We propose to use chirped pulses propagating near a bandgap to remotely address quantum emitters. We introduce a particular family of chirped pulses that dynamically self-compress to sub-wavelength spot sizes during their evolution in a medium with a quadratic dispersion relation. We analytically describe how the compression distance and width of the pulse can be tuned through its initial parameters. We show that the interaction of such pulses with a quantum emitter is highly sensitive to its position due to effective Landau-Zener processes induced by the pulse chirping. Our results propose pulse engineering as a powerful control and probing tool in the field of quantum emitters coupled to structured reservoirs.
Phase-tunable remote nonreciprocal charging in waveguide QED
The Hong Kong Polytechnic University（香港理工大学）；Universidad Autónoma de Madrid（马德里自治大学）；Sun Yat-sen University（中山大学）；The Hong Kong Polytechnic University Shenzhen Research Institute（香港理工大学深圳研究院）；Research Institute for Quantum Technology, The Hong Kong Polytechnic University（香港理工大学量子技术研究所）
Long-lifetime coherence in a quantum emitter induced by a metasurface
在原子$V$跃迁的自发发射过程中，各向异性量子真空（AQV）会引起量子干涉[G. S. Agarwal，Phys. Rev. Lett. 84，5500（2000）]。然而，有限的寿命的激发态预计将强烈限制这种现象的可观察性。在本文中，我们预测，AQV可以诱导一个长寿命的相干原子$Λ$ -跃迁的过程中的自发发射，这有一个额外的优点，消除了需要相干激光激发。我们还进行了两个元表面的设计，并比较各自的效率，在远程创建一个AQV。对超表面引起的这种相干性的检测，除了是量子电动力学的另一个证明之外，还可以为量子发射器之间的相干耦合的远程控制铺平道路，这是在量子技术应用中产生纠缠的关键要求。
All-photonic entanglement swapping with remote quantum dots
Sapienza Università di Roma（罗马第一大学）；Politecnico di Milano（米兰理工大学）；Johannes Kepler University Linz（林茨约翰内斯·开普勒大学）；University of Würzburg（维尔茨堡大学）；Paderborn University（帕德博恩大学）；Universidade Estadual de Campinas（坎皮纳斯州立大学）；Vorarlberg University of Applied Sciences（福拉尔贝格应用科学大学）；Karlsruhe Institute of Technology（卡尔斯鲁厄理工学院）
Long-range quantum emitter interactions mediated by a non-local metasurface: Application to qubit-qubit entanglement
The University of Manchester（曼彻斯特大学）；Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR)（材料研究与工程研究所（新加坡科技研究局））；University of Fribourg（弗里堡大学）；Universidad de Castilla-La Mancha（卡斯蒂利亚-拉曼恰大学）；Newcastle University（纽卡斯尔大学）
