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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7717
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dc.contributor.authorMugundhan, V-
dc.contributor.authorSwar, Maheswar-
dc.contributor.authorBhar, Subhajit-
dc.contributor.authorChaudhuri, Saptarishi-
dc.date.accessioned2021-03-04T05:28:45Z-
dc.date.available2021-03-04T05:28:45Z-
dc.date.issued2021-02-
dc.identifier.citationIEEE Transactions On Instrumentation And Measurement, 2021, Vol.70, Artical No. 2001508en_US
dc.identifier.issn0018-9456-
dc.identifier.issn1557-9662 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/7717-
dc.descriptionRestricted Accessen_US
dc.description.abstractWe present the development and characterization of a generic, reconfigurable, low-cost (<350$) software-defined digital receiver system (DRS) for temporal correlation measurements in atomic spin ensembles. We demonstrate the use of the DRS as a component of a high-resolution magnetometer. Digital receiver-based fast Fourier transform spectrometers (FFTSs) are generally superior in performance in terms of signal-tonoise ratio (SNR) compared with traditional swept-frequency spectrum analyzers (SFSAs). In applications where the signals being analyzed are a very narrow band in the frequency domain, recording them at high speeds over a reduced bandwidth provides flexibility to study them for longer periods.We have built the DRS on the STEMLab 125-14 FPGA platform, and it has two different modes of operation: FFT spectrometer and real-time raw voltage recording mode. We evaluate its performance by using it in atomic spin noise spectroscopy (SNS). We demonstrate that the SNR is improved by more than one order of magnitude with the FFTS compared with that of the commercial SFSA. We also highlight that with this DRS operating in the triggered data acquisition mode, one can achieve a spin noise (SN) signal with high SNR in a recording time window as low as 100 ms. We make use of this feature to perform time-resolved high-resolution magnetometry. While the receiver was initially developed for SNS experiments, it can be easily used for other atomic, molecular, and optical (AMO) physics experiments as wellen_US
dc.language.isoenen_US
dc.publisherIEEEen_US
dc.relation.urihttps://ieeexplore.ieee.org/document/9205918en_US
dc.rights2020 IEEE.en_US
dc.subjectTerms—Correlationen_US
dc.subjectdigital signal processingen_US
dc.subjectfield programmable gate arrays,en_US
dc.subjectlaser applicationsen_US
dc.subjectmagnetometers, spectroscopy.en_US
dc.titleA Real-Time Digital Receiver for Correlation Measurements in Atomic Systemsen_US
dc.typeArticleen_US
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