GHz Rabi Flopping to Rydberg States in Hot Atomic Vapor Cells

Huber, Bernhard; Baluktsian, T.; Schlagmüller, Michael; Kölle, A.; Kübler, Harald; Löw, Robert; Pfau, Tilman

doi:10.1103/physrevlett.107.243001

Cited by 60 publications

(71 citation statements)

References 27 publications

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“…It is important to note that the lifetime of Rydberg atoms is limited typically to ∼10 microseconds. However, coherent driving as well as interaction timescales have been shown to reach even the GHz level [158,159] which is ultimately limited only by the Kepler frequency -i.e. the energy splitting between adjacent Rydberg states.…”

Section: Quantum Magnetism In Rydberg Atomsmentioning

confidence: 99%

Quantum correlations and entanglement in far-from-equilibrium spin systems

et al. 2014

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By applying complementary analytic and numerical methods, we investigate the dynamics of spin-1/2 XXZ models with variable-range interactions in arbitrary dimensions. The dynamics we consider is initiated from uncorrelated states that are easily prepared in experiments, and can be equivalently viewed as either Ramsey spectroscopy or a quantum quench. Our primary focus is the dynamical emergence of correlations and entanglement in these far-from-equilibrium interacting quantum systems: we characterize these correlations by the entanglement entropy, concurrence, and squeezing, which are inequivalent measures of entanglement corresponding to different quantum resources. In one spatial dimension, we show that the time evolution of correlation functions manifests a non-perturbative dynamic singularity. This singularity is characterized by a universal power-law exponent that is insensitive to small perturbations. Explicit realizations of these models in current experiments using polar molecules, trapped ions, Rydberg atoms, magnetic atoms, and alkaline-earth and alkali atoms in optical lattices, along with the relative merits and limitations of these different systems, are discussed.

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Section: Quantum Magnetism In Rydberg Atomsmentioning

confidence: 99%

Quantum correlations and entanglement in far-from-equilibrium spin systems

et al. 2014

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“…Indeed, coherent effects have been observed here as well [19][20][21], and sensitive methods for electric-field measurements in vapor cells [22], as well as an alternative to EIT measurements [23], have been developed.…”

Section: Introductionmentioning

confidence: 99%

Measurement of87Rb Rydberg-state hyperfine splitting in a room-temperature vapor cell

et al. 2013

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Measurement of 87Rb Rydberg-state hyperfine splitting in a room-temperature vapor cell Tauschinsky, F.A.; Newell, R.G.; van Linden van den Heuvell, H.B.; Spreeuw, R.J.C. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We present direct measurements of the hyperfine splitting of Rydberg states in 87 Rb using electromagnetically induced transparency (EIT) spectroscopy in a room-temperature vapor cell. With this method, and in spite of Doppler broadening, linewidths of 3.7 MHz FWHM, i.e., significantly below the intermediate-state natural linewidth, are reached. This allows resolving hyperfine splittings for Rydberg s states with n = 20, . . . ,24. With this method we are able to determine Rydberg state hyperfine splittings with an accuracy of approximately 100 kHz. Ultimately, our method allows accuracies of order 5 kHz to be reached. Furthermore, we present a direct measurement of hyperfine-resolved Rydberg-state Stark shifts. These results will be of great value for future experiments relying on excellent knowledge of Rydberg-state energies and polarizabilities.

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“…Measurement of Rabi oscillations and their damping provides information about the coherence of the system. Decoherence may follow from spontaneous emission [15], external or intrinsic noise [16][17][18][19] and spatial inhomogeneities across the sample, which may be due to inhomogeneities of external fields or due to the dynamics of the two-level systems themselves during the oscillations (e.g. dipoledipole interactions) [19,20].…”

Section: Introductionmentioning

confidence: 99%

Damping of local Rabi oscillations in the presence of thermal motion

et al. 2013

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We investigate both theoretically and experimentally the effect of thermal motion of laser cooled atoms on the coherence of Rabi oscillations induced by an inhomogeneous driving field. The experimental results are in excellent agreement with the derived analytical expressions. For freely falling atoms with negligible collisions, as those used in our experiment, we find that the amplitude of the Rabi oscillations decays with time t as exp[−(t/τ ) 4 ] , where the coherence time τ drops with increasing temperature and field gradient. We discuss the consequences of these results regarding the fidelity of Rabi rotations of atomic qubits. We also show that the process is equivalent to the loss of coherence of atoms undergoing a Ramsey sequence in the presence of static magnetic field gradients -a common situation in many applications. In addition, our results are relevant for determining the resolution when utilizing atoms as field probes. Using numerical calculations, our model can be easily extended to situations in which the atoms are confined by a potential or to situations where collisions are important.

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GHz Rabi Flopping to Rydberg States in Hot Atomic Vapor Cells

Cited by 60 publications

References 27 publications

Quantum correlations and entanglement in far-from-equilibrium spin systems

Quantum correlations and entanglement in far-from-equilibrium spin systems

Measurement of87Rb Rydberg-state hyperfine splitting in a room-temperature vapor cell

Damping of local Rabi oscillations in the presence of thermal motion

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