Cold Rydberg Atoms

Choi, Jongsoo; Knuffman, B.; Liebisch, Tara Cubel; Reinhard, Aaron; Raithel, Georg

doi:10.1016/s1049-250x(06)54003-0

Cited by 23 publications

(19 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We intend to summarize each topic with a brief description of the fundamental principle and with the most up-to-date experimental demonstrations. However, we need to mention that a number of seminal review articles on various specific topics such as Rydberg atoms in external fields [7], Rydberg atom interactions [35,36], quantum information application of Rydberg atoms [30], and ultra-cold plasmas [37] already exist. Still, the reason we prepared another review article on cold Rydberg atoms was in part because the development speed of this fast-growing research field allowed another up-to-date worthwhile review article and in part because this invited article was prepared as part of the special topical edition of articles on cold atoms and molecule research in the Journal of the Korean Physical Society.…”

Section: Introductionmentioning

confidence: 99%

Review of cold Rydberg atoms and their applications

Lim

Lee

Ahn

2013

Journal of the Korean Physical Society

View full text Add to dashboard Cite

We present an introductory review of the latest advancements cold Rydberg atom research. First, we briefly summarize the exaggerated properties of Rydberg atoms, and we discuss the new perspectives of Rydberg atom research that has been enabled by laser cooling and trapping technique. We then highlight the latest developments and achievements in the newly emerged research fields for Rydberg molecules and cold neutral plasmas. Various applications of the Rydberg blockade effect for quantum optics and quantum information science are also reviewed.

show abstract

Section: Introductionmentioning

confidence: 99%

Review of cold Rydberg atoms and their applications

Lim

Lee

Ahn

2013

Journal of the Korean Physical Society

View full text Add to dashboard Cite

show abstract

“…In this Letter we address the question to which extent a narrow unshifted CPT resonance persists in a multi-particle system with tunable interactions. More specifically, we investigate the three-level excitation of a gas of Rydberg atoms which are subjected to long-range van der Waals interactions in the blockade regime [7][8][9]. Rydberg atoms offer significant interparticle interactions over large distances which can be conveniently tuned by choosing the appropriate excited Rydberg state [10].…”

mentioning

confidence: 99%

Coherent Population Trapping with Controlled Interparticle Interactions

et al. 2010

View full text Add to dashboard Cite

We investigate Coherent Population Trapping in a strongly interacting ultracold Rydberg gas. Despite the strong van der Waals interactions and interparticle correlations, we observe the persistence of a resonance with subnatural linewidth at the single-particle resonance frequency as we tune the interaction strength. This narrow resonance cannot be understood within a meanfield description of the strong Rydberg-Rydberg interactions. Instead, a many-body density matrix approach, accounting for the dynamics of interparticle correlations, is shown to reproduce the observed spectral features.PACS numbers: 42.50. Gy,42.50.Ct,32.80.Ee Coherent population trapping (CPT), i.e. the population of a quantum state decoupled from a resonant light field, serves as a paradigm for a quantum interference effect [1]. First observed in 1976 [2], CPT with its related phenomena electromagnetically induced transparency (EIT) [3,4] and stimulated Raman adiabatic passage (STIRAP) [5] has provided the basis for a large variety of effects and applications in many areas of physics, such as high-resolution spectroscopy, coherent control, metrology, quantum information and quantum gases. While CPT, EIT and STIRAP are generally described in terms of isolated single-atom interactions with coherent light fields, the situation becomes more involved when interactions between the particles need to be considered.To gain initial insights into the effects of interactions on the quantum interference in CPT, consider two atoms with a three-level ladder structure with states |1 , |2 and |3 as shown in Fig. 1(a). The atoms are exposed to two resonant coherent light fields and interact only if both of them are in the highly excited atomic state |3 . In the case of non-interacting atoms the population accumulates in the two-body product state of the single-particle dark state |d which is a coherent superposition of |1 and |3 [1]. This state is defined as the eigenstate of the total Hamiltonian with vanishing coupling to the coherent light field. When turning on the interparticle interaction this state is no longer a dark state as it is no longer an eigenstate of the total Hamiltonian. As pointed out in [6], the two interacting atoms, nevertheless, possess two dark states |d ± . These states are dissipative due to the admixture of the intermediate, decaying state |2 , but are significantly populated by optical pumping. While these states have dissipative character, they do not contain the state |33 and are, thus, immune to interactions.In a first approach to a many-particle system one could apply a meanfield model by replacing many-body opera- PSfrag replacementsFIG. 1: (a) Excitation scheme ( 87 Rb). Ω1 and Ω2 are the Rabi frequencies at 780 and 480 nm, respectively, δ is the detuning of the upper transition; (b) calculated Rydberg state population, produced by the two-step sequence described in the text. The upper panel shows the result of a meanfield calculation, which predicts a strong shift and broadening of the resonance line. On the contrary, the...

show abstract

“…Magnetic trapping of ground state atoms, as an important prerequisite to forming magnetically trapped Rydberg gases, has been demonstrated in the group of Raithel [26,59]. Several millions of rubidium atoms were accumulated and laser cooled in a superconducting Ioffe-Pritchard trap operating at large bias fields of up to 2.9 Tesla.…”

Section: B Cold Gases In Strong Magnetic Fieldsmentioning

confidence: 99%

“…A range of questions, arising from the collective excitation dynamics in cold Rydberg gases [15,16,17,18,19,20,21,22,23,24] and the formation and non-equilibrium evolution of ultracold neutral plasmas [15,16,17,18,19,20,21,22,23,24] have been studied in experiment and theory. Since outlining these emerging topics is certainly beyond the scope of the present article, we refer to some recent review articles [25,26,27] for more comprehensive discussions.…”

Section: Introductionmentioning

confidence: 99%

Cold and ultracold Rydberg atoms in strong magnetic fields

2009

View full text Add to dashboard Cite

Cold Rydberg atoms exposed to strong magnetic fields possess unique properties which open the pathway for an intriguing many-body dynamics taking place in Rydberg gases consisting of either matter or anti-matter systems. We review both the foundations and recent developments of the field in the cold and ultracold regime where trapping and cooling of Rydberg atoms have become possible. Exotic states of moving Rydberg atoms such as giant dipole states are discussed in detail, including their formation mechanisms in a strongly magnetized cold plasma. Inhomogeneous field configurations influence the electronic structure of Rydberg atoms, and we describe the utility of corresponding effects for achieving tightly trapped ultracold Rydberg atoms. We review recent work on large, extended cold Rydberg gases in magnetic fields and their formation in strongly magnetized ultracold plasmas through collisional recombination. Implications of these results for current antihydrogen production experiments are pointed out, and techniques for trapping and cooling of such atoms are investigated.

show abstract

Cold Rydberg Atoms

Cited by 23 publications

References 87 publications

Review of cold Rydberg atoms and their applications

Review of cold Rydberg atoms and their applications

Coherent Population Trapping with Controlled Interparticle Interactions

Cold and ultracold Rydberg atoms in strong magnetic fields

Contact Info

Product

Resources

About