Neutral atoms collectively coupled to a nanophotonic chip are key building blocks for quantum computers and quantum networks. We present our platform of cesium atoms integrated with a microring resonator, where approximately 70 atoms are trapped about 350 nm above from the microring surface using optical guiding and degenerate Raman sideband cooling. This setup enables the exploration of collective dynamics mediated by guided and radiative modes, leading to the observation of selective collective emission into the microring. We further discuss our progress toward implementing an evanescent trap geometry, which allows atoms to be brought closer to the microring surface and introduces spatial ordering. Trapping and cooling atoms in close proximity to nanophotonic structures advance the study of collective quantum optics and pave the way toward scalable quantum computers.Neutral atoms collectively coupled to a nanophotonic chip are key building blocks for quantum computers and quantum networks. We present our platform of cesium atoms integrated with a microring resonator, where approximately 70 atoms are trapped about 350 nm above from the microring surface using optical guiding and degenerate Raman sideband cooling. This setup enables the exploration of collective dynamics mediated by guided and radiative modes, leading to the observation of selective collective emission into the microring. We further discuss our progress toward implementing an evanescent trap geometry, which allows atoms to be brought closer to the microring surface and introduces spatial ordering. Trapping and cooling atoms in close proximity to nanophotonic structures advance the study of collective quantum optics and pave the way toward scalable quantum computers.

Optical and Quantum Sensing and Precision Metrology IIMar 5, 20260 citations

Laser cooling of cesium atoms in far-detuned optical lattices

S. Lukman Winoto

Nov 1, 19990 citations

Observation of Collective-Emission-Induced Cooling of Atoms in an Optical Cavity

Hilton W. Chan, Adam T. Black, Vladan Vuletić

We report the observation of collective-emission-induced, velocity-dependent light forces. One-third of a falling sample containing $3\ifmmode\times\else\texttimes\fi{}{10}^{6}$ cesium atoms illuminated by a horizontal standing wave is stopped by cooperatively emitting light into a vertically oriented, confocal resonator. We observe decelerations up to $1500\text{ }\text{ }\mathrm{m}/{\mathrm{s}}^{2}$ and cooling to temperatures as low as $7\text{ }\ensuremath{\mu}\mathrm{K}$, well below the free-space Doppler limit. The measured forces substantially exceed those predicted for a single two-level atom.We report the observation of collective-emission-induced, velocity-dependent light forces. One-third of a falling sample containing $3\ifmmode\times\else\texttimes\fi{}{10}^{6}$ cesium atoms illuminated by a horizontal standing wave is stopped by cooperatively emitting light into a vertically oriented, confocal resonator. We observe decelerations up to $1500\text{ }\text{ }\mathrm{m}/{\mathrm{s}}^{2}$ and cooling to temperatures as low as $7\text{ }\ensuremath{\mu}\mathrm{K}$, well below the free-space Doppler limit. The measured forces substantially exceed those predicted for a single two-level atom.

arXiv:quant-ph/0208100Physical Review LettersFeb 14, 2003150 citations

Laser Cooling and Trapping of Cesium Atoms

Muhammad Naeem Anwar

Jan 1, 20160 citations

1500\text{ }\text{ }\mathrm{m}/{\mathrm{s}}^{2}

and cooling to temperatures as low as $7\text{ }\ensuremath{\mu}\mathrm{K}$, well below the free-space Doppler limit. The measured forces substantially exceed those predicted for a single two-level atom.