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Atoms transported to science chamber [2025-07-08]
发布时间:2025-07-08 点击次数:

Transport of cold atoms is crucial for continuous operation, enabling applications from atomic lasers in quantum sensing to continuously operated qubits in quantum computing and simulation. However, vibrations, axial trap nonuniformity, and insufficient cooling, necessitating deep potentials, have so far limited transport of atoms near quantum degeneracy. We have managed to transport a gas of 3×105 ytterbium atoms at a temperature of 340 nK over 34 cm from the MOT chamber to the science chamber (a glass cell) in 350 ms using a moving optical lattice formed by two counter-propagating Bessel beams. By exploiting the low-diffraction property of Bessel beams and ensuring precise alignment, atoms can be accelerated to m/s by tuning the frequency difference between the two beams.