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Operating a multi-ion clock with dynamical decoupling 利用动态去耦操作多离子时钟
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-09 DOI: arxiv-2408.05280
Nitzan Akerman, Roee Ozeri
{"title":"Operating a multi-ion clock with dynamical decoupling","authors":"Nitzan Akerman, Roee Ozeri","doi":"arxiv-2408.05280","DOIUrl":"https://doi.org/arxiv-2408.05280","url":null,"abstract":"We study and characterize a quasi-continuous dynamical decoupling (QCDD)\u0000scheme that effectively suppresses dominant frequency shifts in a multi-ion\u0000optical clock. Addressing the challenge of inhomogeneous frequency shifts in\u0000such systems, our scheme mitigates primary contributors, namely the electric\u0000quadrupole shift (QPS) and the linear Zeeman shift (LZS). Based on\u0000$^{88}$Sr$^+$ ions, we implement a QCDD scheme in linear chains of up to 7 ions\u0000and demonstrate a significant suppression of the shift by more than three\u0000orders of magnitude, leading to relative frequency inhomogeneity below\u0000$7cdot10^{-17}$. Additionally, we evaluate the associated systematic shift\u0000arising from the radiofrequency (RF) drive used in the QCDD scheme, showing\u0000that, in the presented realization, its contribution to the systematic relative\u0000frequency uncertainty is below $10^{-17}$, with potential for further\u0000improvement. These results provide a promising avenue toward implementing\u0000multi-ion clocks exhibiting an order of magnitude or more improvement in\u0000stability while maintaining a similar high degree of accuracy to that of\u0000single-ion clocks.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Probing (Ultra-) Light Dark Matter Using Synchrotron Based Mössbauer Spectroscopy 利用同步加速器莫斯鲍尔光谱学探测（超）轻暗物质
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-08 DOI: arxiv-2408.04700
Abhishek Banerjee
{"title":"Probing (Ultra-) Light Dark Matter Using Synchrotron Based Mössbauer Spectroscopy","authors":"Abhishek Banerjee","doi":"arxiv-2408.04700","DOIUrl":"https://doi.org/arxiv-2408.04700","url":null,"abstract":"We propose to search for (ultra)-light scalar dark matter (DM) using\u0000synchrotron radiation based M\"ossbauer spectroscopy technique. Such DM induces\u0000temporal variation in various fundamental constants, which in turn causes time\u0000modulation of the nuclear transition energies. When a M\"ossbauer source and\u0000absorber is separated by a large baseline, the DM induced shift between their\u0000energy levels can be tested by the modulation of the photon absorption\u0000spectrum. The narrow M\"ossbauer transitions allow the setup to efficiently\u0000probe DM in the high frequency range. We show that the reach of a M\"ossbauer\u0000experiment with the existing synchrotron beams is at par with the bounds from\u0000various equivalence principle violation searches. An improvement of the\u0000synchrotron setup would enable us to probe the hitherto uncharted territory of\u0000the DM parameter space upto MHz frequency. The proposed method would extend the\u0000DM search beyond the EP limit by several orders of magnitude, and would provide\u0000the best bound on DM interaction strength with various standard model fields in\u0000the high ($>$kHz) frequency region.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fock-space perturbed relativistic coupled-cluster calculations of electric dipole polarizability and nuclear spin-dependent parity non-conservation in Cs 铯中电偶极子极化率和核自旋相关奇偶性不守恒的福克空间扰动相对论耦合簇计算
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-08 DOI: arxiv-2408.04356
Suraj Pandey, Ravi Kumar, D. Angom, B. K. Mani
