Publications (14)
Prospects for a Narrow Line MOT in YO
Alejandra L. Collopy, Matthew T. Hummon, Mark Yeo +2
In addition to being suitable for laser cooling and trapping in a magneto-optical trap (MOT) using a relatively broad (5 MHz) transition, the molecule YO possesses a narrow-l…
Miniaturized optical frequency standard for next-generation portable optical clocks
Vincent Maurice, Zachary L. Newman, Susannah Dickerson +7
Optical frequency standards, lasers stabilized to atomic or molecular transitions, are widely used in length metrology and laser ranging, provide a backbone for optical communicati…
Cold heteromolecular dipolar collisions
Brian C. Sawyer, Benjamin K. Stuhl, Mark Yeo +7
We present the first experimental observation of cold collisions between two different species of neutral polar molecules, each prepared in a single internal quantum state. Combini…
Active compensation of the AC Stark shift in a two-photon rubidium optical frequency reference using power modulation
Yorick Andeweg, John Kitching, Matthew T. Hummon
We implement a feedback protocol to suppress the AC Stark shift in a two-photon rubidium optical frequency reference, reducing its sensitivity to optical power variations by a fact…
Evaporative cooling of the dipolar radical OH
Benjamin K. Stuhl, Matthew T. Hummon, Mark Yeo +3
Atomic physics was revolutionized by the development of forced evaporative cooling: it led directly to the observation of Bose-Einstein condensation, quantum-degenerate Fermi gases…
Enabling atom-clad waveguide operation in a microfabricated alkali vapor-photonic integrated circuit
Rahul Shrestha, Khoi Tuan Hoang, Peter Riley +5
Integrating alkali atomic vapors with nanophotonic devices offers a scalable route to quantum technologies that leverage strong atom-photon interactions. While there have been many…
Sub-Doppler spectroscopy of the strontium intercombination line in a microfabricated vapor cell
Yang Li, John Kitching, Matthew T. Hummon
We report a 100 kHz linewidth for the 1S0 to 3P1 intercombination line of 88Sr atoms at 689nm in a microfabricated 9x14 x4.4 mm3 vapor cell. This puts an upper bound on the residua…
Chip-scale sub-Doppler atomic spectroscopy enabled by a metasurface integrated photonic emitter
Alexander Yulaev, Chad Ropp, John Kitching +2
We demonstrate chip-scale sub-Doppler spectroscopy in an integrated and fiber-coupled photonic-metasurface device. The device is a stack of three planar components: a photonic mode…
Magneto-optical trapping of diatomic molecules
Matthew T. Hummon, Mark Yeo, Benjamin K. Stuhl +3
The development of the magneto-optical trap revolutionized the fields of atomic and quantum physics by providing a simple method for the rapid production of ultracold, trapped atom…
Cold N+NH Collisions in a Magnetic Trap
Matthew T. Hummon, Timur V. Tscherbul, Jacek KÅos +5
We present an experimental and theoretical study of atom-molecule collisions in a mixture of cold, trapped atomic nitrogen and NH molecules at a temperature of ~mK. We me…
Magnetic trapping of atomic nitrogen (14^N) and cotrapping of NH (X-triplet-Sigma-)
Matthew T. Hummon, Wesley C. Campbell, Hsin-I Lu +3
We observe magnetic trapping of atomic nitrogen (14^N) and cotrapping of ground state imidogen (14^NH, X-triplet-Sigma-). Both are loaded directly from a room temperature beam via…
High-performance, compact optical standard
Zachary L. Newman, Vincent Maurice, Connor Fredrick +6
We describe a high-performance, compact optical frequency standard based on a microfabricated Rb vapor cell and a low-noise, external cavity diode laser operating on the Rb two-pho…
Rotational state microwave mixing for laser cooling of complex diatomic molecules
Mark Yeo, Matthew T. Hummon, Alejandra L. Collopy +5
We demonstrate the mixing of rotational states in the ground electronic state using microwave radiation to enhance optical cycling in the molecule yttrium (II) monoxide (YO). This…
Microresonator Brillouin Laser Stabilization Using a Microfabricated Rubidium Cell
William Loh, Matthew T. Hummon, Holly F. Leopardi +5
We frequency stabilize the output of a miniature stimulated Brillouin scattering (SBS) laser to rubidium atoms in a microfabricated cell to realize a laser system with frequency st…