Correspondent: Yuan Ping

Exchange unit: University of California, Santa Cruz

Missing atoms or atom substitutions (point defects) in two-dimensional (2D) material lattices are potential hosts of emerging quantum technologies, such as single photon emitters and spin qubits. The design guided by the first principle of quantum defects in two-dimensional materials paves the way for the reasonable discovery of spin qubits. Recently, Yuan Ping of the University of California, Santa Cruz, published a summary paper entitled "Computation and Design of Quantum Defects in Two-dimensional Materials" in the internationally renowned journal NAT.compute.sci. Here, they discussed the frontier of the development of first-principles theory and the key physical characteristics of predicting point defects in two-dimensional materials, especially the challenges of photoelectric and spin photon characteristics to quantum information technology. The strong multi-body interaction with reduced dimensions requires advanced electronic structure methods beyond the mean field theory. The great challenge of developing theoretical methods suitable for strongly correlated defect states and general methods for predicting spin relaxation and decoherence time of spin defects remains to be solved.

Figure 1: Suggestions on the feedback loop between theory and experiment for discovering new spin defects in two-dimensional materials.

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/articles/s 43588-02 1-00 140-w