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Charged or Not Charged: Quantum Manipulation with Trapped Single Atoms
posted by Department of Physics for HKU and Public
Event Type: Public Lecture/Forum/Seminar/Workshop/Conference/Symposium
Event Nature: Science & Technology

Event Details

PHYSICS SEMINAR
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Charged or Not Charged: Quantum Manipulation with Trapped Single Atoms


Dr. Yiheng Lin
JILA, NIST and CU Boulder Department of Physics


Abstract:

Recent decades have seen techniques being rapidly developed for trapping individual atoms, bringing low system entropy and excellent control of the couplings from the environment, making these atoms ideal building blocks to assemble quantum systems from the bottom-up. This is especially useful for the study of quantum mechanics and quantum engineering. In this talk, I will describe two experiment platforms – trapped atomic ions with electric potential and trapped neutral atoms with optical tweezers, and along the line I will focus on three experiments that shows that both platforms have demonstrated these capabilities. For trapped ions, I will describe a recent demonstration of high fidelity two-qubit quantum logic gate with two ^9Be^+ ions, and a dissipative production of a maximally entangled state with a ^9Be^+ -^24Mg+ -^24Mg^+ -^9Be^+ ion chain. For neutral atoms, I will describe a recent experiment that forms an atomic 50:50 beam splitter by careful control of trapping potentials, and based on this creating spin entanglement between two ^87Rb atoms with postselection. At the end I will describe a proposal to further develop these platforms, towards making them reliable and practical devices for quantum manipulation.

Coffee and tea will be served 20 minutes prior to the seminar.
Anyone interested is welcome to attend.

Date/Time05/04/2017 11:00-12:00
VenueRm 522, 5/F, Chong Yuet Ming Physics Building, HKU
LanguageEnglish

Registration Instruction

Registration is not required.

Contact Information

Should you have any enquiries, please feel free to contact Ms Eva Wong by email at physdept@hku.hk or by phone at 2859 2360 or by fax at 2559 9152.