arXiv 1202.45592012-02physics.atom-phquant-ph

Interferometric thermometry of a single sub-Doppler cooled atom

L. Slodička, G. Hétet, N. Röck, S. Gerber, P. Schindler, M. Kumph, M. Hennrich, R. Blatt

备注：: 6 pages, 6 figures
发表信息：: Phys. Rev. A 85, 043401 (2012)
DOI：: 10.1103/PhysRevA.85.043401

英文摘要：

Efficient self-interference of single-photons emitted by a sideband-cooled Barium ion is demonstrated. First, the technical tools for performing efficient coupling to the quadrupolar transition of a single $^{138}$Ba$^{+}$ ion are presented. We show efficient Rabi oscillations of the internal state of the ion using a highly stabilized 1.76 $μm$ fiber laser resonant with the S$_{1/2}$-D$_{5/2}$ transition. We then show sideband cooling of the ion's motional modes and use it as a means to enhance the interference contrast of the ion with its mirror-image to up to 90%. Last, we measure the dependence of the self-interference contrast on the mean phonon number, thereby demonstrating the potential of the set-up for single-atom thermometry close to the motional ground state.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

阅读原文

阅读 PDF ↗

arXiv 页面 ↗HTML 原文 ↗

本文内容

英文摘要相关论文

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

继续探索

相关论文

Sub-milliKelvin spatial thermometry of a single Doppler cooled ion in a Paul trap

We report on observations of thermal motion of a single, Doppler-cooled ion along the axis of a linear radio-frequency quadrupole trap. We show that for a harmonic potential the thermal occupation of energy levels leads to Gaussian distribution of the ion's axial position. The dependence of the spatial thermal spread on the trap potential is used for precise calibration of our imaging system's point spread function and sub-milliKelvin thermometry. We employ this technique to investigate the laser detuning dependence of the Doppler temperature.

2012-03-01physics.atom-ph

Absolute Single Ion Thermometry

We describe and experimentally implement a single-ion local thermometry technique with absolute sensitivity adaptable to all laser-cooled atomic ion species. The technique is based on the velocity-dependent spectral shape of a quasi-dark resonance tailored in a J $\rightarrow$ J transition such that the two driving fields can be derived from the same laser source leading to a negligible relative phase shift. We validated the method and tested its performances in an experiment on a single 88 Sr + ion cooled in a surface radio-frequency trap. We first applied the technique to characterise the he…

2018-09-28physics.atom-phquant-ph

Optimized pulsed sideband cooling and enhanced thermometry of trapped ions

Resolved sideband cooling is a standard technique for cooling trapped ions below the Doppler limit to near their motional ground state. Yet, the most common methods for sideband cooling implicitly rely on low Doppler-cooled temperatures and tightly confined ions, and they cannot be optimized for different experimental conditions. Here we introduce a framework which calculates the fastest possible pulsed sideband cooling sequence for a given number of pulses and set of experimental parameters, and we verify its improvement compared to traditional methods using a trapped $^{171}$Yb$^+$ ion. Afte…

2021-09-28physics.atom-phquant-ph

离子晶体的边带测温法

Sideband thermometry of ion crystals

本文提出一种适用于离子晶体的新型边带测温法，可处理所有运动模式且无计算瓶颈，并通过4离子链和19离子二维晶体实验验证其准确高效。

2023-10-18physics.atom-phquant-ph

Optimal cold atom thermometry using adaptive Bayesian strategies

Precise temperature measurements on systems of few ultracold atoms is of paramount importance in quantum technologies, but can be very resource-intensive. Here, we put forward an adaptive Bayesian framework that substantially boosts the performance of cold atom temperature estimation. Specifically, we process data from real and simulated release--recapture thermometry experiments on few potassium atoms cooled down to the microkelvin range in an optical tweezer. From simulations, we demonstrate that adaptively choosing the release--recapture times to maximise information gain does substantially…

2022-10-21cond-mat.quant-gasphysics.atom-phquant-ph

Experimental apparatus for overlapping a ground-state cooled ion with ultracold atoms

Experimental realizations of charged ions and neutral atoms in overlapping traps are gaining increasing interest due to their wide research application ranging from chemistry at the quantum level to quantum simulations of solid-state systems. Here, we describe a system in which we overlap a single ground-state cooled ion trapped in a linear Paul trap with a cloud of ultracold atoms such that both constituents are in the $μ$K regime. Excess micromotion (EMM) currently limits atom-ion interaction energy to the mK energy scale and above. We demonstrate spectroscopy methods and compensation techni…

2017-05-07cond-mat.quant-gasphysics.atom-phquant-ph

更多相关论文收起更多论文

利用 Rydberg 多普勒展宽热力学测量的空间分辨温度测量

Spatially Resolved Temperature Measurement Using Rydberg Doppler Broadening Thermometry