{"title":"Fock-space perturbed relativistic coupled-cluster calculations of electric dipole polarizability and nuclear spin-dependent parity non-conservation in Cs","authors":"Suraj Pandey, Ravi Kumar, D. Angom, B. K. Mani","doi":"arxiv-2408.04356","DOIUrl":"https://doi.org/arxiv-2408.04356","url":null,"abstract":"We implement the Fock-space perturbed relativistic coupled-cluster theory to\u0000compute the electric dipole polarizability of ground and low lying excited\u0000states, and nuclear spin-dependent parity violating transition amplitudes in\u0000Cs. Moreover, to check the accuracy of the wavefunctions used in the\u0000calculations, we compute the excitation energies, E1 transition amplitudes and\u0000magnetic dipole hyperfine constants for ground and low lying excited states. To\u0000improve the accuracy of the computed properties, we have incorporated the\u0000corrections from the relativistic and QED effects in our calculations. The\u0000contributions from triple excitations are accounted perturbatively. Our results\u0000on excitation energies, E1 transition amplitudes and hyperfine constants are in\u0000good agreement with the experimental results. Our polarizability results using\u0000FS-PRCC theory are in good agreement with the experimental data. Our values of\u0000parity-violating transition amplitudes are, in general, on the lower side of\u0000the previous values. From the analysis of the electron correlations, we find\u0000that the corrections from the Breit interaction and QED effects are important\u0000to get accurate results of nuclear spin-dependent parity-violating transition\u0000amplitudes in Cs. The largest cumulative contribution from Breit and QED\u0000corrections is found to be $approx$ 3.2% of the total value. The upper bound\u0000on the theoretical uncertainty in our calculated parity violating transition\u0000amplitudes is estimated to be about 1%.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measurement of the $s$-wave scattering length between metastable helium isotopes 测量氦同位素之间的s$波散射长度
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-08 DOI: arxiv-2408.04279
S. Kannan, Y. S. Athreya, A. H. Abbas, X. T. Yan, S. S. Hodgman, A. G. Truscott
{"title":"Measurement of the $s$-wave scattering length between metastable helium isotopes","authors":"S. Kannan, Y. S. Athreya, A. H. Abbas, X. T. Yan, S. S. Hodgman, A. G. Truscott","doi":"arxiv-2408.04279","DOIUrl":"https://doi.org/arxiv-2408.04279","url":null,"abstract":"We report the first experimental determination of the interspecies $s$-wave\u0000scattering length,($a_{34}$) between the $2,^3S_1,(F=3/2,m_F=3/2)$ state of\u0000$^3$He$^*$ and the $2,^3S_1,(m_J=1)$ state of $^4$He$^*$. We determine\u0000$a_{34}$ by inducing oscillations in a trapped Bose-Einstein condensate of\u0000$^4$He$^*$ and measuring the damping rate of these oscillations due to the\u0000presence of $^3$He$^*$ atoms. The deduced value of $a_{34}=29pm3$,nm is in\u0000good agreement with theoretical predictions. The knowledge of this scattering\u0000length is important for many fundamental experiments between these helium\u0000isotopes.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strong-field ionization with few-cycle, mid-infrared laser pulses induces a localized ionization followed by long-lasting charge migration in halogenated organic molecules 几周期中红外激光脉冲的强场电离诱导局部电离，随后卤代有机分子发生持久电荷迁移
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-08 DOI: arxiv-2408.04766
Kyle A. Hamer, Francois Mauger, Kenneth Lopata, Kenneth J. Schafer, Mette B. Gaarde
{"title":"Strong-field ionization with few-cycle, mid-infrared laser pulses induces a localized ionization followed by long-lasting charge migration in halogenated organic molecules","authors":"Kyle A. Hamer, Francois Mauger, Kenneth Lopata, Kenneth J. Schafer, Mette B. Gaarde","doi":"arxiv-2408.04766","DOIUrl":"https://doi.org/arxiv-2408.04766","url":null,"abstract":"We show that applying a few-femtosecond mid-infrared laser pulse parallel to\u0000the backbone of a halogenated, conjugated organic molecule induces localized\u0000ionization followed by long-lasting field-free charge migration (CM). Through\u0000time-dependent density-functional theory calculations, we find that this CM is\u0000robust with respect to the parameters of the applied laser pulse. We document\u0000the spatial and temporal origin of the localized hole, which is initiated via\u0000strong-field tunnel ionization in the halogen end of the molecule, and near the\u0000peak of the laser electric field. In bromobutadiyne we find a range of\u0000wavelengths around $1500~text{nm}$ that consistently leads to the initiation\u0000of high-contrast CM. In addition, we show that the inclusion of Ehrenfest\u0000nuclear dynamics does not disrupt the creation of the localized hole, nor the\u0000subsequent CM motion, in bromobutadiyne or emph{para}-bromoaniline.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"95 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calculation of the correlation, relativistic and QED corrections to the total electron binding energy in atoms and their nuclear charge dependence 计算原子中电子总结合能的相关修正、相对论修正和 QED 修正及其核电荷相关性
