State-dependent fluorescence of neutral atoms in optical potentials

Martinez-Dorantes, M.; Alt, Wolfgang; Gállego, José T.; Ghosh, Sutapa; Ratschbacher, Lothar; Meschede, Dieter

doi:10.1103/physreva.97.023410

Cited by 18 publications

(29 citation statements)

References 35 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the fluorescence imaging, when the molasses beam are let on, the single atom lifetime is reduced to 8 s while the atom temperature does not increase. This could be due to the trapped atom dynamics under illumination with cooling light [40] or to residual loading from background Rb vapor. The atom can thus leave the trap during the 50 ms fluorescence images and we estimate that this second cause of detection errors amount to 0.6 %.…”

Section: State Preparation and Detection Errorsmentioning

confidence: 99%

Analysis of imperfections in the coherent optical excitation of single atoms to Rydberg states

et al. 2018

View full text Add to dashboard Cite

We study experimentally various physical limitations and technical imperfections that lead to damping and finite contrast of optically-driven Rabi oscillations between ground and Rydberg states of a single atom. Finite contrast is due to preparation and detection errors and we show how to model and measure them accurately. Part of these errors originates from the finite lifetime of Rydberg states and we observe its n 3 -scaling with the principal quantum number n. To explain the damping of Rabi oscillations, we use simple numerical models, taking into account independently measured experimental imperfections, and show that the observed damping actually results from the accumulation of several small effects, each at the level of a few percents. We discuss prospects for improving the coherence of ground-Rydberg Rabi oscillations in view of applications in quantum simulation and quantum information processing with arrays of single Rydberg atoms.

show abstract

Section: State Preparation and Detection Errorsmentioning

confidence: 99%

Analysis of imperfections in the coherent optical excitation of single atoms to Rydberg states

et al. 2018

View full text Add to dashboard Cite

show abstract

“…When the SDB is weak and on-resonance, the internal atomic dynamics can be described by quantum jumps between ground and excited states. In a very simple model, which assumes a perfectly flat excited state potential U e = 0, we find an exponential DFF heating with rate Ė/E = 2U g /(mΓ 2 ) [20], where U g is the curvature of the trapping potential, E is the total energy, m the mass of the atom, Γ the exited-state decay rate and Ė is the average energy gain [21]. This result indicates that for steep optical traps with tight confinement (e.g.…”

mentioning

confidence: 99%

Fast Nondestructive Parallel Readout of Neutral Atom Registers in Optical Potentials

et al. 2017

Self Cite

View full text Add to dashboard Cite

We demonstrate the parallel and nondestructive readout of the hyperfine state for optically trapped ^{87}Rb atoms. The scheme is based on state-selective fluorescence imaging and achieves detection fidelities >98% within 10 ms, while keeping 99% of the atoms trapped. For the readout of dense arrays of neutral atoms in optical lattices, where the fluorescence images of neighboring atoms overlap, we apply a novel image analysis technique using Bayesian inference to determine the internal state of multiple atoms. Our method is scalable to large neutral atom registers relevant for future quantum information processing tasks requiring fast and nondestructive readout and can also be used for the simultaneous readout of quantum information stored in internal qubit states and in the atoms' positions.

show abstract

“…The earliest experiments with neutral-atom microtraps employed large vacuum systems and customdesigned optics [17]. More recent works have employed high-NA aspheric lenses in smaller vacuum systems, which has enabled experiments with high-NA optical access from two [2,18] and four [19][20][21][22] directions. The latter scenario is known as the Maltese cross geometry (MCG) when the lenses are placed on the cardinal directions, as illustrated in Figure 1.…”

mentioning

confidence: 99%

Manipulating and measuring single atoms in the Maltese cross geometry

Bianchet¹,

Alves²,

Zarraoa³

et al. 2021

Preprint

View full text Add to dashboard Cite

We describe optical methods for trapping, cooling, and observing single 87 Rb atoms in a four-lens "Maltese cross" geometry (MCG). The use of four high numerical-aperture lenses in the cardinal directions enables efficient collection of light from non-collinear directions, but also restricts the optical access for cooling and optical pumping tasks. We demonstrate three-dimensional atom localization with sub-wavelength precision, and present measurements of the trap lifetime, temperature and transverse trap frequency in this geometry. We observe a trap performance comparable to what has been reported for single-atom traps with one-or two-lens optical systems, and conclude that the additional coupling directions provided by the MCG come at little cost to other trap characteristics.

show abstract

State-dependent fluorescence of neutral atoms in optical potentials

Cited by 18 publications

References 35 publications

Analysis of imperfections in the coherent optical excitation of single atoms to Rydberg states

Analysis of imperfections in the coherent optical excitation of single atoms to Rydberg states

Fast Nondestructive Parallel Readout of Neutral Atom Registers in Optical Potentials

Manipulating and measuring single atoms in the Maltese cross geometry

Contact Info

Product

Resources

About