[1] [1] Brodnik G M, Harrington M W, Dallyn J H, et al. Optically synchronized fibre links using spectrally pure chip-scale lasers[J]. Nature Photonics,2021,15(8):588-593.

[2] [2] Lucamarini M, Yuan Z L, Dynes J F, et al. Overcoming the rate-distance limit of quantum key distribution without quantum repeaters[J]. Nature,2018,557(7705):400-403.

[3] [3] Jing M, Hu Y, Ma J, et al. Atomic superheterodyne receiver based on microwave-dressed Rydberg spectroscopy[J]. Nature Physics,2020,16(9):911-915.

[4] [4] Chopinaud A, Pritchard J D. Optimal state choice for Rydbergatom microwave sensors[J]. Physical Review Applied,2021,16(2):024008.

[5] [5] Niffenegger R J, Stuart J, Sorace-Agaskar C, et al. Integrated multi-wavelength control of an ion qubit[J]. Nature, 2020,586(7830):538-542.

[6] [6] Jiang Y Y, Ludlow A D, Lemke N D, et al. Making optical atomic clocks more stable with 10-16-level laser stabilization[J].Nature Photonics, 2011,5(3):158-161.

[7] [7] Zhang W, Baynes F, Diddams S A, et al. Microrod optical frequency reference in the ambient environment[J]. Physical Review Applied,2019,12(2):024010.

[8] [8] Lim J, Savchenkov A A, Dale E, et al. Chasing the thermodynamical noise limit in whispering-gallery-mode resonators for ultrastable laser frequency stabilization [J]. Nature Communications,2017,8(1):8.

[9] [9] Zhang W, Stern L, Carlson D, et al. Ultranarrow linewidth photonic-atomic laser[J]. Laser & Photonics Reviews, 2020,14(4):1900293.

[10] [10] Xu Z, Zhang X, Huang K, et al. A digital optical phase-locked loop for diode lasers based on field programmable gate array[J]. Review of Scientific Instruments,2012,83(9):1501.

[11] [11] Luo Y, Li H, Yeh H C. Note: digital laser frequency auto-locking for inter-satellite laser ranging[J]. Review of Scientific Instruments, 2016,87(5):158-161.

[12] [12] Leibrandt D R, Heidecker J. An open source digital servo for atomic, molecular, and optical physics experiments[J]. Review of Scientific Instruments,2015,86(12):136-140.

[13] [13] Yu SJ, Fajeau E, Liu L Q, et al. The performance and limitations of FPGA-based digital servos for atomic, molecular, and optical physics experiments [J]. Review of Scientific Instruments,2018,89(2):142-146.

[14] [14] Tourigny-Plante A, Michaud-Belleau V, Bourbeau Hebert N,et al. An open and flexible digital phase-locked loop for optical metrology[J]. Review of Scientific Instruments,2018,89(9):98-101.

[15] [15] Preuschoff T, Schlosser M, Birkl G. Digital laser frequency and intensity stabilization based on the STEMlab platform (originally Red Pitaya) [J]. Review of Scientific Instruments,2020,91(8):299-303.

[16] [16] Wiegand B, Leykauf B, Jordens R, et al. Linien: A versatile,user-friendly, open-source FPGA-based tool for frequency stabilization and spectroscopy parameter optimization[J]. Review of Scientific Instruments,2022,93(6):198-201.

[17] [17] Avalos V, Nie X, Yang A, et al. Field-programmable-gate-array-based digital frequency stabilization of low-phase-noise diode lasers[J]. Review of Scientific Instruments,2023,94(6);1204.

[18] [18] Zhou X L, Huang D Y, Shen Z M, et al. Active stabilization of multi-parameter in AMO experiments with a single digital servo[J]. Optics & Laser Technology,2023,167:109791.

[19] [19] Schussheim D T, Gibble K. A many-channel FPGA control system[J]. Review of Scientific Instruments,2023,94(8):135-141.

[22] [22] Cardenas-Olaya A C, Rubiola E, Friedt J M, et al. Noise characterization of analog to digital converters for amplitude and phase noise measurements[J]. Review of Scientific Instruments,2017,88(6):28-35.

[23] [23] Qu Z, Liu X, Zhang C, et al. Fabrication of an ultra-high quality MgF2 micro-resonator for a single soliton comb generation[J]. Optics Express,2023,31(2):3005-3016.

[24] [24] Liu K, Chauhan N, Wang J, et al. 36Hz integral linewidth laser based on a photonic integrated 4. 0m coil resonator[J]. Optica,2022,9(7):770-775.