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Optimization of Feedback-Loop Parameters in Thulium Optical Clocks at Synchronous Comparison 同步比较下铊光时钟反馈回路参数的优化
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S1063776123080150
D. O. Tregubov, D. I. Provorchenko, D. A. Mishin, N. N. Kolachevskii, A. A. Golovizin
{"title":"Optimization of Feedback-Loop Parameters in Thulium Optical Clocks at Synchronous Comparison","authors":"D. O. Tregubov,&nbsp;D. I. Provorchenko,&nbsp;D. A. Mishin,&nbsp;N. N. Kolachevskii,&nbsp;A. A. Golovizin","doi":"10.1134/S1063776123080150","DOIUrl":"10.1134/S1063776123080150","url":null,"abstract":"<p>Synchronous comparison of optical clocks using phase-coherent clock lasers makes it possible to determine the difference (ratio) of clock transition frequencies, which is not limited by the total noise of lasers in use. A detailed simulation of the comparison of two thulium optical clocks is performed using synchronous interrogation of atoms by the radiation of a common clock laser. Some critical parameters have been determined, specifically: the residual noncorrelated frequency and amplitude noises of test pulses and reading noises, which may deteriorate the comparison stability. At the same time, it is demonstrated that this way is insensitive to fluctuations in the number of atoms, calibration of feedback-loop parameters, individual ejections in measurement cycles, and fluctuations of laboratory magnetic field.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Observation of Kapitza–Dirac Diffraction in Atomic Lithium Gas Using Bragg’s Scattering 用Bragg散射观测原子锂气体中Kapitza–Dirac衍射
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S1063776123080010
V. V. Baturo, V. A. Vinogradov, M. V. Platonova, I. V. Yukhnovets, A. V. Turlapov
{"title":"Observation of Kapitza–Dirac Diffraction in Atomic Lithium Gas Using Bragg’s Scattering","authors":"V. V. Baturo,&nbsp;V. A. Vinogradov,&nbsp;M. V. Platonova,&nbsp;I. V. Yukhnovets,&nbsp;A. V. Turlapov","doi":"10.1134/S1063776123080010","DOIUrl":"10.1134/S1063776123080010","url":null,"abstract":"<p>A short-lived density grating is produced in a gas of lithium atoms. The gas is preliminarily cooled in a magnetooptical trap. The grating is formed due to diffraction of atoms on a standing light wave. The grating is observed from Bragg’s scattering of light from it. This method of formation and observation over the grating can be used in a lithium-based atomic interferometer.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Field Shift of Coherent Population Trapping Resonance Taking into Account Spatial Inhomogeneity of the Light Beam 考虑光束空间不均匀性的相干布居陷阱共振的场位移
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S106377612308006X
D. V. Kovalenko, V. I. Yudin, M. Yu. Basalaev, N. V. Strokova, A. V. Taichenachev, O. N. Prudnikov
{"title":"Field Shift of Coherent Population Trapping Resonance Taking into Account Spatial Inhomogeneity of the Light Beam","authors":"D. V. Kovalenko,&nbsp;V. I. Yudin,&nbsp;M. Yu. Basalaev,&nbsp;N. V. Strokova,&nbsp;A. V. Taichenachev,&nbsp;O. N. Prudnikov","doi":"10.1134/S106377612308006X","DOIUrl":"10.1134/S106377612308006X","url":null,"abstract":"<p>We study the field shift of coherent population trapping (CPT) resonance excited by a bichromatic field in an open Λ system with account for the Gaussian profile of the laser radiation intensity. Two methods for error signal formation are considered: the harmonic frequency modulation and the step phase modulation (phase jumps). It is shown that the spatial inhomogeneity of the light beam leads to an essentially nonlinear dependence of the error signal shift on the laser radiation intensity. We propose an approach for the linearization of this dependence, which is important for the development of methods for suppressing the field shift in atomic clocks based on CPT resonances.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two-Dimensional Magneto-optical Trap for Producing a Flux of Cold Thulium Atoms 用于产生冷铊原子通量的二维磁光阱
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S1063776123080162
M. O. Yaushev, D. A. Mishin, D. O. Tregubov, D. I. Provorchenko, N. N. Kolachevskii, A. A. Golovizin
