Through the laser cooling technique, the temperature of cold atom or ion reaches nK level. With the advantage of highly controllable property, cold atom systems have been widely applied to quantum precision measurement, atomic spectroscopy, quantum computer, quantum simulation. It is vital to analyze the cold atom system exactly. By introducing a Bethe-type wavefunction, we investigate the two-body fermion system interacted by synthetic gauge field and contact interaction in a ring trap. The exact energy spectrum has been given, which show lower eigenenergy compared to the system without spin-orbit coupling. The density distributions and momentum distributions have been analyzed for various spin-orbit coupling parameters.
Optical clocks have become a very important tool of investigating the characteristics of atoms or ions, for the state-of-art instability and uncertainty. Increasing the running time of an optical atomic clock is one critical issue that scientists are still working on. In this paper we report the improvement of the atomic chamber of a calcium beam optical clock. By using a combination of microtubes as the nozzle, we achieved a very high atomic flux with small divergence. The resonant atomic flux is about 1×1012 to 1013 per second and the divergence is smaller than 30mrad. The experimental results show that the system is reasonable in design and meets the technical indicators.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.