雷德堡原子因其巨大的原子半徑，而具有極強的偶極矩，這一特性導致兩顆雷德堡原子間會產生極強的偶極­偶極交互作用，這使得將雷德堡原子作為量子閘的想法被不斷提出。除此之外，因為極強的的偶極­偶極作用力，而使得雷德堡原子之間會產生一種名為雷德堡阻絕的現象，這也是它被選為量子位元候選者的原因之一。在這篇論文中，我們藉由產生鉀雷德堡原子時在銣­鉀混合的磁光阱中造成的螢光損失，來研究雷德堡原子在異核原子間交互作用所造的躍遷率變化與耗損。我們量測六組不同的躍遷，並觀察到主量子數越高的雷德堡原子，所造成的螢光損失越多。同時我們發現相近的S和D軌域做比較，D軌域會造成更大的原子損失。我們藉由在磁光陷阱中銣原子和鉀原子的交互作用發現，兩者的數量會在磁光陷阱中呈現競爭關係。我們將鉀原子激發到雷德堡態，並觀察銣原子在不同雷德堡態的影響。在高量子數的D能態的雷德堡態鉀原子對磁光陷阱中的銣原子造成明顯的碰撞耗損。

Rydberg atoms process strong dipole moments owing to the large Bohr ra­dius,which leads to strong dipole­dipole interactions between two Rydberg atoms.Various theories or experiments have been processed to utilize Rydberg atom asquantum gate. Due to the dipole­dipole interaction, the resulted Rydberg blockadeeffect,makes Rydberg atom as a good candidate for quantum qubit.In this thesis, we study various Rydberg transitions by observing the trap lossin a potassium­rubidium mixture MOT,while the Rydberg atoms are produced. Wemeasure the six pairs of the Rydberg transitions and found a higher loss rate whenthe principle quantum number is high. At the same time, we compare the D stateswith the nearby S states,and found that the D states cause higher trap loss. By theinteraction of two kind of atoms, the number of two species are in a competitiverelationship. To study the Rydberg interaction between two different species­K andRb,we excite39Kto various Rydberg states and observe the influence of87Rbindifferent Rydberg state. We observed strong trap loss of87Rb,while the Rydberg39Katom was excited to higher D state(ie,88D).

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