Search for the electric dipole moment (EDM) of the electron

ThO (ACME Collaboration)

  • High-sensitivity low-noise photodetector using a large-area silicon photomultiplier.
    T. Masuda, A. Hiramoto, D. G. Ang, C. Meisenhelder, C. D. Panda, N. Sasao, S. Uetake, X. Wu, D. DeMille, J. M. Doyle, G. Gabrielse, and K. Yoshimura
    Opt.  Express  31,  1943-1957  (2023)
  • Measurement of the H3Δ1 Radiative Lifetime ThO.
    D. G. Ang, C. Meisenhelder, C. D. Panda, X. Wu, D. DeMille, J. M. Doyle, and G. Gabrielse.
    Phys. Rev. A 106, 022808 (2022)
  • Suppression of the optical crosstalk in a multi-channel silicon photomultiplier array
    T. Masuda, D. G. Ang, N. R. Hutzler, C. Meisenhelder, N. Sasao, S. Uetake, X. Wu, D. DeMille, G. Gabrielse, J. M. Doyle, and K. Yoshimura.
    Opt. Express 29, 16914-16926 (2021).
  • The metastable Q 3Δ2 state of ThO: A new resource for the ACME electron EDM search.
    X. Wu, Z. Han, J. Chow, D.G. Ang, C. Meisenhelder, C.D. Panda, E.P. West, G. Gabrielse, J.M. Doyle, and D. DeMille.
    New J. Phys 22, 023013 (2020).
  • Attaining the shot-noise-limit in the ACME measurement of the electron electric dipole moment.
    C.D. Panda, C. Meisenhelder, M. Verma, D.G. Ang, J. Chow, Z. Lasner, X. Wu, D.P. DeMille, J.M. Doyle, and G. Gabrielse.
    J. Phys. B 52, 235003 (2019).
  • Improved limit on the electric dipole moment of the electron. 
    ACME Collaboration (V. Andreev, D. G. Ang, D. DeMille, J. M. Doyle, G. Gabrielse, J. Haefner, N. R. Hutzler, Z. Lasner, C. Meisenhelder, B. R. O’Leary, C. D. Panda, A. D. West, E. P. West, and X. Wu).
    Nature 562, 355 (2018).
  • Statistical sensitivity of phase measurements via laser-induced fluorescence with optical cycling detection.
    Z. Lasner and D. DeMille.
    Phys. Rev. A 98, 053823 (2018).
  • Methods, Analysis, and the Treatment of Systematic Errors for the Electron Electric Dipole Moment Search in Thorium Monoxide.
    J. Baron, W.C. Campbell, D. DeMille3, J.M. Doyle1, G. Gabrielse1, Y.V. Gurevich4, P.W. Hess5, N.R. Hutzler1, E. Kirilov6, I. Kozyryev1, B.R. O’Leary3, C.D. Panda1, M.F. Parsons1, B. Spaun7, A.C. Vutha8, A.D. West, and E.P. West1 (ACME Collaboration). New J. Phys. 19, 073029 (2017).
  • Stimulated Raman adiabatic passage preparation of a coherent superposition of ThO H 3Δ1 states for an improved electron electric-dipole-moment measurement.
    C. D. Panda, B. R. O’Leary, A. D. West, J. Baron, P. W. Hess, C. Hoffman, E. Kirilov, C. B. Overstreet, E. P. West, D. DeMille, J. M. Doyle, and G. Gabrielse.
    Phys. Rev. A 93, 052110 (2016).​
  • Characterization of the I (|Ω|=1) – X 1Σ+ (0,0) band of thorium oxide.
    D. L. Kokkin, T. C. Steimle, and D. DeMille.
    Phys. Rev. A 91, 042508 (2015).​
  • Branching ratios and radiative lifetimes of the UL, and states of thorium oxide.
    D. L. Kokkin, T. C. Steimle, and D. DeMille.
    Phys. Rev. A 90, 062503 (2014).
  • Zeeman interaction in ThO H 3Δ1 for the electron EDM search.
    A.N. Petrov, L.V. Skripnikov, A.V. Titov, N.R. Hutzler, P.W. Hess, B.R. O’Leary, B. Spaun, D. DeMille, G. Gabrielse, and J.M. Doyle.
    Phys. Rev. A 89, 062505 (2014).
  • Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron.
    The ACME Collaboration, J. Baron et al.
    Science 343, 269 (2014).
  • Shot-noise-limited spin measurements in a pulsed molecular beam.
    E. Kirilov, W. C. Campbell, J. M. Doyle, G. Gabrielse, Y. V. Gurevich, P. W. Hess, N. R. Hutzler, B. R. O’Leary, E. Petrik, B. Spaun, A. C. Vutha, and D. DeMille.
    Phys. Rev. A 88, 013844 (2013).
  • Magnetic and electric dipole moments of the H 3Δ1 state in ThO.
    A. C. Vutha, B. Spaun, Y. V. Gurevich, N. R. Hutzler, E. Kirilov, J. M. Doyle, G. Gabrielse, and D. DeMille.
    Phys. Rev. A 84, 034502 (2011).
  • A cryogenic beam of refractory, chemically reactive molecules with expansion cooling.
    N. R. Hutzler, M. F. Parsons, Y. V. Gurevich, P. W. Hess, E. Petrik, B. Spaun, A. C. Vutha, D. DeMille, G. Gabrielse, and J. M. Doyle.
    Phys. Chem. Chem. Phys. 13, 18976-18985 (2011).
  • Search for the electric dipole moment of the electron with thorium monoxide.
    A. C. Vutha, W. C. Campbell, Y. V. Gurevich, N. R. Hutzler, M. Parsons, D. Patterson, E. Petrik, B. Spaun, J. M. Doyle, G. Gabrielse, and D. DeMille.
    J. Phys. B: At. Mol. Opt. Phys. 43, 074007 (2010).

