materials and their heterostructures have become a key enabling technology for applications in photonic quantum technologies [1] [2]. Compared to other solid-state quantum emitters, 2D emitters advantages lie in their deterministic position control, their straight forward integration into complex photonic circuits and devices, and their tailorable electronic band structure [3]. In addition, 2D materials can be used as non-linear optical on-chip elements and to build new types of quantum sensors and detectors [4]. This new research field has just started to explore its endless possibilities. The recent demonstration of effortless integration of 2D materials onto photonics and CMOS platforms will result in a breakthrough in the development of on-chip quantum networks [5]. It will take full advantage of the huge variety of 2D materials and heterostructures and prototype novel quantum devices with revolutionary functionalities [2].



[1] Novoselov, K., Mishchenko, A., Carvalho, A. & Neto, A. C. 2D materials and van der Waals heterostructures. Science 353 (2016)
[2] Liu, X. & Hersam, M. C. 2D materials for quantum information science. Nature Reviews Materials 4, 669-684 (2019).
[3] Tran, T. T., Bray, K., Ford, M. J., Toth, M. & Aharonovich, I. Quantum emission from hexagonal boron nitride monolayers. Nature Nanotechnology 11, 37-41 (2016).
[4] Miao, J. & Wang, C. Avalanche photodetectors based on two-dimensional layered materials. Nano Research, 1-11 (2020).
[5] Peyskens, F., Chakraborty, C., Muneeb, M., Van Thourhout, D. & Englund, D. Integration of single photon emitters in 2D layered materials with a silicon nitride photonic chip. Nature Communications 10, 1-7 (2019)


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