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Optical Charge State Manipulation of Lead-Vacancy Centers in Diamond
Yiyang Chen1, Yoshiyuki Miyamoto2, Eiki Ota1
1Department of Electrical and Electronic Engineering, School of Engineering, Institute of Science Tokyo, Meguro, 152-8552 Tokyo Japan.
Researchers achieved tunable charge state control for lead-vacancy (PbV) centers in diamond using multicolor lasers. This breakthrough enables spin control for PbV centers, crucial for quantum applications and advancing quantum computing.
Area of Science:
- Quantum computing and solid-state physics.
- Materials science and defect engineering in diamond.
Background:
- Group-IV vacancy centers in diamond are promising spin qubit candidates due to excellent optical and spin properties.
- Control over the charge state of these centers is essential for quantum applications as only specific states are magneto-optically active.
Purpose of the Study:
- To achieve controllable charge state manipulation of lead-vacancy (PbV) centers in diamond.
- To enable spin control of the negatively charged PbV center for quantum applications.
Main Methods:
- Utilized multicolor laser irradiation to control the charge state of PbV centers.
- Analyzed charge state dynamics to understand population manipulation.
Main Results:
- Achieved tunable population manipulation of the negatively charged PbV state, ranging from 0% to 89%.
- Demonstrated a charge cycle between neutral and negatively charged states.
- Proposed a potential pathway to the neutral PbV center with a spin-1 system.
Conclusions:
- Multicolor laser irradiation provides effective charge state control for PbV centers.
- This control is a critical step towards realizing spin control of PbV centers for scalable quantum technologies.
- The proposed charge cycle offers insights into the fundamental properties of PbV centers.
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