Search Results - "Karr, J. Ph"

Fundamental Transitions and Ionization Energies of the Hydrogen Molecular Ions with Few ppt Uncertainty by Korobov, Vladimir I, Hilico, L, Karr, J-Ph

“…We calculate ionization energies and fundamental vibrational transitions for H_{2}^{+}, D_{2}^{+}, and HD^{+} molecular ions. The nonrelativistic quantum…”
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Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD by Biesheuvel, J., Karr, J.-Ph, Hilico, L., Eikema, K. S. E., Ubachs, W., Koelemeij, J. C. J.

“…The simplest molecules in nature, molecular hydrogen ions in the form of H 2 + and HD + , provide an important benchmark system for tests of quantum…”
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Extraction of spin-averaged rovibrational transition frequencies in HD+ for the determination of fundamental constants by Karr, J.-Ph, Koelemeij, Jeroen C. J.

“…We present a comprehensive analysis of all currently available high-accuracy frequency measurements of rotational and rovibrational transitions in the hydrogen…”
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Proton-electron mass ratio from laser spectroscopy of HD + at the part-per-trillion level by Patra, Sayan, Germann, M, Karr, J-Ph, Haidar, M, Hilico, L, Korobov, V I, Cozijn, F M J, Eikema, K S E, Ubachs, W, Koelemeij, J C J

“…Recent mass measurements of light atomic nuclei in Penning traps have indicated possible inconsistencies in closely related physical constants such as the…”
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Theoretical Hyperfine Structure of the Molecular Hydrogen Ion at the 1 ppm Level by Korobov, Vladimir I, Koelemeij, J C J, Hilico, L, Karr, J-Ph

“…We revisit the mα^{6}(m/M) order corrections to the hyperfine splitting in the H_{2}^{+} ion and find a hitherto unrecognized second-order relativistic…”
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H2+ and HD+: Candidates for a molecular clock by Karr, J.-Ph

“…[Display omitted] •The ac stark shift in ion clocks based on hydrogen molecular ions is evaluated.•It is shown to be a limitation to the clock accuracy for…”
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High-precision spectroscopy of the HD+ molecule at the 1-p.p.b. level by Biesheuvel, J., Karr, J.-Ph, Hilico, L., Eikema, K. S. E., Ubachs, W., Koelemeij, J. C. J.

“…Recently we reported a high-precision optical frequency measurement of the ( v ,  L ): (0, 2) → (8, 3) vibrational overtone transition in trapped deuterated…”
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Calculation of the relativistic Bethe logarithm in the two-center problem by Korobov, Vladimir I., Hilico, L., Karr, J.-Ph

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Three-body QED test and fifth-force constraint from vibrations and rotations of HD by Germann, M., Patra, S., Karr, J.-Ph, Hilico, L., Korobov, V. I., Salumbides, E. J., Eikema, K. S. E., Ubachs, W., Koelemeij, J. C. J.

“…We present a parts-per-million test of quantum electrodynamics (QED) in the HD^{+} molecular hydrogen ion, improving on previous tests based on vibrational and…”
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Observation of the optical spin Hall effect by Leyder, C, Bramati, A, Romanelli, M, Karr, J. Ph, Giacobino, E, Liew, T. C. H, Glazov, M. M, Kavokin, A. V, Malpuech, G

“…The spin Hall effect consists of the generation of a spin current perpendicular to the charge current flow. Thirty-five years after its prediction by Dyakonov…”
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Interference of coherent polariton beams in microcavities: polarization-controlled optical gates by Leyder, C, Liew, T C H, Kavokin, A V, Shelykh, I A, Romanelli, M, Karr, J Ph, Giacobino, E, Bramati, A

“…We demonstrate, theoretically and experimentally, a polarization-controlled optical gate based on a degenerate polariton-polariton scattering process occurring…”
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Quantum degeneracy of microcavity polaritons by Baas, A, Karr, J-Ph, Romanelli, M, Bramati, A, Giacobino, E

“…We investigate experimentally one of the main features of a quantum fluid constituted by exciton polaritons in a semiconductor microcavity, that is, quantum…”
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Hyperfine structure in the hydrogen molecular ion by Korobov, V. I., Hilico, L., Karr, J.-Ph

“…The hyperfine splitting of energy levels in the H2+ molecular ion is calculated within the framework of the spin-dependent part of the Breit-Pauli Hamiltonian…”
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Four wave mixing oscillation in a semiconductor microcavity: generation of two correlated polariton populations by Romanelli, M, Leyder, C, Karr, J Ph, Giacobino, E, Bramati, A

“…We demonstrate a novel kind of polariton four wave mixing oscillation. Two pump polaritons scatter towards final states that emit two beams of equal intensity,…”
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Optical bistability in semiconductor microcavities by Baas, A., Karr, J. Ph, Eleuch, H., Giacobino, E.

“…We report the observation of polaritonic bistability in semiconductor microcavities in the strong-coupling regime. The origin of bistability is the…”
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Parametric polariton amplification in semiconductor microcavities by Messin, G, Karr, J P, Baas, A, Khitrova, G, Houdré, R, Stanley, R P, Oesterle, U, Giacobino, E

“…We present novel experimental results demonstrating the coherence properties of the nonlinear emission from semiconductor microcavities in the strong coupling…”
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One-loop vacuum polarization at mα7 order for the two-center problem by Karr, J.-Ph, Hilico, L, Korobov, Vladimir

“…We present calculations of the one-loop vacuum polarization contribution (Uehling potential) for the two-center problem in the NRQED formalism. The cases of…”
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Proton-Electron Mass Ratio from Laser Spectroscopy of HD$^+$ at the Part-Per-Trillion Level by Patra, Sayan, Germann, M, Karr, J. -Ph, Haidar, M, Hilico, L, Korobov, V. I, Cozijn, F. M. J, Eikema, K. S. E, Ubachs, W, Koelemeij, J. C. J

“…Science 369, 1238-1241 (2020) Accepted values of the masses of several subatomic particles have been under debate since recent measurements in Penning traps…”
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Optical bistability in semiconductor microcavities in the nondegenerate parametric oscillation regime: Analogy with the optical parametric oscillator by BAAS, A, KARR, J.-Ph, ROMANELLI, M, BRAMATI, A, GIACOBINO, E

“…We report the observation of optical bistability in a microcavity pumped at the \"magic angle\". Experimental evidence is given in the form of a hysteresis…”
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Parametric oscillation in semiconductor microcavities: nonlinear and quantum effects by Karr, J. Ph, Baas, A., Romanelli, M., Bramati, A., Giacobino, E.

“…We report the observation of optical bistability in a semiconductor microcavity pumped at the “magic angle” above the parametric oscillation threshold…”
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