“Ultracold” Neutral Plasmas at Room Temperature

Heilmann, Nathan; Peatross, Justin; Bergeson, Scott

doi:10.1103/physrevlett.109.035002

Cited by 14 publications

(11 citation statements)

References 26 publications

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“…Formed under laboratory conditions in magneto-optical traps (MOT) [2] or supersonic molecular beams [3,4], they directly display the influence of long-range interactions on collective properties, such as density oscillations [5], ambipolar expansion [6] and recombination [7][8][9].…”

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confidence: 99%

Dissociation and the Development of Spatial Correlation in a Molecular Ultracold Plasma

et al. 2014

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Penning ionization initiates the evolution of a dense molecular Rydberg gas to plasma. This process selects for pairs of excited molecules separated by a distance of two Rydberg orbital diameters or less. The deactivated Penning partners predissociate, depleting the leading edge of the distribution of nearest-neighbor distances. For certain density and orbital radii, this sequence of events can form a plasma in which large distances separate a disproportionate fraction of the ions. Experimental results and model calculations suggest that the reduced potential energy of this Penning lattice significantly affects the development of strong coupling in an ultracold plasma.

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confidence: 99%

Dissociation and the Development of Spatial Correlation in a Molecular Ultracold Plasma

et al. 2014

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“…The field continues to expand into new areas. UCNPs are now also created with femtosecond lasers in atomic beams [109], and from molecules in a supersonic molecular beam [106]. The latter introduces molecular processes such as dissociative recombination.…”

Section: Statusmentioning

confidence: 99%

Roadmap on quantum optical systems

Dumke

et al. 2016

J. Opt.

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This roadmap bundles fast developing topics in experimental optical quantum sciences, addressing current challenges as well as potential advances in future research. We have focused on three main areas: quantum assisted high precision measurements, quantum information/simulation, and quantum gases. Quantum assisted high precision measurements are discussed in the first three sections, which review optical clocks, atom interferometry, and optical magnetometry. These fields are already successfully utilized in various applied areas. We will discuss approaches to extend this impact even further. In the quantum information/simulation section, we start with the traditionally successful employed systems based on neutral atoms and ions. In addition the marvelous demonstrations of systems suitable for quantum information is not progressing, unsolved challenges remain and will be discussed. We will also review, as an alternative approach, the utilization of hybrid quantum systems based on superconducting quantum devices and ultracold atoms. Novel developments in atomtronics promise unique access in exploring solid-state systems with ultracold gases and are investigated in depth. The sections discussing the continuously fast-developing quantum gases include a review on dipolar heteronuclear diatomic gases, Rydberg gases, and ultracold plasma. Overall, we have accomplished a roadmap of selected areas undergoing rapid progress in quantum optics, highlighting current advances and future challenges. These exciting developments and vast advances will shape the field of quantum optics in the future. 12 Guest editor of the roadmap.

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“…For laser-cooled atom densities, the temperature after DIH is in the 0.5 to 10 K range. We recently published a study of the density evolution in a strongly coupled neutral plasma generated by focusing a fs-duration laser pulse into a room-temperature gas jet [33]. We showed that the ultracold neutral plasma expansion model described this higher-temperature strongly coupled system well, and that it could be used to extract an electron temperature.…”

Section: Ultracold Neutral Plasmas At Room Temperaturementioning

confidence: 99%

A neutral strongly coupled laser-produced plasma by strong-field ionization in a gas jet

Bergeson¹,

Lyon²,

Peatross³

et al. 2015

AIP Conference Proceedings

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We report measurements of a neutral strongly coupled plasma generated by focusing a femtosecond-duration laser pulse into a room-temperature gas jet. The ion temperature in this plasma is determined by the plasma density through the disorder-induced heating effect. We present measurements of the mass, radius, and energy dependence of the time-varying ion density as the plasma expands. Molecular dynamics model indicate that higher values of the strong coupling parameter could be achieved if the plasma is ionized again by a second laser pulse that follows the first one. However, the final value of the coupling parameter appears to be only weakly dependent on the final ionization state.

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“Ultracold” Neutral Plasmas at Room Temperature

Cited by 14 publications

References 26 publications

Dissociation and the Development of Spatial Correlation in a Molecular Ultracold Plasma

Dissociation and the Development of Spatial Correlation in a Molecular Ultracold Plasma

Roadmap on quantum optical systems

A neutral strongly coupled laser-produced plasma by strong-field ionization in a gas jet

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