Stark Shift from Quantum Defects in Hexagonal Boron Nitride

• URL: http://arxiv.org/abs/2502.05490v1
• Date: Sat, 08 Feb 2025 08:12:48 GMT
• Title: Stark Shift from Quantum Defects in Hexagonal Boron Nitride
• Authors: Pei Li, Ran Xu, Bing Huang, Song Li,
• Abstract summary: Color centers in hexagonal boron nitride have emerged as promising candidates for quantum information applications. The interaction between external fields and defects, such as the Stark shift, offers valuable insights into their local geometric configurations. We find that the local symmetry of the defects plays a crucial role in determining the nature of the Stark shift, which can be either linear or quadratic.
• Score: 22.16184196271581
• License:
• Abstract: Color centers in hexagonal boron nitride have emerged as promising candidates for quantum information applications, owing to their efficient and bright single photon emission. Despite the challenges in directly characterizing these emitters, the interaction between external fields and defects, such as the Stark shift, offers valuable insights into their local geometric configurations. In this study, we focus on clarifying the possible origin of the distinct Stark shift characteristics observed experimentally, particularly in the emission range around 2 eV. We find that the local symmetry of the defects plays a crucial role in determining the nature of the Stark shift, which can be either linear or quadratic. Additionally, the local dielectric environment significantly influences the Stark shift response. Our calculations not only enhance the understanding of the micro-structure of these hitherto unknown emitters but also pave the way for their more effective utilization as single-photon sources and qubits in quantum technologies.

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