ON-DEMAND ATOMTRONIC ARCHITECTURES ON A SUPERCONDUCTING ATOM CHIP

Abstract

In the recent years, the emerging field of atomtronics has gained large interest. Atomtronic circuits employ atomic currents in lieu of the electrons and allows to build novel devices, such as quantum sensors, analogues of quantum electronics and quantum computing structures. In this thesis I explored two possible techniques to realize such devices. I have worked with superconducting atom traps and optical traps loaded with both ultracold atoms and Bose-Einstein condensates (BECs). The atoms can be trapped using superconducting vortices shaped by an external arbitrary light field or using patterned optical fields. Moreover, we have realized novel high temperature superconducting chips combining trapping geometries and microwave circuits, with lumped element resonators. These resonators can be used to couple atoms in Rydberg states via electric dipole-dipole interaction. One can envision that these novel devices could be employed for transfer of quantum information between superconducting resonators and atoms. Combining together the superconducting chips and the tailored trapping techniques based on light shaping potentials we can create an integrated hybrid system for the realization of complex atomtronic devices.