Solid-State Quantum Qubits and Sensors in Diamond, Silicon Carbide, and Superconducting Circuits
This research community develops physical platforms for quantum information processing and sensing, utilizing point defects in wide-bandgap semiconductors and superconducting circuits to create qubits and high-precision detectors.
The work centers on engineering spin states in silicon carbide, hexagonal boron nitride, and diamond, with a strong focus on nitrogen-vacancy centers and silicon vacancies. Recurring methods include femtosecond laser writing, ion implantation, and the fabrication of thin films to control defect properties. Applications span quantum computing, where superconducting qubits and silicon spin qubits are optimized for fidelity and coherence, and quantum sensing, which utilizes single-photon emitters and magnetic field detection for biomedical and materials analysis. The community also investigates quantum dots and color centers as sources of non-classical light and nodes for quantum networks.
The largest share of the community's output is found in silicon research, accounting for 1.8% of all silicon research, and 6,277 papers here. Carbon research follows with 0.7% of its total research and 6,024 papers. The community comprises 17,756 papers, published primarily in Applied Physics Letters, arXiv, and the Journal of Applied Physics.
Recent work includes industry-compatible silicon spin-qubit unit cells, millisecond coherence times in 2D transmon qubits, and the use of engineered proteins for multimodal quantum sensing.