155 citations · 707 across the 13 of their papers we have counts for
12 papers
Prospects for the determination of fundamental constants with beyond-state-of-the-art uncertainty using molecular hydrogen ion spectroscopy
Stephan Schiller, Jean-Philippe Karr
The proton, deuteron and triton masses can be determined relative to the electron mass via rovibrational spectroscopy of molecular hydrogen ions. This has to occur via comparison o…
Positron accumulation in the GBAR experiment
P. Blumer, M. Charlton, M. Chung +67
We present a description of the GBAR positron (e+) trapping apparatus, which consists of a three stage Buffer Gas Trap (BGT) followed by a High Field Penning Trap (HFT), and discus…
Proton-Electron Mass Ratio from Laser Spectroscopy of HD at the Part-Per-Trillion Level
Sayan Patra, M. Germann, J. -Ph. Karr +7
Accepted values of the masses of several subatomic particles have been under debate since recent measurements in Penning traps produced more precise yet incompatible results, imply…
Positron production using a 9 MeV electron linac for the GBAR experiment
M. Charlton, J. J. Choi, M. Chung +67
For the GBAR (Gravitational Behaviour of Antihydrogen at Rest) experiment at CERN's Antiproton Decelerator (AD) facility we have constructed a source of slow positrons, which uses…
Proton-electron mass ratio from HD revisited
Sayan Patra, J. -Ph. Karr, L. Hilico +3
We present a new derivation of the proton-electron mass ratio from the hydrogen molecular ion, HD. The derivation entails the adjustment of the mass ratio in highly precise the…
Fundamental transitions and ionization energies of the hydrogen molecular ions at the few ppt level
Vladimir I. Korobov, Laurent Hilico, Jean-Philippe Karr
We calculate ionization energies and fundamental vibrational transitions for H, D, and HD molecular ions. The NRQED expansion for the energy in terms of the fine st…
High-precision spectroscopy of the HD+ molecule at the 1-p.p.b. level
J. Biesheuvel, J. -Ph. Karr, L. Hilico +3
Recently we reported a high precision optical frequency measurement of the (v,L):(0,2)->(8,3) vibrational overtone transition in trapped deuterated molecular hydrogen (HD+) ions at…
Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD+
J. Biesheuvel, J. -Ph. Karr, L. Hilico +3
The simplest molecules in nature, molecular hydrogen ions in the form of H2+ and HD+, provide an important benchmark system for tests of quantum electrodynamics in complex forms of…
Test of the theoretical hyperfine structure of the molecular hydrogen ion at the 1-ppm level
Vladimir I. Korobov, Jeroen C. J. Koelemeij, Laurent Hilico +1
We revisit the order corrections to the hyperfine splitting in the H ion, and find a hitherto unrecognized second-order relativistic contribution associated wit…
One-loop vacuum polarization at order for the two center problem
J. -Ph. Karr, L. Hilico, V. I. Korobov
We present calculations of the one-loop vacuum polarization contribution (Uehling potential) for the two-center problem in the NRQED formalism. The cases of hydrogen molecular ions…
Relativistic corrections of mα^6(m/M) order to the hyperfine structure of the H_2^+ molecular ion
V. I. Korobov, L. Hilico, J. -Ph. Karr
The mα^6(m/M) order corrections to the hyperfine splitting in the H_2^+ ion are calculated. That allows to reduce uncertainty in the frequency intervals between hyperfine sublevels…
Optical bistability in semiconductor microcavities in the nondegenerate parametric oscillation regime: analogy with the optical parametric oscillator
A. Baas, J. -Ph. Karr, M. Romanelli +2
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 cycle of the nonlinear emi…