Investigation of Quantum Confinement in 1D-2D Interface Excitons Towards High-Quality Single Photon Emitters

• Project/Area Number: 25K00056
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 28020:Nanostructural physics-related
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: 方 楠 国立研究開発法人理化学研究所, 開拓研究所, 研究員 (50850509)
• Project Period (FY): 2025-04-01 – 2028-03-31
• Project Status: Granted (Fiscal Year 2025)
• Budget Amount: ¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000); Fiscal Year 2027: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2026: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2025: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
• Keywords: 1D-2D heterostructure / single photon emitter / interface exciton

Outline of Research at the Start

The interface excitons exhibit quantum confinement at room temperature, which holds promise as single-photon sources. To fully explore the potential, this proposal aims to characterize the orientation of 1D-2D interface excitons using defocused photoluminescence imaging technology, purify single-photon emission by mechanical modulation, and demonstrate practical single-photon emitters within a field-effect transistor structure. The study will open new opportunities for applications in quantum technologies, significantly advancing the emerging field of 1D-2D heterostructures.