Development of a Practical Wide-field Quantum Diamond Microscope for Authenticity Identification in Jewellery Industry
Grant Data
Project Title
Development of a Practical Wide-field Quantum Diamond Microscope for Authenticity Identification in Jewellery Industry
Principal Investigator
Professor Chu, Zhiqin
(Project Coordinator (PC))
Co-Investigator(s)
Mr Hui Tony KC
(Co-Investigator)
Dr Wang Zhenyu
(Co-Investigator)
Professor Cui Xiaodong
(Co-Investigator)
Professor Shao Lei
(Co-Investigator)
Duration
17
Start Date
2020-07-02
Completion Date
2021-12-31
Amount
601967
Conference Title
Development of a Practical Wide-field Quantum Diamond Microscope for Authenticity Identification in Jewellery Industry
Keywords
Authenticity Identification, Development, Jewellery Industry, Practical Wide-field Quantum Diamond Microscope
Discipline
Others - Electrical and Electronic Engineering
Panel
Engineering (E)
HKU Project Code
PiH/149/20
Grant Type
Postdoctoral Hub Programme for ITF projects
Funding Year
2020
Status
Completed
Objectives
This project is to develop a practical diamond based super-resolution enabled wide-field quantum sensing apparatus, advanced measurement schemes and computational algorithms, to detect the atomic defects (""intrinsic fingerprint"") in diamond for identifying its origin and authenticity noninvasively by optical means. We will set up a wide-field quantum diamond microscope based on some basic optical elements, combined with a high frame rate camera for fast readout of spin defects in diamond. By using cost-effective digital micromirror device to generate required illumination patterns on sample, we will upgrade the quantum sensing apparatus to work in super-resolution imaging mode. By well-designed quantum control pulse, an advanced measurement protocol will be developed to detect spin properties of atomic defects which are significantly influenced by local crystal environments such as strain, isotopic abundance of carbon atoms and etc. To the best of our knowledge, this is for the first time in the world that applying quantum measurement technologies for determining the quality of diamond gemstones, providing new insights in the ""old"" jewellery industry. It is anticipated that this project will generate a cost-effective, efficient and precise method for a new era of diamond identification in the jewellery industry.