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-08 DOI: arxiv-2408.04231
V. A. Dzuba, V. V. Flambaum, A. V. Afanasjev
{"title":"Calculation of the correlation, relativistic and QED corrections to the total electron binding energy in atoms and their nuclear charge dependence","authors":"V. A. Dzuba, V. V. Flambaum, A. V. Afanasjev","doi":"arxiv-2408.04231","DOIUrl":"https://doi.org/arxiv-2408.04231","url":null,"abstract":"We present relativistic many-body calculations of total electron binding\u0000energy of neutral atoms up to element $Z=120$. Binding energy for ions may be\u0000found by subtracting known ionization potentials. Accuracy of the results for\u0000$17<Z le105$ significantly exceeds that in NIST tables (there are no data for\u0000$Z>105$ there). We fit numerical results for binding energies by analytical\u0000function of $Z$. We also calculate numerical values and determine dependence on\u0000$Z$ of the correlation corrections, Dirac and Breit relativistic corrections\u0000and quantum electrodynamics (QED) corrections.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Internal diffraction dynamics of trilobite molecules 三叶虫分子的内部衍射动力学
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-04 DOI: arxiv-2408.02134
Rohan Srikumar, Seth T. Rittenhouse, Peter Schmelcher
{"title":"Internal diffraction dynamics of trilobite molecules","authors":"Rohan Srikumar, Seth T. Rittenhouse, Peter Schmelcher","doi":"arxiv-2408.02134","DOIUrl":"https://doi.org/arxiv-2408.02134","url":null,"abstract":"Trilobite molecules are ultralong-range Rydberg molecules formed when a high\u0000angular momentum Rydberg electron scatters off of a ground-state atom. Their\u0000unique electronic structure and highly oscillatory potential energy curves\u0000support a rich variety of dynamical effects yet to be explored. We analyze the\u0000vibrational motion of these molecules using a framework of adiabatic wavepacket\u0000propagation dynamics and observe that for appropriate initial states, the\u0000trilobite potential acts as molecular diffraction grating. The quantum dynamic\u0000effects observed are explained using a Fourier analysis of the scattering\u0000potential and the associated scattered wavepacket. Furthermore, vibrational\u0000ground-states of the low angular momentum ultralong-range Rydberg molecules are\u0000found to be particularly suitable to prepare the relevant wavepackets. Hence,\u0000we propose a time resolved pump-probe scheme designed for the realization of\u0000the effect in question, and advertise the utilization of a single diatomic\u0000Rydberg molecule as a testbed for the study of exaggerated quantum dynamical\u0000phenomena.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Slow molecular beams from a cryogenic buffer gas source 来自低温缓冲气源的慢速分子束
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-03 DOI: arxiv-2408.01862
A. D. White, S. Popa, J. Mellado-Munoz, N. J. Fitch, B. E. Sauer, J. Lim, M. R. Tarbutt
{"title":"Slow molecular beams from a cryogenic buffer gas source","authors":"A. D. White, S. Popa, J. Mellado-Munoz, N. J. Fitch, B. E. Sauer, J. Lim, M. R. Tarbutt","doi":"arxiv-2408.01862","DOIUrl":"https://doi.org/arxiv-2408.01862","url":null,"abstract":"We study the properties of a cryogenic buffer gas source that uses a low\u0000temperature two-stage buffer gas cell to produce very slow beams of ytterbium\u0000monofluoride molecules. The molecules are produced by laser ablation inside the\u0000cell and extracted into a beam by a flow of cold helium. We measure the flux\u0000and velocity distribution of the beam as a function of ablation energy, helium\u0000flow