Quantum Sensing with Defects in Diamond and Semiconductors

ORAL  · Invited

Abstract

Quantum sensing is a paradigm shift, relying on the intrinsic sensitivities of quantum state to their surrounding environment to detect extremely small changes in temperature, magnetic, and electric fields. The success of quantum sensing using nitrogen-vacancy (NV) defects in diamond under ambient conditions has sparked a growing interest in discovering other solid-state defects in wide bandgap semiconductors with comparable properties. Defects as qubit platforms, are highly susceptible to various sources of noise from experimental setup hardware and external factors, such as fluctuations in excitation lasers, unwanted sample heating caused by laser excitation and microwave drives, and impurities in the sample. To mitigate the effects of these experimental artifacts, we employed hardware improvements and better data processing techniques in our measurements. We utilized machine learning (ML) algorithms which not only increased the fidelity of our data but also dramatically increased the sensitivity in our measurements. We have developed methods for the fabrication of high efficiency microstrip and coplanar RF antennas, which removed the need for the use of an RF amplifier in optically detected magnetic resonance (ODMR) based quantum sensing of magnetic fields. In this talk, our recent results on the characterization of defects in 3C and 4H SiC, cubic boron nitride, 2D transition metal dichalcogenides (TMDs) for quantum sensing applications will be presented. Exciton dynamics in 2D TMDs will be discussed. Our recent achievements in miniaturization of NV diamond based quantum sensor devices will be also covered.

*This material is based on work supported by the National Science Foundation under grants #1831954 and #2101102, the Air Force Office of Scientific Research under grant # FA9550-19-1-0122. This work is also supported by NIH RCMI: U54MD013376 and ASCEND: UL1GM118973/ RL5GM118972 grants.

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Publication: 1- Peker Milas, Sheikh Mathab, John Abraham, Jahangir Alam, MVS Chandrashekar, Patrick M. Vora, Birol Ozturk, Michael. G. Spencer, "Electronic and optical characterization of bulk single crystals of Cubic Boron Nitride (cBN)," AIP Advances, 12 (9), 095303 (2022)
2- Sheikh Mahtab, Peker Milas, Md. Jahangir Alam, MVS Chandrashekhar, Michael G. Spencer, Birol Ozturk, "Room Temperature RC Series Zero Phonon Line Emission from Electron Irradiated Cubic Boron Nitride", Optica Quantum 2.0 Conference Proceedings, Boston (2022)
3- S. Mahtab, P. Milas, D.-T. Veal, M. G. Spencer, and B. Ozturk, "High Efficiency Radio Frequency (RF) Antennas for Amplifier Free Quantum Sensing Applications" Review of Scientific Instruments 94 (4), (2023) 044701
4- Peker Milas, Sheikh Mahtab, Tomas Sujeta, Michael G. Spencer, and Birol Ozturk "Hardware and Machine Learning Optimization of Diamond Quantum Sensors", Optica Quantum 2.0 Conference Proceedings, Rotterdam (2024)
5- Azmath Fathima, Peker Milas, Sheikh Mahtab, Tanmay Talukder, Mya Merritt, James Wachira, Solomon Tadesse, Michael Spencer, and Birol Ozturk, "Toward Nanodiamond Based Quantum Sensing of Action Potentials from Individual Cells," Under review (2024)
6- S. Mahtab, P. Milas, V. Efe, M. G. Spencer, and B. Ozturk, "Principles of High Efficiency Radio Frequency (RF) Antenna Design and Fabrication for Quantum Sensing Applications" To be submitted, 2024
7- S. Mahtab, P. Milas, M. G. Spencer, and B. Ozturk, "Defects in 4H-SiC for Quantum Sensing", To be submitted, 2024
8- P. Milas, P. Shrestha, Michael Spencer, and B. Ozturk, "Exciton dynamics in WSe2", To be submitted, 2024

Presenters

  • Birol Ozturk

    • Morgan State University

Authors

  • Birol Ozturk

    • Morgan State University

  • Peker Milas

    • Morgan State University

  • Sheikh Mahtab

    • Morgan State University

  • Michael Spencer

    • Morgan State University

  • Tomas Sujeta

    • Morgan State University