<i>Rydberg Atoms</i>

Gallagher, T. F.; Uzer, T.

doi:10.1063/1.2808169

Cited by 284 publications

(507 citation statements)

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“…The spectral line is detected through state-selective field ionization 12 , in which Rydberg atoms are ionized by a ramped electric field. Freed electrons are detected by a micro-channel plate, and detections on the micro-channel plate are registered by a pulse counter.…”

Section: Methodsmentioning

confidence: 99%

“…Rydberg-atom optical lattices are an ideal tool for this demonstration because the atoms' electronic probability distributions can extend over several wells of the optical lattice 11 , and Rydberg-Rydberg transitions are in the microwave regime 12 , a regime in which light-modulation technology exists. To further illuminate the use of such an intensity-modulated optical lattice for a demonstration of ponderomotive spectroscopy, we briefly examine the physics underlying the interaction between the Rydberg atom and the lattice light.…”

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confidence: 99%

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Forbidden atomic transitions driven by an intensity-modulated laser trap

2015

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Spectroscopy is an essential tool in understanding and manipulating quantum systems, such as atoms and molecules. The model describing spectroscopy includes the multipole-field interaction, which leads to established spectroscopic selection rules, and an interaction that is quadratic in the field, which is not often employed. However, spectroscopy using the quadratic (ponderomotive) interaction promises two significant advantages over spectroscopy using the multipole-field interaction: flexible transition rules and vastly improved spatial addressability of the quantum system. Here we demonstrate ponderomotive spectroscopy by using optical-lattice-trapped Rydberg atoms, pulsating the lattice light and driving a microwave atomic transition that would otherwise be forbidden by established spectroscopic selection rules. This ability to measure frequencies of previously inaccessible transitions makes possible improved determinations of atomic characteristics and constants underlying physics. The spatial resolution of ponderomotive spectroscopy is orders of magnitude better than the transition frequency would suggest, promising single-site addressability in dense particle arrays for quantum computing applications.

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Forbidden atomic transitions driven by an intensity-modulated laser trap

2015

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“…We choose the Rydberg states |i ≡ |np 1/2 , F = 2, M F = −1 and |r ≡ |(n + 1)s 1/2 , F = 1, M F = 0 with n = 68 the principal quantum number. The quantum defects for the s 1/2 and p 1/2 Rydberg states of Rb are δ s = 3.131 and δ p = 2.6545 [26], with which the corresponding transition frequency is ω ri = 2π × 12.2 GHz. Calculation of the relevant transition dipole matrix element involving the radial and angular parts gives ℘ ir 1520a 0 e.…”

Section: Implementation In a Nv Center Ensemblementioning

confidence: 99%

“…This limitation can be overcome by using polar molecules [1][2][3] or Rydberg atoms [5,6,26,27] which couple strongly to the cavity field to assist the transfer of quantum information (QI). Alternatively, we may employ ensembles with N 1 spins (atoms),whose √ N scaling enhances the coupling to collective states of the ensemble [8,9,28].…”

Section: Introductionmentioning

confidence: 99%

Controlling quantum information processing in hybrid systems on chips

Bensky

Amsuss

Majer

et al. 2011

Quantum Inf Process

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We investigate quantum information processing, transfer and storage in hybrid systems comprised of diverse blocks integrated on chips. Strong coupling between superconducting (SC) qubits and ensembles of ultracold atoms or NV-center spins is mediated by a microwave transmission-line resonator that interacts near-resonantly with the atoms or spins. Such hybrid devices allow us to benefit from the advantages of each block and compensate for their disadvantages. Specifically, the SC qubits can rapidly implement quantum logic gates, but are "noisy" (prone to decoherence), while collective states of the atomic or spin ensemble are "quiet"(protected from decoherence) and thus can be employed for storage of quantum information. To improve the overall performance (fidelity) of such devices we discuss dynamical control to optimize quantum state-transfer from a "noisy" qubit to the "quiet" storage ensemble. We propose to maximize the fidelity of transfer and storage in a spectrally inhomogeneous spin ensemble, by pre-selecting the optimal spectral portion of the ensemble. Significant improvements of the overall fidelity of hybrid devices are expected under realistic conditions. Experimental progress towards the realization of these schemes is discussed.

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“…A detailed discussion is beyond the scope of this work and would require a careful analysis of the subtleties of each system. Rydberg atoms [Gal88] are highly sensitive to electric or magnetic fields. In an electric field the energy levels of a Rydberg atom split into a manifold of states [Zim79].…”

Section: • Atoms In Trapsmentioning

confidence: 99%