rate, cell temperature, and the size of the gap between the first and\u0000second stages of the cell. We also compare the velocity distributions from\u0000one-stage and two-stage cells. The one-stage cell emits a beam with a speed of\u0000about 82 m s$^{-1}$ and a translational temperature of 0.63 K. The slowest\u0000beams are obtained using the two-stage cell at the lowest achievable cell\u0000temperature of 1.8 K. This beam has a peak velocity of 56 m s$^{-1}$ and a flux\u0000of $9 times 10^9$ ground state molecules per steradian per pulse, with a\u0000substantial fraction at speeds below 40 m s$^{-1}$. These slow molecules can be\u0000decelerated further by radiation pressure slowing and then captured in a\u0000magneto-optical trap.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measurement of microwave polarization using two polarization orthogonal local microwave electric fields in a Rydberg atom-based mixer 在基于雷德贝格原子的混频器中使用两个偏振正交局部微波电场测量微波偏振
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-02 DOI: arxiv-2408.00988
Weibo Yin, Jianan Zhang, Fengdong Jia, Yuhan Wang, Yuxiang Wang, Jianhai Hao, Yue Cui, Ya Liu, Zhiping Zhong
{"title":"Measurement of microwave polarization using two polarization orthogonal local microwave electric fields in a Rydberg atom-based mixer","authors":"Weibo Yin, Jianan Zhang, Fengdong Jia, Yuhan Wang, Yuxiang Wang, Jianhai Hao, Yue Cui, Ya Liu, Zhiping Zhong","doi":"arxiv-2408.00988","DOIUrl":"https://doi.org/arxiv-2408.00988","url":null,"abstract":"We propose and demonstrate a novel method for measuring the polarization\u0000direction of a microwave electric field in a single measurement using a Rydberg\u0000atom-based mixer with two orthogonally polarized local microwave electric\u0000fields. Furthermore, introducing a weak static magnetic field enables the\u0000utilization of the Zeeman effect and exploitation of polarization asymmetry.\u0000This distinction allows for determining the polarization direction of the\u0000microwave field is{theta}or180{deg}-{theta}within the 0 to 180 degree range.\u0000This is the first real-time measurement of microwave polarization within 0 to\u0000180 degrees, crucial for microwave sensing and information transmission.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"198 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Long-lived metastable-qubit memory 长寿命可变量子比特存储器
arXiv - PHYS - Atomic Physics Pub Date : 2024-08-02 DOI: arxiv-2408.00975
Xiaoyang Shi, Jasmine Sinanan-Singh, Kyle DeBry, Susanna L. Todaro, Isaac L. Chuang, John Chiaverini
{"title":"Long-lived metastable-qubit memory","authors":"Xiaoyang Shi, Jasmine Sinanan-Singh, Kyle DeBry, Susanna L. Todaro, Isaac L. Chuang, John Chiaverini","doi":"arxiv-2408.00975","DOIUrl":"https://doi.org/arxiv-2408.00975","url":null,"abstract":"Coherent storage of quantum information is crucial to many quantum\u0000technologies. Long coherence times have been demonstrated in trapped-ion\u0000qubits, typically using the hyperfine levels within the ground state of a\u0000single ion. However, recent research suggests qubits encoded in metastable\u0000states could provide architectural benefits for quantum information processing,\u0000such as the possibility of effective dual-species operation in a single-species\u0000system and erasure-error conversion for fault-tolerant quantum computing. Here\u0000we demonstrate long-lived encoding of a quantum state in the metastable states\u0000of a trapped ion. By sympathetically cooling with another ion of the same\u0000species and constantly monitoring for erasure errors, we demonstrate a\u0000coherence time of 136(42) seconds with a qubit encoded in the metastable\u0000$5D_{5/2}$ state of a single $^{137}$Ba$^+$ ion. In agreement with a model\u0000based on empirical results from dynamical-decoupling-based noise spectroscopy,\u0000we find that dephasing of the metastable levels is the dominant source of error\u0000once erasure errors are removed.","PeriodicalId":501039,"journal":{"name":"arXiv - PHYS - Atomic Physics","volume":"164 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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