{"title":"Two-Dimensional Magneto-optical Trap for Producing a Flux of Cold Thulium Atoms","authors":"M. O. Yaushev,&nbsp;D. A. Mishin,&nbsp;D. O. Tregubov,&nbsp;D. I. Provorchenko,&nbsp;N. N. Kolachevskii,&nbsp;A. A. Golovizin","doi":"10.1134/S1063776123080162","DOIUrl":"10.1134/S1063776123080162","url":null,"abstract":"<p>We propose a design of a source of cold thulium atoms based on a 2D magneto-optical trap and perform numerical simulation of its operation. Optimal parameters of cooling radiation and the magnetic field are determined; it is shown that for a total radiation power of 50 mW and an atomic oven temperature of 800 K, the proposed configuration can provide a flux of 4 × 10<sup>8</sup> cold atoms per second, and with an increase of the oven temperature, the flux can reach ~ 10<sup>11</sup> atom/s. Such a source can be used for building frequency standards as well as in experiments with quantum simulators and the Bose–Einstein condensate.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Coherent Population Trapping Resonance Parameters and Field Shifts during the Detection of Signals from Different Cross-Sectional Areas of the Interaction of Laser Radiation with Atoms 激光与原子相互作用不同截面信号探测过程中的相干布居陷阱共振参数和场位移
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S1063776123080137
S. M. Ignatovich, M. N. Skvortsov, I. S. Mesenzova, N. L. Kvashnin, V. I. Vishnyakov, D. V. Brazhnikov, D. E. Tarasenko
{"title":"Coherent Population Trapping Resonance Parameters and Field Shifts during the Detection of Signals from Different Cross-Sectional Areas of the Interaction of Laser Radiation with Atoms","authors":"S. M. Ignatovich,&nbsp;M. N. Skvortsov,&nbsp;I. S. Mesenzova,&nbsp;N. L. Kvashnin,&nbsp;V. I. Vishnyakov,&nbsp;D. V. Brazhnikov,&nbsp;D. E. Tarasenko","doi":"10.1134/S1063776123080137","DOIUrl":"10.1134/S1063776123080137","url":null,"abstract":"<p>The results of an experimental comparison of the parameters of the coherent population trapping (CPT) resonance for the <sup>87</sup>Rb <i>D</i><sub>1</sub> line and the light shifts during the detection of signals from different cross-sectional areas of the interaction of laser radiation with atoms are presented. A method is proposed to search for zero-light-shift operating conditions and their automatic stabilization, which would improve the long-term stability of CPT-resonance-based microwave frequency standards.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Active Pointing System for the Transmission of Ultrastable Optical Frequency Signals through an Open-Air Link 用于通过开放式链路传输超稳定光学频率信号的有源指向系统
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S1063776123080083
A. D. Legoshin, K. A. Liskova, K. S. Kudeyarov, G. A. Vishnyakova, E. S. Mironchuk, N. O. Zhadnov, D. S. Kryuchkov, K. Yu. Khabarova, N. N. Kolachevsky
{"title":"Active Pointing System for the Transmission of Ultrastable Optical Frequency Signals through an Open-Air Link","authors":"A. D. Legoshin,&nbsp;K. A. Liskova,&nbsp;K. S. Kudeyarov,&nbsp;G. A. Vishnyakova,&nbsp;E. S. Mironchuk,&nbsp;N. O. Zhadnov,&nbsp;D. S. Kryuchkov,&nbsp;K. Yu. Khabarova,&nbsp;N. N. Kolachevsky","doi":"10.1134/S1063776123080083","DOIUrl":"10.1134/S1063776123080083","url":null,"abstract":"<p>An active pointing system has been developed and created for an atmospheric transfer link for ultrastable optical frequency signals. This system can significantly decrease the deviations of laser beam direction and ensure stable transmission under conditions of a moving reflector installed at the midpoint of the line. The results of testing the system confirm its high efficiency and potential for use under real conditions.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Laser Cooling of Lithium-6 Atoms in a Bichromatic Light Field 激光冷却双色光场中的锂-6原子
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S1063776123080058
R. Ya. Ilenkov, O. N. Prudnikov, A. A. Kirpichnikova, A. V. Taichenachev, V. I. Yudin
{"title":"Laser Cooling of Lithium-6 Atoms in a Bichromatic Light Field","authors":"R. Ya. Ilenkov,&nbsp;O. N. Prudnikov,&nbsp;A. A. Kirpichnikova,&nbsp;A. V. Taichenachev,&nbsp;V. I. Yudin","doi":"10.1134/S1063776123080058","DOIUrl":"10.1134/S1063776123080058","url":null,"abstract":"<p>The kinetics of <sup>6</sup>Li atoms in a bichromatic laser field exciting transitions on D2 and D1 lines is investigated. The model takes into account the complex real structure of energy levels of <sup>6</sup>Li (including the Zeeman degeneracy) as well as the nonuniform spatial polarization of the laser field. It is found that detuning and the polarization configuration of the light field component of the resonant D2 line of the <sup>6</sup>Li atom are of fundamental importance for laser cooling. The possibility of cooling of atoms below the Doppler limit is demonstrated.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Double Radio-Optical Resonance in the Hanle Configuration under the Excitation of the D1 Absorption Line in Alkali Metal Atoms 碱金属原子中D1吸收线激发下Hanle构型的双射电光学共振
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S1063776123080022
D. V. Brazhnikov, V. M. Entin, I. I. Ryabtsev
