Demonstration Of Frequency Chain Of Multiple Diode Lasers Relative To Cesium Transition

The interaction between atoms and photons has been investigated comprehensively by Cavity Quantum Electrodynamics(Cavity QED) in the last decades. With the development of atom manipulation by laser cooling and trapping techniques and the improvement of high finesse cavity with ultra-low losses, the interaction between atoms and photons has reached what is called strong-coupling range in either microwave or optical domain. In this strong-coupling regime, an entangled atom-photon-cavity system is established and this very novel system is widely used for quantum information science, such as quantum measurement, quantum computation, quantum state preparation, quantum communication, etc.In cavity QED experiment, to realize coherent interaction between neutral atoms, a miniature cavity is needed, whose cavity volume is very small and finesse is ultra-high. An ultra-high finesse miniature cavity with length of 43.9μm is established in our lab. The miniature cavity need be stabilized to the D₂ transition of cesium and the locking light couldn't influence the interaction between atoms and photons, so another resonance frequency of miniature cavity at 830.5nm is selected as locking laser to stabilize it. Because at 830.5nm no atomic reference lines are available, a low finesse Fabry-Perot cavity is established as a transfer cavity. The transfer cavity is locked to the D₂ transition of cesium, the locking lasers to the locking transfer cavity and the miniature cavity to the stabilized locking laser. Thus a...