期刊
NATURE
卷 511, 期 7508, 页码 202-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nature13461
关键词
-
资金
- Austrian Science Fund (FWF) [P25354-N20]
- European Commission via the integrated project SIQS
- Institut fur Quanteninformation
- European Research Council through the CRYTERION Project [227959]
- Austrian Science Fund (FWF) [P 25354] Funding Source: researchfish
- European Research Council (ERC) [227959] Funding Source: European Research Council (ERC)
- Austrian Science Fund (FWF) [P25354] Funding Source: Austrian Science Fund (FWF)
The key to explaining and controlling a range of quantum phenomena is to study how information propagates around many-body systems. Quantum dynamics can be described by particle-like carriers of information that emerge in the collective behaviour of the underlying system, the so-called quasiparticles(1). These elementary excitations are predicted to distribute quantum information in a fashion determined by the system's interactions(2). Here we report quasiparticle dynamics observed in a quantum many-body system of trapped atomic ions(3,4). First, we observe the entanglement distributed by quasiparticles as they trace out light-cone-like wavefronts(5-11). Second, using the ability to tune the interaction range in our system, we observe information propagation in an experimental regime where the effective-light-cone picture does not apply(7,12). Our results will enable experimental studies of a range of quantum phenomena, including transport(13,14), thermalization(15), localization(16) and entanglement growth(17), and represent a first step towards a newquantum-optic regime of engineered quasiparticles with tunable nonlinear interactions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据