Narrow-line cooling of ${}^{87}$Rb using 5S${}_{1/2}\to$ 6P${}_{3/2}$ open transition at 420 nm

Abstract

Magneto-optical trap (MOT) at narrow (weak) transition offers lower temperature and hence is the key for production of high phase density atomic cloud and subsequently quantum degeneracy with high number of atoms for many elements. In this paper, we describe loading of ${}^{87}$Rb atoms in the MOT using a narrow open transition at 420 nm from the routinely implemented MOT using broad cyclic transition at 780 nm (IR). The total linewidth of the blue transition, 5S${}_{1/2}\to$ 6P${}_{3/2}$ is 1.4 MHz, which is around 4 times narrower than the standard 5S${}_{1/2}\to$ 5P${}_{3/2}$ cyclic transition. Using this narrow transition, we have trapped around $10^8$ atoms in the MOT with a typical temperature of around $54\mu$K. We have also studied the behavior of the blue MOT with various parameters such as hold time, detuning and power of trapping and repumper beams.

arXiv comment7 pages, 8 figures

References in corpus (32)

• Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges
• JILA SrI Optical Lattice Clock with Uncertainty of $2.0\times 10^{-18}$
• Experimental investigations of the dipolar interactions between single Rydberg atoms
• A concise review of Rydberg atom based quantum computation and quantum simulation
• Relativistic many-body calculations of electric-dipole matrix elements, lifetimes and polarizabilities in rubidium
• Λ-enhanced Sub-Doppler Cooling of Lithium Atoms in D1 Gray Molasses
• Quenched Narrow-Line Laser Cooling of 40Ca to Near the Photon Recoil Limit
• All-Optical Production of a Lithium Quantum Gas Using Narrow-Line Laser Cooling
• Narrow-line magneto-optical trap for erbium
• Sub-Doppler laser cooling of fermionic 40K atoms in three-dimensional gray optical molasses
• Gray molasses cooling of ${}^{39}$K to a high phase-space density
• Simulating Quantum Materials with Digital Quantum Computers
• Quantum logic and entanglement by neutral Rydberg atoms: methods and fidelity
• Low-temperature, high-density magneto-optical trapping of potassium using the open 4S-5P transition at 405 nm
• Narrow-line Cooling and Determination of Magic Wavelength of Cd
• Narrow-line magneto-optical cooling and trapping of strongly magnetic atoms
• Quantum interference-enhanced deep sub-Doppler cooling of 39 K atoms in gray molasses
• Laser cooling for quantum gases
• Spectroscopy of a narrow-line laser cooling transition in atomic dysprosium
• Narrow-line magneto-optical trap for dysprosium atoms
• A high flux source of cold strontium atoms
• Quenched narrow-line second- and third-stage laser cooling of 40Ca
• Absolute frequency measurement of rubidium 5S-6P transitions
• Efficient production of a narrow-line erbium magneto-optical trap with two-stage slowing
• Production of large ${}^{41}$K Bose-Einstein condensates using D1 gray molasses
• Two-stage magneto-optical trapping and narrow-line cooling of ${}^6$Li atoms to high phase-space density
• Sub-Doppler laser cooling of 40K with Raman gray molasses on the D2 line
• Narrow-line magneto-optical trap for europium
• Hyperfine measurement of $6{\text{P}}_{1/2}$ state in ${}^{87}\text{Rb}$ using double resonance on blue and IR transition
• Atomic fountain of laser-cooled Yb atoms for precision measurements
• Comparison of an efficient implementation of gray molasses to narrow-line cooling for the all-optical production of a lithium quantum gas
• Resolving closely spaced levels for Doppler mismatched double resonance

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