John M. Doyle
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View article: High-sensitivity molecular spectroscopy of SrOH using magneto-optical trapping
High-sensitivity molecular spectroscopy of SrOH using magneto-optical trapping Open
Polyatomic molecules are projected to be powerful tools in searches for physics beyond the Standard Model (BSM), including new CP-violating (CPV) interactions and ultralight dark matter (UDM) particles. Certain degrees of freedom present i…
View article: Optical Trapping of SrOH Molecules for Dark Matter and T-violation Searches
Optical Trapping of SrOH Molecules for Dark Matter and T-violation Searches Open
We report an optical dipole trap of strontium monohydroxide (SrOH) with 1400(300) trapped molecules. Through optical pumping, we access vibrational states that are proposed for improved probes of the electron's electric dipole moment (eEDM…
View article: Control of Dipolar Dynamics by Geometrical Programming
Control of Dipolar Dynamics by Geometrical Programming Open
We propose and theoretically analyze methods for quantum many-body control through geometric reshaping of molecular tweezer arrays. Dynamic rearrangement during entanglement is readily available due to the extended coherence times of molec…
View article: A cryogenic buffer gas beam source with in-situ ablation target replacement
A cryogenic buffer gas beam source with in-situ ablation target replacement Open
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 uses this source to produce a beam of cold, slow thorium mo…
View article: Quantum-State-Controlled Collisions of Ultracold Polyatomic Molecules
Quantum-State-Controlled Collisions of Ultracold Polyatomic Molecules Open
Collisions between ultracold calcium monohydroxide (CaOH) molecules are realized and studied. Inelastic collision rate constants are measured for CaOH prepared in ground and excited vibrational states, and the electric field dependence of …
View article: Conveyor-belt magneto-optical trapping of molecules
Conveyor-belt magneto-optical trapping of molecules Open
Laser cooling is used to produce ultracold atoms and molecules for quantum science and precision measurement applications. Molecules are more challenging to cool than atoms due to their vibrational and rotational internal degrees of freedo…
View article: Analog Selection and Project Comparison Using Offshore Carbon Storage Project Inventory and Data
Analog Selection and Project Comparison Using Offshore Carbon Storage Project Inventory and Data Open
Presentation for CCUS 2025 Conference held in Houston, Texas March 3-5, 2025. Offshore geologic carbon storage (GCS) efforts are accelerating worldwide. As additional projects come online and site characterizations take place, project info…
View article: Offshore Geologic Carbon Storage Inventory Dashboard
Offshore Geologic Carbon Storage Inventory Dashboard Open
The Offshore Geologic Carbon Storage Inventory Dashboard is an interactive dashboard. The dashboard showcases the Offshore Geologic Carbon Storage (GCS) Inventory. It is intended to be used for research and comparison purposes, see full di…
View article: Conveyor-belt magneto-optical trapping of molecules
Conveyor-belt magneto-optical trapping of molecules Open
Laser cooling is used to produce ultracold atoms and molecules for quantum science and precision measurement applications. Molecules are more challenging to cool than atoms due to their vibrational and rotational internal degrees of freedo…
View article: A conveyor-belt magneto-optical trap of CaF
A conveyor-belt magneto-optical trap of CaF Open
We report the experimental realization of a conveyor-belt magneto-optical trap for calcium monofluoride (CaF) molecules. The obtained highly-compressed cloud has a mean radius of 64(5) $μ$m and a peak number density of $3.6(5) \times 10^{1…
View article: Magneto-optical trapping of a heavy polyatomic molecule for precision measurement
Magneto-optical trapping of a heavy polyatomic molecule for precision measurement Open
We report a magneto-optical trap of strontium monohydroxide (SrOH) containing 2000(600) molecules at a temperature of 1.2(3) mK. The lifetime is 91(9) ms, which is limited by decay to optically unaddressed vibrational states. This provides…
View article: Thermal Emission of Strontium in a Cryogenic Buffer Gas Beam Source
Thermal Emission of Strontium in a Cryogenic Buffer Gas Beam Source Open
We demonstrate production of cold atomic strontium (Sr) and strontium-containing molecules (SrOH) in a cryogenic buffer gas beam source via direct heating of strontium oxide (SrO) with 30 mJ laser pulses several milliseconds long. $3.7(2)\…
View article: Raman Sideband Cooling of Molecules in an Optical Tweezer Array to the 3D Motional Ground State
Raman Sideband Cooling of Molecules in an Optical Tweezer Array to the 3D Motional Ground State Open
Ultracold polar molecules are promising for quantum information processing and searches for physics beyond the standard model. Laser cooling to ultracold temperatures is an established technique for trapped diatomic and triatomic molecules…
View article: Relativistic Exact Two-Component Coupled-Cluster Study of Molecular Sensitivity Factors for Nuclear Schiff Moments
Relativistic Exact Two-Component Coupled-Cluster Study of Molecular Sensitivity Factors for Nuclear Schiff Moments Open
