研究・研究者
研究会・セミナー
| 演 題 | 「単一スピン不純物の量子ダイナミクス}」 |
|---|---|
| 日 時 | 2012年08月24日(金) 14:30 |
| 講演者 | 福原 武（ドイツ、マックス プランク量子光学研究所） |
| 場 所 | 分子科学研究所 研究棟 201セミナー室 |
| 概 要 | Quantum magnetism describes the properties of many materials such as transition metal oxides and cuprate superconductors. One of its elementary processes is the propagation of spin excitations, whose space- and time-resolved observation at the single-spin level has so far remained elusive. Here we used single-site-resolved imaging of atoms in an optical lattice to directly probe the quantum dynamics of a deterministically created spin impurity, which we tracked as it spreads through either one-dimensional Mott-insulating or superfluid systems. A post-selection of the measurements allowed us to reduce the effect of temperature, leading to remarkable agreement with zero-temperature theories on timescales arising from magnetic superexchange processes. |
| お問合せ先 | 大森賢治 |
