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Conference on Lasers and Electro-Optics

Diamond Color Center Based FM Microwave Demodulator

Linbo Shao, Mian Zhang, Marko Lončar, John A. Paulson

Published Jan 1, 2016• 0 citations
Publisher

Abstract

Nitrogen-vacancy centers, atomic-scale luminescent defects in diamond, are used to transduce frequency-modulated microwave signals to intensity-modulated fluorescence. Our work could lead to realization of radio receivers operating in extreme environments, including high temperature and pressure.
DOI
10.1364/cleo_at.2016.jth2a.136

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A setup is described that combines microwave spectroscopy with optical excitation and detection of luminescence of NV - colour centers in diamond crystals. The parameters of the system (design of the microwave antenna, microwave power and timing, and fast optical detection) allow studies of relaxation properties of the NV - defects and manipulation of their spin properties. Full Text: PDF References Bradac, C., Gaebel, T. and Rabeau, J. R., Nitrogen-Vacancy Color Centers in Diamond: Properties, Synthesis, and Applications, in Optical Engineering of Diamond (eds R. P. Mildren and J. R. Rabeau), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany (2013). CrossRef C.-C. Fu, H.-Y. Lee, K. Chen, T.-S. Lim, H.-Y. Wu, P.-K. Lin, P.-K. Wei, P.-H. Tsao, H.-C. Chang, and W. Fann, "Characterization and application of single fluorescent nanodiamonds as cellular biomarkers", Proc. Natl. Acad. Sci. U.S.A. 104, 727 (2007). CrossRef P. Neumann, R. Kolesov, B. Naydenov, J. Beck, F. Rempp, M. Steiner, V. Jacques, G. Balasubramanian, M. L. Markham, D. J. Twitchen, S. Pezzagna, J. Meijer, J. Twamley, F. Jelezko, and J. Wrachtrup, "Quantum register based on coupled electron spins in a room-temperature solid", Nature Phys. 6, 249 (2010). CrossRef J. M. Taylor, P. Cappellaro, L. Childress, L. Jiang, D. Budker, P. R. Hemmer, A. Yacoby, R. Walsworth, and M. D. Lukin, "High-sensitivity diamond magnetometer with nanoscale resolution", Nature Phys. 4, 810 (2008). CrossRef N. R. S. Reddy, N. B. Manson, and E. R. Krausz, "Two-laser spectral hole burning in a colour centre in diamond", Journal of Luminescence 38, 46 (1987) CrossRef F. Jelezko, T. Gaebel, I. Popa, A. Gruber, and J. Wrachtrup, "Observation of Coherent Oscillations in a Single Electron Spin", Phys. Rev. Lett. 92, 076401 (2004) CrossRef
Individual, luminescent point defects in solids, so-called color centers, are atomic-sized quantum systems enabling sensing and imaging with nanoscale spatial resolution. In this overview, we introduce nanoscale sensing based on individual nitrogen vacancy (NV) centers in diamond. We discuss two central challenges of the field: first, the creation of highly-coherent, shallow NV centers less than 10 nm below the surface of a single-crystal diamond; second, the fabrication of tip-like photonic nanostructures that enable efficient fluorescence collection and can be used for scanning probe imaging based on color centers with nanoscale resolution.
In this paper, we propose a method for simultaneously recovering multiple radio wave signals based on nitrogen-vacancy (NV) centers in diamond combining optically detected magnetic resonance (ODMR) spectrum. A controlled magnetic field gradient applied to the laser excitation area on the surface of diamond widens the detectable ODMR bandwidth to 200 MHz. Three different frequency-modulated (FM) signals with distinct carrier frequencies falling within the resonance frequency range are received and demodulated in real-time. Subsequently, the FM signal reception capability of this system is further investigated by measuring baseband signal frequencies ranging from 0.1 Hz to 200 Hz and adjusting the carrier power within a dynamic range from -10 dBm to 30 dBm. This proposal, which accomplishes multi-channel demodulation using a compact and single device, has potential applications in fields such as wireless communication, radar and navigation.
We propose a method for microwave target source localization based on the diamond nitrogen vacancy color center. We use coherent population oscillation effect and modulation and demodulation techniques to achieve the detection of microwave intensity of microwave target sources, with a minimum detection intensity of 0.59 µW. Positioning of the microwave source was achieved within 50×100cm 2 distance from the system 1 m away using the cubic spline interpolation algorithm and minimum mean squared error. The maximum positioning error was 3.5 cm. This method provides a new, to the best of our knowledge, idea for the passive localization of microwave targets.