研究・研究者
研究会・セミナー
| 演 題 | 「Adiabatic Quantum Computing with Rydberg Atoms」 |
|---|---|
| 日 時 | 2016年09月15日(木) 16:00 より 17:00 まで |
| 講演者 | Alexander Glätzle （インスブルック大学・博士研究員） |
| 場 所 | 分子科学研究所 研究棟2階 201セミナー室 |
| 概 要 | Adiabatic quantum computing is a form of universal quantum computation based on adiabatic state preparation. In my talk I will propose ultracold Rydberg atoms in optical lattices as a prototype for a coherent adiabatic quantum computer with fully programmable Ising interactions and, therefore as a novel platform for quantum enhanced optimization [1]. The unique combination of large coherence times, the highly developed spin-model toolbox [2,3] and sophisticated adiabatic state preparation schemes distinguishes Rydberg atoms as a natural candidate for coherent adiabatic quantum computing which allows to experimentally address current open questions such as the scaling of the minimal gap, the role decoherence and entanglement. The required fully programable infinite-range spin-glass is achieved by mapping the system to the low-energy subspace of a Z2 lattice gauge model [4]. The 4-body gauge constraints are implemented using global, problem-independent van der Waals interactions between Rubidium and auxiliary Cesium atoms weakly coupled to Rydberg states using laser-light. The programmable part translate to single-particle light-shifts. Using enhanced dressing techniques to molecular Rydberg potential we achieve an excellent ratio of interaction strength and coherence times.
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| お問合せ先 | 大森賢治 |
