Two-dimensional grating magneto-optical trap

Abstract

We demonstrate a two dimensional grating magneto-optical trap (2D GMOT) with a single input cooling laser beam and a planar diffraction grating using 87 Rb. This configuration increases experimental access when compared with a traditional 2D MOT. As described in the paper, the output flux is several hundred million rubidium atoms/s at a mean velocity of 16.5(9) m/s and a velocity distribution of 4(3) m/s standard deviation. We use the atomic beam from the 2D GMOT to demonstrate loading of a three dimensional grating MOT (3D GMOT) with 2.46(7) × 10 8 atoms. Methods to improve output flux are discussed.

Membrane MOT: Trapping Dense Cold Atoms in a Sub-Millimeter Diameter Hole of a Microfabricated Membrane Device

“…The past two decades have witnessed remarkable advances in computing and sensing demonstrations that leverage coherence and entanglement in systems well-described by quantum mechanics 1,2 . Concurrently, the advent of microfabrication techniques promises to buttress the exploration of new frontiers in quantum applications [3][4][5] through atom-light interactions [6][7][8][9][10][11][12][13][14][15][16] in addition to incorporating compact MOTs [17][18][19][20][21][22][23][24][25] on atom chips [26][27][28][29][30][31][32][33] and superconducting circuits [34][35][36][37][38] . Already, quantum engineering for integrated quantum systems has seen the development of compact and scalable laser systems using hybrid integrated photonic circuits 39,40 with silicon photonics, III-V photonics and nonlinear optics.…”

Tunable axial potentials for atom-chip waveguides

“…For the optimal and low-power configurations, Eqs. (12) and (13) are numerically inverted. For the case of the optimal configuration the currents are given by the relations…”

“…Magnetic trap capabilities can be expanded with the addition of radio frequency [3,4] and microwave [5] fields. Periodic wire structures [6][7][8], permanent magnets [9], diffractive magnetic lattices [10,11], and optical elements for the generation [12][13][14], manipulation [15], and detection [16] of ultracold ensembles have been successfully integrated with atom chips. Due to their extensive configurability, and compact size, atom chips have become a cornerstone of emerging atomic sensor technologies [17][18][19][20][21][22].…”

Optical focusing based on the planar metasurface reflector with application to trapping cold molecules

“…Such a strong focusing optical field reflected by the metasurfaces can provide a deep potential to trap the cold atoms (or molecules), so it would be interesting and worthwhile to design some controllable optical traps based on the metasurfaces and explore their potential applications in the fields of cold atoms (or molecules). Recently, focusing optical field based on planar diffraction of a grating reflector has been used to achieve magneto-optical trap (MOT) of Rb atoms [23][24][25].…”