A microwave control system for continuous spatial-domain atom interferometers
Source abstract
Abstract
We present a low-phase-noise microwave control system designed for spatial-domain atom interferometers, featuring the independent outputs of three microwave channels with minimal relative phase noise between them. Utilizing a nonlinear transmission line and single-sideband mixing with a digital signal source, we achieved three channels of 6835 MHz microwave frequency outputs, exhibiting absolute phase noises of −55, −100, and −124 dBc/Hz at 1 Hz, 1 kHz, and 1 MHz frequency offsets, respectively. We measured the relative phase noise between channels for a root mean square value of ∼251 μrad. A servo loop was integrated to stabilize the power ratio between Raman laser frequency components, ensuring long-term elimination of light shifts in the atom interferometer. The waveform parameters of the three microwave outputs can be adjusted independently, allowing for flexible manipulation of the atomic interference phase. These capabilities make the proposed microwave control system highly suitable for precise frequency and phase modulation in atom interferometer-based gyroscopes and accelerometers operating within continuous spatial-domain configurations.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Cold Atom Physics and Bose-Einstein Condensates · Advanced Frequency and Time Standards · Atomic and Subatomic Physics Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Precision Instrument, Tsinghua University 1 , Beijing 100084,
State Key Laboratory of Precision Measurement Technology and Instruments 2 , Beijing,
Funding
National Natural Science Foundation of China
References (41)
Show source-provided references
1. Long-term stability of an area-reversible atom-interferometer Sagnac gyroscope10.1103/physrevlett.97.240801 ↗
2. Characterization and limits of a cold-atom Sagnac interferometer10.1103/physreva.80.063604 ↗
3. Interleaved atom interferometry for high-sensitivity inertial measurements10.1126/sciadv.aau7948 ↗
4. Self-alignment of a large-area dual-atom-interferometer gyroscope using parameter-decoupled phase-seeking calibrations10.1103/physreva.103.023319 ↗
5. Six-axis inertial sensor using cold-atom interferometry10.1103/physrevlett.97.010402 ↗
6. Large-area Sagnac atom interferometer with robust phase read out10.1016/j.crhy.2014.10.001 ↗
7. Dual-axis high-data-rate atom interferometer via cold ensemble exchange10.1103/physrevapplied.2.054012 ↗
8. Closed-loop dual-atom-interferometer inertial sensor with continuous cold atomic beams10.1103/physrevapplied.21.034050 ↗
9. P.-Q. Yan , W.-C.Jia, S.-Z.Wang, and Y.-Y.Feng, “A continuous dual-axis atomic interferometric inertial sensor,” arXiv:2311.16557 (2023).
10. Hybridizing matter-wave and classical accelerometers10.1063/1.4897358 ↗
11. Tracking the vector acceleration with a hybrid quantum accelerometer triad10.1126/sciadv.add3854 ↗
12. Atomic interferometry using stimulated Raman transitions10.1103/physrevlett.67.181 ↗
13. Testing gravity with cold-atom interferometers10.1103/physreva.91.033629 ↗
14. Gravity surveys using a mobile atom interferometer10.1126/sciadv.aax0800 ↗
15. Measurement of the Earth’s gravity gradient with an atom interferometer-based gravity gradiometer10.1103/physrevlett.81.971 ↗
16. Compact high-resolution absolute-gravity gradiometer based on atom interferometers10.1103/physrevapplied.18.054091 ↗
17. Atomic velocity selection using stimulated Raman transitions10.1103/physrevlett.66.2297 ↗
18. Microwave signal generation with optical injection locking10.1364/ol.21.001502 ↗
19. Application of electro-optically generated light fields for Raman spectroscopy of trapped cesium atoms10.1007/s00340-004-1467-9 ↗
20. Analog+digital phase and frequency detector for phase locking of diode lasers10.1063/1.1914785 ↗
21. Measurement of the sensitivity function in a time-domain atomic interferometer10.1109/TIM.2007.915148 ↗
22. Microwave synthesis for the PTB cesium fountain clocks10.1109/tim.2019.2936694 ↗
23. Design and metrological features of microwave synthesizers for atomic fountain frequency standard10.1109/tuffc.2007.306 ↗
24. Low phase noise frequency synthesis for ultrastable X-band oscillators10.1109/lmwc.2017.2678400 ↗
25. A low phase noise microwave frequency synthesis for a high-performance cesium vapor cell atomic clock10.1063/1.4896043 ↗
26. A compact micro-wave synthesizer for transportable cold-atom interferometers10.1063/1.4884338 ↗
27. Frequency synthesis chain for the atomic fountain primary frequency standard10.1109/58.489391 ↗
28. Simple-design ultra-low phase noise microwave frequency synthesizers for high-performing Cs and Rb vapor-cell atomic clocks10.1063/1.4929384 ↗
29. Low phase noise microwave frequency synthesizer for cold atom clock10.1063/1.5093165 ↗
30. A low phase noise microwave source for high-performance CPT Rb atomic clock10.1049/ell2.12222 ↗
31. Simple-design low-noise NLTL-based frequency synthesizers for a CPT Cs clock10.1109/TIM.2009.2019306 ↗
32. Low-phase-noise frequency synthesizer for the trapped atom clock on a chip10.1109/tuffc.2010.1383 ↗
33. A low phase noise microwave source for atomic spin squeezing experiments in 87Rb10.1063/1.3700247 ↗
34. Development of low phase noise microwave frequency synthesizers for reducing dick effect of Cs fountain clocks10.1063/1.5042492 ↗
35. A versatile microwave source for cold atom experiments controlled by a field programmable gate array10.1063/1.5127880 ↗
36. Compact multi-channel radio frequency pulse-sequence generator with fast-switching capability for cold-atom interferometers10.1063/5.0148271 ↗
37. A continuous cold atomic beam interferometer10.1063/1.4913711 ↗
38. Continuous sub-Doppler-cooled atomic beam interferometer for inertial sensing10.1103/physrevapplied.17.024061 ↗
39. A new method for high-bandwidth servo control of the power ratio between two Raman beams for cold atom interferometer10.1063/5.0020144 ↗
40. Precision rotation sensing using atom interferometry
41. T. Sato , N.Nishimura, N.Kaku, S.Otabe, T.Kawasaki, T.Hosoya, and M.Kozuma, “Closed-loop measurement in atom interferometer gyroscope with velocity-dependent phase dispersion compensation,” arXiv:2407.05696 (2024).