Past Event

Minho Kwon - University of Wisconsin-Madison

December 13, 2019
2:00 PM - 3:00 PM
705 Pupin Hall

"Neutral Atom Quantum Computing and Rydberg blockade"

Cold neutral atoms are promising candidates for quantum information processing as they have long coherence time, excellent scalability, and controllable long-range Rydberg interaction providing means of quantum logic gates. Rydberg interactions can also be used to entangle atoms, such as a superatom, containing non-localized excitation that is shared among its constituents. These superatoms, or ensemble qubits, are alternative building blocks to realize quantum computer and atom-light interface due to its enhanced atom-light coupling and robustness against atom loss. In this talk, I will present experimental results from our group preparing and verifying ensemble qubits, interaction between two ensembles, and non-destructive state-dependent fluorescence detection of atomic qubits. I will discuss the underlying physics that has been limiting us, and present means to overcome the limitations. In the latter part of my talk, I will report recent development on novel 2d trapping technique and higher fidelity entanglement of single-atom qubits.

Minho is a postdoc on Atomic Qubit Array project in Mark Saffman's research group, working toward realization of neutral atom quantum computers.  He received his Ph.D in Physics at the University of Wisconsin-Madison, where he explored interesting dynamics of Rydberg atoms in the context of quantum information and computation.

More details on Minho's research can be found here.