PbO

  • Search for the electron electric dipole moment using Ω-doublet levels in PbO.
    S. Eckel, P. Hamilton, E. Kirilov, H. W. Smith, and D. DeMille.
    Phys. Rev. A 87, 052130 (2013).
  • Preparation and detection of states with simultaneous spin alignment and molecular orientation in PbO.
    S. Bickman, P. Hamilton, Y. Jiang, D. DeMille.
    Phys Rev. A 80, 023418 (2009).
  • P,T-parity violation effects in polar heavy-atom molecules. 
    A. V. Titov, N. S. Mosyagin, A. N. Petrov, T. A. Isaev, and D. DeMille.
    Recent Advances in the Theory of Chemical and Physical Systems, Progress in Theoretical Chemistry and Physics, Volume 15, II, 253-283 (2006).
  • Large-Area, Low-Noise, High Speed, Photodiode-Based Fluorescence Detectors with Fast Overdrive Recovery.
    S. Bickman and D. DeMille.
    Rev. Sci. Instrum. 76, 113101 (2005).
  • Stark-modulation spectroscopy of the B(1) [3Π] state of PbO.
    D. Kawall, Y. Gurevich, C. Cheung, S. Bickman, Y. Jiang, and D. DeMille.
    Phys Rev. A 72, 064501 (2005).
  • Configuration interaction calculation of hyperfine and P,T-odd constants on 207PbO excited states for electron electric-dipole-moment experiments.
    A. N. Petrov, A. V. Titov, T. A. Isaev, N. S. Mosyagin, and D. DeMille.
    Phys. Rev. A 72, 022505 (2005).
  • Precision Zeeman-Stark spectroscopy of the metastable a(1) [3Σ+] state of PbO.
    D. Kawall, F. Bay, S. Bickman, Y. Jiang and D. DeMille.
    Phys. Rev. Lett. 92, 133007 (2004).
  • Enhancement of the electric dipole moment of the electron in PbO.
    M. Kozlov and D. DeMille.
    Phys. Rev. Lett. 89, 133001 (2002).
  • Detailed spectroscopy of the a(1) [3Σ+] state of PbO.
    L. R. Hunter, S. E. Maxwell, K. A. Ulmer, N. D. Charney, S. K. Peck, D. Krause, Jr., S. Ter-Avetisyan, and D. DeMille.
    Phys. Rev. A 65, 030501 (2002).
  • Search for the Electric Dipole Moment of the Electron Using Metastable PbO.
    D. DeMille, F. Bay, S. Bickman, D. Kawall, L. Hunter, D. Krause, Jr., S. Maxwell, and K. Ulmer.
    Art and Symmetry in Experimental Physics: Festschrift for Eugene Commins, ed. D. Budker, P. Bucksbaum, and S. Freedman, AIP Conf. Pub., 2001.
  • Investigation of PbO as a system for measuring the electric dipole moment of the electron.
    D. DeMille, F. Bay, S. Bickman, D. Kawall, D. Krause, Jr., S. E. Maxwell, and L. R. Hunter.
    Phys. Rev. A 61, 052507 (2000).