J. Karr

C. J. Baker, F. Schmidt-Kaler, B. Mansoulié, 2022, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.

Precision spectroscopy of molecular hydrogen ions : Towards frequency metrology of particle masses

S. Schiller, J. Karr, S. Schiller, 2006, physics/0612106.

"Structure"-function relationships in eukaryotic transcription factors: The role of intrinsically disordered regions in gene regulation.

R. Tjian, X. Darzacq, J. Karr, 2022, Molecular cell.

Polariton squeezing in semiconductor microcavities

R. Houdré, E. Giacobino, J. Karr, 2003, 2003 European Quantum Electronics Conference. EQEC 2003 (IEEE Cat No.03TH8665).

Theoretical progress in the H2 molecular ion: towards electron to proton mass ratio determination 1

J. Karr, L. Hilico, V. Korobov, 2011 .

Three-body QED test and fifth-force constraint from vibrations and rotations of HD+

K. Eikema, W. Ubachs, M. Germann, 2021, Physical Review Research.

Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD+

K. Eikema, W. Ubachs, J. Karr, 2016, Nature Communications.

High-precision spectroscopy of the HD+ molecule at the 1-p.p.b. level

K. Eikema, W. Ubachs, J. Karr, 2016, 1608.08976.

Energy levels and two-photon transition probabilities in the HD+ ion

J. Karr, L. Hilico, S. Kilic, 2005 .

Fundamental Transitions and Ionization Energies of the Hydrogen Molecular Ions with Few ppt Uncertainty.

J. Karr, L. Hilico, V. Korobov, 2017, Physical review letters.

Squeezed states and the quantum noise of light in semiconductor microcavities

Elisabeth Giacobino, Hichem Eleuch, E. Giacobino, 1999 .

Proton-electron mass ratio from laser spectroscopy of HD+ at the part-per-trillion level

K. Eikema, W. Ubachs, M. Haidar, 2020, Science.

Proton–electron mass ratio from HD+ revisited

M. Germann, J. Karr, J. Koelemeij, 2017, 1710.11537.

High-accuracy calculations in the H+2 molecular ion: towards a measurement of mp/me

J. Karr, T. Valenzuela, A. Douillet, 2007 .

High accuracy results for the energy levels of the molecular ions H+2, D+2 and HD+, up to J = 2

J. Karr, L. Hilico, 2006, quant-ph/0701139.

Theoretical transition frequencies beyond 0.1 ppb accuracy in H2+ , HD+ , and antiprotonic helium

J. Karr, L. Hilico, V. Korobov, 2013, 1312.3728.

Relativistic corrections ofmα6(m∕M)order to the hyperfine structure of theH2+molecular ion

J. Karr, L. Hilico, V. Korobov, 2008, 0811.0516.

Precision measurements with non-laser-cooled trapped ions

J. Karr, 2009 .

Interference of coherent polariton beams in microcavities: polarization-controlled optical gates.

M. Romanelli, I. Shelykh, A. Kavokin, 2007, Physical review letters.

Squeezing in semiconductor microcavities in the strong-coupling regime

R. Houdré, E. Giacobino, J. Karr, 2004 .

Hyperfine structure in the hydrogen molecular ion

J. Karr, L. Hilico, V. Korobov, 2006 .

Theoretical Hyperfine Structure of the Molecular Hydrogen Ion at the 1 ppm Level.

J. Karr, J. Koelemeij, L. Hilico, 2015, Physical review letters.

ATMOSPHERIC AMMONIA IN NORTH CAROLINA: A RESEARCH SUMMARY

H. Paerl, D. Whitall, J. Karr, 2000 .

Nonrelativistic QED approach to the fine- and hyperfine-structure corrections of order mα6 and mα6(m/M) : Application to the hydrogen atom

M. Haidar, J. Karr, J. Karr, 2019, Physical Review A.

Positron production using a 9 MeV electron linac for the GBAR experiment

F. Schmidt-Kaler, B. Mansoulié, G. Mornacchi, 2020, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.