科研之友
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摘要
We describe the construction of an apparatus designed to realize a hybrid quantum system comprised of a cryogenically cooled mechanical oscillator and ultra-cold Rb-87 atoms coupled via light. The outstanding feature of our instrument is an in situ adjustable asymmetric all-fiber membrane-in-the-middle cavity located inside an ultra-high vacuum dilution refrigerator based cryostat. We show that Bose-Einstein condensates of N = 2 x 10(6) atoms can be produced in less than 20 s and demonstrate a single photon optomechanical coupling strength of g(0) = 2 pi x 9 kHz employing a high-stress Si3N4 membrane with a mechanical quality factor Q(m) > 10(7) at a cavity setup temperature of T-MiM =480 mK.
- 出版日期2017-2