Università di Pisa（比萨大学）；CNR-INO（意大利国家研究委员会光学研究所）；University of Florence（佛罗伦萨大学）；ETH Zürich（苏黎世联邦理工学院）；Universität Innsbruck（因斯布鲁克大学）；Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften（奥地利科学院量子光学与量子信息研究所）；Observatoire de Paris, Université PSL, CNRS, Sorbonne Université（巴黎天文台，巴黎文理研究大学，法国国家科学研究中心，索邦大学）

本研究提出利用 Rydberg 多普勒展宽热力学进行空间分辨温度测量，通过两束垂直排列的激光激发原子，利用多普勒展宽测量温度，实现局部温度分布的测量。

2026-09-07physics.atom-ph

原子和分子系统用于辐射热力学计

Atomic and molecular systems for radiation thermometry

本文提出利用原子和分子构建辐射温度标准和传感器，通过精确测量黑体辐射激发或发射速率，展示了冷原子温度计和紧凑型黑体辐射原子传感器的原理与性能。

2025-12-11physics.atom-ph

Atom interferometric techniques for measuring uniform magnetic field gradients and gravitational acceleration

We discuss techniques for probing the effects of a constant force acting on cold atoms using two configurations of a grating echo-type atom interferometer. Laser-cooled samples of $^{85}$Rb with temperatures as low as 2.4 $μ$K have been achieved in a new experimental apparatus with a well-controlled magnetic environment. We demonstrate interferometer signal lifetimes approaching the transit time limit in this system ($\sim 270$ ms), which is comparable to the timescale achieved by Raman interferometers. Using these long timescales, we experimentally investigate the influence of a homogeneous m…

2011-12-05physics.atom-phquant-ph

Sensing Atomic Motion from the Zero Point to Room Temperature with Ultrafast Atom Interferometry

We sense the motion of a trapped atomic ion using a sequence of state-dependent ultrafast momentum kicks. We use this atom interferometer to characterize a nearly-pure quantum state with $n=1$ phonon and accurately measure thermal states ranging from near the zero-point energy to $\bar{n}\sim 10^4$, with the possibility of extending at least 100 times higher in energy. The complete energy range of this method spans from the ground state to far outside of the Lamb-Dicke regime, where atomic motion is greater than the optical wavelength. Apart from thermometry, these interferometric techniques a…

2016-03-22physics.atom-phquant-ph

Spectroscopy and ion thermometry of C$_{2}^{-}$ using laser-cooling transitions

A prerequisite for laser cooling a molecular anion, which has not been achieved so far, is the precise knowledge of the relevant transition frequencies in the cooling scheme. To determine these frequencies we present a versatile method that uses one pump and one photodetachment light beam. We apply this approach to C$_{2}^{-}$ and study the laser cooling transitions between the electronic ground state and the second electronic excited state in their respective vibrational ground levels, $B ^{2} Σ_{u} ^{+}(v=0) \leftarrow X ^{2} Σ_{g} ^{+}(v=0) $. Measurements of the R(0), R(2), and P(2) transi…

2022-06-30physics.atom-phphysics.chem-ph

Towards MIGO, the Matter-wave Interferometric Gravitational-wave Observatory, and the Intersection of Quantum Mechanics with General Relativity

A dynamical, non-Euclidean spacetime geometry in general relativity theory implies the possibility of gravitational radiation. Here we explore novel methods of detecting such radiation from astrophysical sources by means of matter-wave interferometers (MIGOs), using atomic beams emanating from supersonic atomic sources that are further cooled and collimated by means of optical molasses. While the sensitivities of such MIGOs compare favorably with LIGO and LISA, the sizes of MIGOs can be orders of magnitude smaller, and their bandwidths wider. Using a pedagogical approach, we place this problem…

2004-03-11astro-phgr-qchep-th

对称性调控的热激活在金字塔型库仑簇中的作用：测试克拉默-兰杰理论

Symmetry-controlled thermal activation in pyramidal Coulomb clusters: Testing Kramers-Langer theory

Raman Research Institute（拉曼研究所）；Department of Physics, University of Toronto（多伦多大学物理系）

该研究通过调控离子排列对称性，展示了热激活翻转机制，并验证了克拉默-兰杰理论在离子簇中的应用。

2026-01-08cond-mat.stat-mechphysics.atom-ph

三维微波场的自校准多参数测量

Self-calibrated multiparameter measurement of three-dimensional microwave fields

提出并实现基于激光冷却原子系综的多能级塞曼分辨里德伯电磁感应透明光谱，从单一光谱中提取三维微波场的偏振幅度和相对相位，实现自校准测量。

2026-05-25physics.atom-ph

量子极限下可调的爱因斯坦-玻尔 recoil 缝隙 gedankenexperiment

Tunable Einstein-Bohr recoiling-slit gedankenexperiment at the quantum limit

本文利用光镊中三维冷却至运动基态的单原子，忠实实现了爱因斯坦-玻尔可移动缝隙干涉仪，通过动态调谐原子动量波函数证明了其量子本质，并揭示了由原子加热和进动导致的量子到经典转变。

2024-10-14physics.atom-phphysics.opticsphysics.pop-ph