Laser Cooling Scheme for the Carbon Dimer ($^{12}$C$_2$)

• URL: http://arxiv.org/abs/2112.10745v1
• Date: Mon, 20 Dec 2021 18:49:32 GMT
• Title: Laser Cooling Scheme for the Carbon Dimer ($^{12}$C$_2$)
• Authors: Niccol\`o Bigagli, Daniel W. Savin, Sebastian Will
• Abstract summary: We have calculated the branching ratios for cycling and repumping transitions and calculated the number of photon scatterings required to achieve deflection and laser cooling of a beam of $C$ molecules. This work opens up a path to cooling of molecules with carbon-carbon bonds and may pave the way toward quantum control of organic molecules.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We report on a scheme for laser cooling of $^{12}$C$_2$. We have calculated the branching ratios for cycling and repumping transitions and calculated the number of photon scatterings required to achieve deflection and laser cooling of a beam of $C_2$ molecules under realistic experimental conditions. Our results demonstrate that C$_2$ cooling using the Swan ($d^3\Pi_\text{g} \leftrightarrow a^3\Pi_\text{u}$) and Duck ($d^3\Pi_\text{g} \leftrightarrow c^3\Sigma_\text{u}^+$) bands is achievable via techniques similar to state-of-the-art molecular cooling experiments. The Phillips ($A^1\Pi_\text{u} \leftrightarrow X^1\Sigma_\text{g}^+$) and Ballik-Ramsay ($b^3\Sigma_\text{g}^- \leftrightarrow a^3\Pi_\text{u}$) bands offer the potential for narrow-line cooling. This work opens up a path to cooling of molecules with carbon-carbon bonds and may pave the way toward quantum control of organic molecules.

Related papers

• Quantum connection, charges and virtual particles [65.268245109828]
  A quantum bundle $L_hbar$ is endowed with a connection $A_hbar$ and its sections are standard wave functions $psi$ obeying the Schr"odinger equation. We will lift the bundles $L_Cpm$ and connection $A_hbar$ on them to the relativistic phase space $T*R3,1$ and couple them to the Dirac spinor bundle describing both particles and antiparticles.
  arXiv  Detail & Related papers  (2023-10-10T10:27:09Z)
• Laser Scheme for Doppler Cooling of the Hydroxyl Cation (OH$^+$) [0.0]
  We report on a cycling scheme for Doppler cooling of trapped OH$+$ ions using transitions between the electronic ground state $X3Sigma-$ and the first excited triplet state $A3Pi$. We have found that coupling into other electronic states is strongly suppressed, and have calculated the number of photon scatterings required to cool OH$+$ to a temperature where Raman sideband cooling can take over.
  arXiv  Detail & Related papers  (2023-08-28T17:32:44Z)
• High density loading and collisional loss of laser cooled molecules in an optical trap [5.79316046874697]
  SrF molecules from a red-detuned magneto-optical trap (MOT) are compressed and cooled in a blue-detuned MOT. We observe two-body loss with rate coefficient $beta = 2.7+1.2_-0.8times 10-10 text cm3 text s-1$. Achieving this density and temperature opens a path to evaporative cooling towards quantum degeneracy of laser-cooled molecules.
  arXiv  Detail & Related papers  (2023-07-11T15:35:51Z)
• On parametric resonance in the laser action [91.3755431537592]
  We consider the selfconsistent semiclassical Maxwell--Schr"odinger system for the solid state laser. We introduce the corresponding Poincar'e map $P$ and consider the differential $DP(Y0)$ at suitable stationary state $Y0$.
  arXiv  Detail & Related papers  (2022-08-22T09:43:57Z)
• Rapid generation of all-optical $^{39}$K Bose-Einstein condensates using a low-field Feshbach resonance [58.720142291102135]
  We investigate the production of all-optical $39$K Bose-Einstein condensates with different scattering lengths using a Feshbach resonance near $33$ G. We are able to produce fully condensed ensembles with $5.8times104$ atoms within $850$ ms evaporation time at a scattering length of $232. Based on our findings we describe routes towards high-flux sources of ultra-cold potassium for inertial sensing.
  arXiv  Detail & Related papers  (2022-01-12T16:39:32Z)
• Spectroscopic characterization of the a$^3\Pi$ state of aluminum monofluoride [0.9485862597874625]
  All $Q$ lines of the strong A$1Pi$ $leftarrow$ X$1Sigma+$ transition around 227nm are rotationally closed. The same holds for the narrow, spin-forbidden a$3Pi$ $leftarrow$ X$1Sigma+$ transition around 367 nm.
  arXiv  Detail & Related papers  (2021-12-17T13:09:37Z)
• High-resolution 'magic'-field spectroscopy on trapped polyatomic molecules [62.997667081978825]
  Rapid progress in cooling and trapping of molecules has enabled first experiments on high resolution spectroscopy of trapped diatomic molecules. Extending this work to polyatomic molecules provides unique opportunities due to more complex geometries and additional internal degrees of freedom.
  arXiv  Detail & Related papers  (2021-10-21T15:46:17Z)
• Rovibrational structure of the Ytterbium monohydroxide molecule and the $\mathcal{P}$,$\mathcal{T}$-violation searches [68.8204255655161]
  The energy gap between levels of opposite parity, $l$-doubling, is of a great interest. The influence of the bending and stretching modes on the sensitivities to the $mathcalP$,$mathcalT$-violation requires a thorough investigation.
  arXiv  Detail & Related papers  (2021-08-25T20:12:31Z)
• Algorithmic Ground-state Cooling of Weakly-Coupled Oscillators using Quantum Logic [52.77024349608834]
  We introduce a novel algorithmic cooling protocol for transferring phonons from poorly- to efficiently-cooled modes. We demonstrate it experimentally by simultaneously bringing two motional modes of a Be$+$-Ar$13+$ mixed Coulomb crystal close to their zero-point energies. We reach the lowest temperature reported for a highly charged ion, with a residual temperature of only $Tlesssim200mathrmmu K$ in each of the two modes.
  arXiv  Detail & Related papers  (2021-02-24T17:46:15Z)
• Unresolved sideband photon recoil spectroscopy of molecular ions [0.0]
  We present a general framework for simulating the expected photon recoil spectra in spectroscopy regimes. We present two complementary cases: spectroscopy of the broad 3s $2$S$_1/2$ - 3p $2$P$_3/2$ electronic transition. The atomic ion has been picked to introduce a simple system to make comparisons with experimental results.
  arXiv  Detail & Related papers  (2020-04-06T19:34:41Z)
• Shape fluctuations and optical transition of He$_{2}^{*}$ excimer tracers in superfluid $^4$He [7.678595011598074]
  He$_2*$ excimer molecules have been utilized as tracer particles of the normal component in superfluid $4$He (He II) These excimer molecules form tiny bubbles in He II and can bind to quantized vortices at sufficiently low temperatures. We present a bubble model for evaluating the surface fluctuation eigenmodes of the excimers in He II.
  arXiv  Detail & Related papers  (2020-01-16T03:05:51Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.