Abstract Polyatomic molecules have been identified as sensitive probes of charge-parity violating and parity physics beyond the Standard Model (BSM). For example, many linear triatomic are both laser-coolable doublets in ground electronic <?CDATA $\tilde{X} {}^2\Sigma^+ (010)$?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mover> <mml:mi>X</mml:mi> <mml:mo stretchy="false">˜</mml:mo> </mml:mover> <mml:msup> <mml:mrow /> <mml:mn>2</mml:mn> </mml:msup>...

We use narrow-band laser excitation of Yb to substantially enhance the brightness a cold beam YbOH, polyatomic molecule with high sensitivity physics beyond Standard Model (BSM). By exciting atomic metastable $^3$P$_1$ state in cryogenic environment, we significantly increase chemical reaction cross-section for collisions reactants. characterize dependence enhancement on properties light, and study final distribution YbOH products. The resulting bright, can be used statistical searches new...

Increased background pressure in vacuum chamber test facilities as compared to on-orbit operation has been shown influence the of electric propulsion devices such Hall thrusters. This study aims elucidate impact on ionization and acceleration mechanisms a stationary plasma thruster, model SPT-100 using time-averaged time-resolved laser-induced fluorescence velocimetry. The results are for thruster operating at an applied 300 V , with facility pressures ranging from . Time-averaged...

The odd isotopologues of ytterbium monohydroxide, $^{171,173}$YbOH, have been identified as promising molecules in which to measure parity (P) and time reversal (T) violating physics. Here we characterize the $\tilde{A}^{2}\Pi_{1/2}(0,0,0)-\tilde{X}^2\Sigma^+(0,0,0)$ band near 577 nm for these isotopologues. Both laser-induced fluorescence (LIF) excitation spectra a supersonic molecular beam sample absorption cryogenic buffer-gas cooled were recorded. Additionally, novel spectroscopic...

We report measured and calculated values of radiative decay rates vibrational branching fractions for the $A{\phantom{\rule{0.16em}{0ex}}}^{2}\mathrm{\ensuremath{\Pi}}(v=0)$ state $^{24}\mathrm{Mg}^{19}\mathrm{F}$. The rate measurements use time-correlated single-photon counting with roughly 1% total uncertainty. Branching-fraction are performed using two calibrated imaging systems to achieve few percent multireference relativistic ab initio methods calculate Franck-Condon factors transition...

The authors present a theoretical analysis of frequency-chirped molecular magneto-optical trap (MOT) that may open the way for efficient cooling class light molecules. They show this approach can increase capture velocity MOT which could be used to more molecules from typical sources and, in some cases, perhaps remove need laser slowing before MOT.

We measure the complete set of transition frequencies necessary to laser cool and trap MgF molecules. Specifically, we report frequency multiple low-$J$ transitions $X{\phantom{\rule{0.16em}{0ex}}}^{2}{\mathrm{\ensuremath{\Sigma}}}^{+}({v}^{\ensuremath{''}}=0,1)\ensuremath{\rightarrow}A{\phantom{\rule{0.16em}{0ex}}}^{2}{\mathrm{\ensuremath{\Pi}}}_{1/2}({v}^{\ensuremath{'}}=0)$,...

The authors demonstrate a method for high-resolution spectroscopy of excited vibrational states molecules without the need optical cycling, and apply it to measure A(100) - X(300) band in YbOH. method, whose sensitivity could be further improved, should have broad utility molecular laser cooling, applications that make use such as searches fundamental symmetry violations, ultralight dark matter, etc.

We measure the complete set of transition frequencies necessary to laser cool and trap MgF molecules. Specifically, we report frequency multiple low $J$ transitions $X^2\Sigma^+(v^{\prime\prime}=0,1) \rightarrow A^2\Pi_{1/2}(v^\prime=0)$, $X^2\Sigma^+(v^{\prime\prime}=1,2) A^2\Pi_{1/2}(v^\prime=1)$, $X^2\Sigma^+(v^{\prime\prime}=1) B^2\Sigma^+(v^{\prime}=0)$ bands MgF. The measured $X^2\Sigma^+(v^{\prime\prime}=1)\rightarrow B^2\Sigma^+(v^\prime=0)$ spectrum allowed spin-rotation hyperfine...

We simulate the capture process of MgF molecules into a frequency-chirped molecular MOT. Our calculations show that by chirping frequency, MOT velocity is increased about factor 4 to 80 m/s, allowing for direct loading from two-stage cryogenic buffer gas beam source. Moreover, we effect this frequency chirp already present in find should be stable with little no molecule loss. The chirped thus allow multiple pulses increase number trapped

Ytterbium monofluoride, YbF, has long been used as a venue in attempts to measure the electron electric dipole moment (eEDM) bc .In addition molecular EDM resulting from eEDM contribution, 173 Yb(16.1%,I=5/2) isotopic form of Yb-containing molecules are also expected have an caused by interaction nuclear magnetic quadrupole (NMQM) d with electrons.As pointed out Kozyryev and Hutzler e , certain energy levels Ybpolyatomic (e.g.YbOH, YbCCH, YbCH 3 YbOCH ) exhibit enhanced sensitivity for...

An Ising-inspired numerical model is developed to study spontaneous quantum teleportation in a quenched spin lattice. Quantum an operation that can, using entangled pairs of particles, transport state across arbitrary distances with high fidelity. In doing so, it destroys the one location and relocates another. this context, serves as long range interaction randomly introduces correlations disorder into addition, different Bell projection pair swapping models are also explored, effects...

Polyatomic molecules have been identified as sensitive probes of charge-parity violating and parity-violating physics beyond the Standard Model (BSM). For example, many linear triatomic are both laser-coolable parity doublets in ground electronic $\tilde{X} {}^2Σ^+ (010)$ state arising from bending vibration, features that can greatly aid BSM searches. Understanding is a crucial prerequisite to precision measurements with polyatomic molecules. Here, we characterize fundamental vibration...

Molecular laser cooling and trapping requires addressing all spontaneous decays to excited vibrational states that occur at the $\gtrsim 10^{-4} - 10^{-5}$ level, which is accomplished by driving repumping transitions out of these states. However, must first be identified spectroscopically high-resolution. A typical approach prepare molecules in via optical cycling pumping, multiple high-power lasers. Here, we demonstrate a general method perform this spectroscopy without need for cycling....

We report measured and calculated values of radiative decay rates vibrational branching fractions for the A$^2Π$ state MgF. The rate measurements use time-correlated single photon counting with roughly 1% total uncertainty. Branching-fraction are performed using two calibrated imaging systems to achieve few percent highly accurate multireference relativistic ab initio methods calculate Franck-Condon factors transition dipole moments required determine fractions. provide a precision benchmark...

Ytterbium monofluoride, YbF, has long been used as a venue in attempts to measure the electron electric dipole moment (eEDM) 1-2 .In addition molecular EDM resulting from eEDM contribution, 173 Yb (16.1%, I=5/2) isotopic form of Yb-containing molecules are also expected have an caused by interaction nuclear magnetic quadrupole (NMQM) 3 with electrons.As pointed out Kozyryev and Hutzler 4 , X 2 Σ + (01 1 0) level YbOH is exhibit enhanced sensitivity for measurements, relative largely due ease...