Relativistic exact two-component coupled-cluster calculations of molecular sensitivity factors for nuclear Schiff moments (NSMs) are reported. We focus on molecules containing heavy nuclei, especially octupole-deformed nuclei. Analytic rel…
View article: Vibrational Branching Ratios for Laser-Cooling of Nonlinear Strontium-Containing Molecules
Vibrational Branching Ratios for Laser-Cooling of Nonlinear Strontium-Containing Molecules Open
The vibrational branching ratios from the lowest excited electronic state for $\textrm{SrOCH}_3$, $\textrm{SrNH}_2$, and $\textrm{SrSH}$ are measured at the $< 0.1\%$ level. Spectra are obtained by driving the $\tilde{X} - \tilde{A}$ trans…
View article: High Compression Blue-Detuned Magneto-Optical Trap of Polyatomic Molecules
High Compression Blue-Detuned Magneto-Optical Trap of Polyatomic Molecules Open
We demonstrate a blue-detuned magneto-optical trap (MOT) of a polyatomic molecule, calcium monohydroxide (CaOH). We identify a novel MOT frequency configuration that produces high spatial compression of the molecular cloud. This high compr…
View article: An optical tweezer array of ultracold polyatomic molecules
An optical tweezer array of ultracold polyatomic molecules Open
Polyatomic molecules have rich structural features that make them uniquely suited to applications in quantum information science, quantum simulation, ultracold chemistry, and searches for physics beyond the Standard Model. However, a key c…
View article: Data for Dipolar spin-exchange and entanglement between molecules in an optical tweezer array
Data for Dipolar spin-exchange and entanglement between molecules in an optical tweezer array Open
Data for Dipolar spin-exchange and entanglement between molecules in an optical tweezer array
View article: Data for Dipolar spin-exchange and entanglement between molecules in an optical tweezer array
Data for Dipolar spin-exchange and entanglement between molecules in an optical tweezer array Open
Data for Dipolar spin-exchange and entanglement between molecules in an optical tweezer array
View article: Raman sideband cooling of molecules in an optical tweezer array to the 3-D motional ground state
Raman sideband cooling of molecules in an optical tweezer array to the 3-D motional ground state Open
Ultracold polar molecules are promising for quantum information processing and searches for physics beyond the Standard Model. Laser cooling to ultracold temperatures is an established technique for trapped diatomic and triatomic molecules…
View article: Data for Quantum Control of Trapped Polyatomic Molecules for eEDM Searches
Data for Quantum Control of Trapped Polyatomic Molecules for eEDM Searches Open
Data for Quantum Control of Trapped Polyatomic Molecules for eEDM Searches
View article: Data for Quantum Control of Trapped Polyatomic Molecules for eEDM Searches
Data for Quantum Control of Trapped Polyatomic Molecules for eEDM Searches Open
Data for Quantum Control of Trapped Polyatomic Molecules for eEDM Searches
View article: Data for Quantum Control of Trapped Polyatomic Molecules for eEDM Searches
Data for Quantum Control of Trapped Polyatomic Molecules for eEDM Searches Open
Data for Quantum Control of Trapped Polyatomic Molecules for eEDM Searches
View article: Blackbody thermalization and vibrational lifetimes of trapped polyatomic molecules
Blackbody thermalization and vibrational lifetimes of trapped polyatomic molecules Open
We study the internal state dynamics of optically trapped polyatomic molecules subject to room temperature blackbody radiation. Using rate equations that account for radiative decay and blackbody excitation between rovibrational levels of …
View article: Direct Laser Cooling of Polyatomic Molecules
Direct Laser Cooling of Polyatomic Molecules Open
Over the past decade, tremendous progress has been made to extend the tools of laser cooling and trapping to molecules. Those same tools have recently been applied to polyatomic molecules (molecules containing three or more atoms). In this…
View article: Buffer gas cooling and mixture analysis
Buffer gas cooling and mixture analysis Open
An apparatus for spectroscopy of a gas mixture is described. Such an apparatus includes a gas mixing system configured to mix a hot analyte gas that includes at least one analyte species in a gas phase into a cold buffer gas, thereby formi…
View article: Quantum Control of Trapped Polyatomic Molecules for eEDM Searches
Quantum Control of Trapped Polyatomic Molecules for eEDM Searches Open
Ultracold polyatomic molecules are promising candidates for experiments in quantum science, quantum sensing, ultracold chemistry, and precision measurements of physics beyond the Standard Model. A key, yet unrealized, requirement of these …
View article: Molecules Functionalized with Cycling Centers for Quantum Information Science
Molecules Functionalized with Cycling Centers for Quantum Information Science Open
The ability for a single molecule to produce enough laser-induced fluorescence to control and detect its quantum state is known as optical cycling. This property has been used to great effect in atoms, where the relatively small number of …
View article: High-sensitivity low-noise photodetector using a large-area silicon photomultiplier
High-sensitivity low-noise photodetector using a large-area silicon photomultiplier Open
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 comparison to a conventional photomultiplier tube (PMT). SiPMs …