Publications (23)
Measurement of the H Radiative Lifetime in ThO
Daniel G. Ang, Cole Meisenhelder, Cristian D. Panda +4
The best limit on the electron electric dipole moment (eEDM) comes from the ACME II experiment [Nature \textbf{562} (2018), 355-360] which probes physics beyond the Standard Model…
Simple Self-calibrating Polarimeter for Measuring the Stokes Parameters of Light
Vitaly Wirthl, Cristian D. Panda, Paul W. Hess +1
A simple, self-calibrating, rotating-waveplate polarimeter is largely insensitive to light intensity fluctuations and is shown to be useful for determining the Stokes parameters of…
Measured Lepton Magnetic Moments
Gerald Gabrielse, Graziano Venanzoni
The electron and muon magnetic moments have played, and continue to play, important roles in testing the fundamental mathematical description of physical reality called the Standar…
A cryogenic buffer gas beam source with in-situ ablation target replacement
Zhen Han, Zack Lasner, Collin Diver +11
The design and performance of a cryogenic buffer gas beam (CBGB) source with a load-lock system is presented. The ACME III electron electric dipole moment (eEDM) search experiment…
Electric dipole moments and the search for new physics
Ricardo Alarcon, Jim Alexander, Vassilis Anastassopoulos +140
Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well beyond those reached directly at high energy colliders. Discrim…
Search for the electric dipole moment of the electron with thorium monoxide
Amar C. Vutha, Wesley C. Campbell, Yulia V. Gurevich +8
The electric dipole moment of the electron (eEDM) is a signature of CP-violating physics beyond the Standard Model. We describe an ongoing experiment to measure or set improved lim…
Demonstration that Differential Length Changes of Optical Cavities are a Sensitive Probe for Ultralight Dark Matter
Tejas Deshpande, Andra Ionescu, Nicholas Miller +4
Measurements of differential length oscillations of Fabry-Perot cavities provide a sensitive and promising approach to searching for scalar ultralight dark matter (ULDM). The initi…
Driven One-Particle Quantum Cyclotron
Xing Fan, Gerald Gabrielse
A quantum cyclotron is one trapped electron or positron that occupies only its lowest cyclotron and spin states. A master equation is solved for a driven quantum cyclotron with a Q…
A cryogenic beam of refractory, chemically reactive molecules with expansion cooling
Nicholas R. Hutzler, Maxwell Parsons, Yulia V. Gurevich +7
Cryogenically cooled buffer gas beam sources of the molecule thorium monoxide (ThO) are optimized and characterized. Both helium and neon buffer gas sources are shown to produce Th…
Methods, Analysis, and the Treatment of Systematic Errors for the Electron Electric Dipole Moment Search in Thorium Monoxide
ACME Collaboration, Jacob Baron, Wes C. Campbell +15
We recently set a new limit on the electric dipole moment of the electron (eEDM) (J. Baron et al., ACME collaboration, Science 343 (2014), 269-272), which represented an order-of-m…
One-Electron Quantum Cyclotron as a Milli-eV Dark-Photon Detector
Xing Fan, Gerald Gabrielse, Peter W. Graham +6
We propose using trapped electrons as high- resonators for detecting meV dark photon dark matter. When the rest energy of the dark photon matches the energy splitting of the two…
Electrostatic focusing of cold and heavy molecules for the ACME electron EDM search
Xing Wu, Peiran Hu, Zhen Han +5
The current best upper limit for electron electric dipole moment (EDM), ecm (% confidence), was set by the ACME collaboration in 2018. The ACM…
Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
ACME Collaboration, Jacob Baron, Wesley C. Campbell +15
The Standard Model (SM) of particle physics fails to explain dark matter and why matter survived annihilation with antimatter following the Big Bang. Extensions to the SM, such as…
Magnetic and electric dipole moments of the state in ThO
Amar C. Vutha, Benjamin Spaun, Yulia V. Gurevich +5
The metastable state in the thorium monoxide (ThO) molecule is highly sensitive to the presence of a CP-violating permanent electric dipole moment of the electron (e…
Suppression of the optical crosstalk in a multi-channel silicon photomultiplier array
Takahiko Masuda, Daniel G. Ang, Nicholas R. Hutzler +8
We propose and study a method of optical crosstalk suppression for silicon photomultipliers (SiPMs) using optical filters. We demonstrate that attaching absorptive visible bandpass…
Highly Excited Electron Cyclotron for QCD Axion and Dark-Photon Detection
Xing Fan, Gerald Gabrielse, Peter W. Graham +3
We propose using highly excited cyclotron states of a trapped electron to detect meV axion and dark photon dark matter, marking a significant improvement over our previous proposal…
An Underappreciated Radiation Hazard from High Voltage Electrodes in Vacuum
Adam West, Zack Lasner, David DeMille +6
The use of high voltage (HV) electrodes in vacuum is commonplace in physics laboratories. In such systems, it has long been known that electron emission from an HV cathode can lead…
Roadmap on STIRAP applications
Klaas Bergmann, Hanns-Christoph Nägerl, Cristian Panda +31
STIRAP (Stimulated Raman Adiabatic Passage) is a powerful laser-based method, usually involving two photons, for efficient and selective transfer of population between quantum stat…
Quantum Sensing for High Energy Physics
Zeeshan Ahmed, Yuri Alexeev, Giorgio Apollinari +113
Report of the first workshop to identify approaches and techniques in the domain of quantum sensing that can be utilized by future High Energy Physics applications to further the s…
High-sensitivity low-noise photodetector using large-area silicon photomultiplier
Takahiko Masuda, Ayami Hiramoto, Daniel G. Ang +9
The application of silicon photomultiplier (SiPM) technology for weak-light detection at a single photon level has expanded thanks to its better photon detection efficiency in comp…
Circumventing Detector Backaction on a Quantum Cyclotron
Xing Fan, Gerald Gabrielse
Detector backaction can be completely evaded when the state of a one-electron quantum cyclotron is detected, but it nonetheless significantly broadens the quantum-jump resonance li…
Advanced Cold Molecule Electron EDM
ACME Collaboration, Wesley C. Campbell, Cheong Chan +11
Measurement of a non-zero electric dipole moment (EDM) of the electron within a few orders of magnitude of the current best limit of |d_e| < 1.05 e -27 e cm would be an indication…
The metastable Q state of ThO: A new resource for the ACME electron EDM search
Xing Wu, Zhen Han, James Chow +7
The best upper limit for the electron electric dipole moment was recently set by the ACME collaboration. This experiment measures an electron spin-precession in a cold beam of ThO…