{"title":"Double Radio-Optical Resonance in the Hanle Configuration under the Excitation of the D1 Absorption Line in Alkali Metal Atoms","authors":"D. V. Brazhnikov,&nbsp;V. M. Entin,&nbsp;I. I. Ryabtsev","doi":"10.1134/S1063776123080022","DOIUrl":"10.1134/S1063776123080022","url":null,"abstract":"<p>The absorption of a light wave interacting with optical transitions in the D<sub>1</sub> line of an alkali metal atom subjected to microwave radiation that is in resonance with magnetic dipole transitions between hyperfine ground-state components, has been investigated. It is known that when scanning a longitudinal magnetic field (<b>B</b> || <b>k</b>, where <b>k</b> is the wavevector), one may observe a magneto-optical resonance due to the ground-state Hanle effect. In addition, the effect of double radio-optical resonance takes place because of the presence of the resonance microwave field. The joint influence of these effects on the formation of a narrow magneto-optical resonance in light wave absorption has been studied theoretically and experimentally. It has been shown analytically that the effects compete with each other and destructively act on the resonance formation. As a result, the amplitude of the resonance is small and its shape is complicated. However, in the presence of a buffer gas the pressure of which is such that the hyperfine splitting of the ground state remains spectrally unresolved, it becomes possible to observe a magneto-optical resonance with a relatively large amplitude. Experiments have been carried out with the use of a miniature glass cell (<i>V</i> ~ 0.1 cm<sup>3</sup>) filled with <sup>87</sup>Rb vapor and a buffer gas argon (a pressure of about 95 Torr). In particular, the theoretically predicted resonance narrowing with increasing light field intensity has been experimentally observed. A configuration for magneto-optical resonance excitation suggested here may be applied in quantum magnetometry to measure weak permanent magnetic fields and resonance microwave fields using cells filled with alkali metal vapor.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of Entangling Logic Gates Based on the Rydberg Blockade Effect 基于Rydberg阻塞效应的纠缠逻辑门优化
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S1063776123080113
L. V. Gerasimov, D. V. Kupriyanov, S. S. Straupe
{"title":"Optimization of Entangling Logic Gates Based on the Rydberg Blockade Effect","authors":"L. V. Gerasimov,&nbsp;D. V. Kupriyanov,&nbsp;S. S. Straupe","doi":"10.1134/S1063776123080113","DOIUrl":"10.1134/S1063776123080113","url":null,"abstract":"<p>The implementation of a quantum logic gate in a system of cold atoms in optical microtraps is analyzed. The dynamics of two spin qubits is simulated, and a number of processes that limit the efficiency of entanglement based on the Rydberg blockade effect are considered. A geometry of two-photon excitation of Rydberg states of atoms is proposed that makes it possible to increase the robustness of the system to variations in a number of parameters and to reduce losses associated with the incoherent scattering of the driving field.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Three-Photon Laser Excitation of Single Rydberg Rubidium Atoms in an Optical Dipole Trap 光学偶极阱中单个里德伯铷原子的三光子激光激发
IF 1.1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2023-09-29 DOI: 10.1134/S1063776123080101
I. I. Beterov, E. A. Yakshina, D. B. Tret’yakov, N. V. Al’yanova, D. A. Skvortsova, G. Suliman, T. R. Zagirov, V. M. Entin, I. I. Ryabtsev
{"title":"Three-Photon Laser Excitation of Single Rydberg Rubidium Atoms in an Optical Dipole Trap","authors":"I. I. Beterov,&nbsp;E. A. Yakshina,&nbsp;D. B. Tret’yakov,&nbsp;N. V. Al’yanova,&nbsp;D. A. Skvortsova,&nbsp;G. Suliman,&nbsp;T. R. Zagirov,&nbsp;V. M. Entin,&nbsp;I. I. Ryabtsev","doi":"10.1134/S1063776123080101","DOIUrl":"10.1134/S1063776123080101","url":null,"abstract":"<p>Three-photon laser excitation of single rubidium atoms in an optical dipole trap (ODT) into the <sup>37</sup>P Rydberg state by laser radiation with wavelengths of 780, 1367, and 743 nm has been experimentally demonstrated. The excitation to Rydberg states is detected by an optical method using the losses of atoms in the ODT. The laser excitation spectra of single Rydberg atoms in the ODT are recorded, and the dependence of the excitation probability on the laser pulse duration is measured. The measured spectrum width was 2 MHz. Experiments on fluorescence quenching spectroscopy of a cloud of cold atoms in a magneto-optical trap during the three-photon laser excitation of atoms to Rydberg states are also carried out. The experimental results are compared with a numerical calculation. Methods for increasing the accuracy of the coherent three-photon laser excitation of Rydberg atoms in the ODT are considered.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41084063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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