Towards Photon-Number-Encoded High-dimensional Entanglement from a Sequentially Excited Quantum Three-Level System
Daniel A. Vajner, Nils D. Kewitz, Martin von Helversen, Stephen C. Wein, Yusuf Karli, Florian Kappe, Vikas Remesh, Saimon F. Covre da Silva, Armando Rastelli, G… 展开作者
Daniel A. Vajner, Nils D. Kewitz, Martin von Helversen, Stephen C. Wein, Yusuf Karli, Florian Kappe, Vikas Remesh, Saimon F. Covre da Silva, Armando Rastelli, Gregor Weihs, Carlos Anton-Solanas, Tobias Heindel
The sequential resonant excitation of a 2-level quantum system results in the emission of a state of light showing time-entanglement encoded in the photon-number-basis - notions that can be extended to 3-level quantum systems as discussed in a recent proposal. Here, we report the experimental implementation of a sequential two-photon resonant excitation process of a solid-state 3-level system, constituted by the biexciton-, exciton-, and ground-state of a semiconductor quantum dot. The resulting light state exhibits entanglement in time and energy, encoded in the photon-number basis, which could be used in quantum information applications, e.g., dense information encoding or quantum communication protocols. Performing energy- and time-resolved correlation experiments in combination with extensive theoretical modelling, we are able to partially retrieve the entanglement structure of the generated state.
Generation of frequency-bin-encoded dual-rail cluster states via time-frequency multiplexing of microwave photonic qubits
RIKEN Center for Quantum Computing (RQC)（理化学研究所量子计算中心）；Department of Applied Physics, Graduate School of Engineering, The University of Tokyo（东京大学大学院工学系研究科应用物理系）；Department of Applied Physics, Stanford University（斯坦福大学应用物理系）
Purcell-enhanced spin-phonon coupling with a single color center
Harvard University（哈佛大学）；The University of Tokyo（东京大学）；Korea Institute of Science and Technology (KIST)（韩国科学技术院）；Korea University of Science and Technology (UST)（韩国科学技术院）；Agency for Science Technology and Research (A*STAR)（新加坡科技研究局）；Argonne National Laboratory（阿贡国家实验室）；University of Chicago（芝加哥大学）；IonQ, Inc.（IonQ公司）；Rice University（莱斯大学）
Scientific applications of quantum computing: challenges and opportunities
University College London（伦敦大学学院）；Cardiff University（卡迪夫大学）；UK Catalysis Hub Research Complex at Harwell Rutherford Appleton Laboratory（哈维尔卢瑟福阿普顿实验室英国催化枢纽研究综合体）；London South Bank University（伦敦南岸大学）；STFC Daresbury Laboratory（STFC达尔斯伯里实验室）；University of Liverpool（利物浦大学）；University of Sheffield（谢菲尔德大学）；Phasecraft Ltd（Phasecraft有限公司）；University of Strathclyde（斯特拉斯克莱德大学）；University of Oxford（牛津大学）；Capgemini UK PLC Engineering Science（凯捷英国有限公司工程科学）；Capgemini Quantum Lab（凯捷量子实验室）
