منابع مشابه
Spatial multimode entanglement within one laser beam
Optical entanglement is a key requirement for many quantum communication protocols. Conventionally entanglement is formed between two distinct beams, with the quantum correlations being measured at separate locations. We show entanglement between the modes within one beam. Our technique is particularly elegant and a major advance towards practical systems with minimum complexity. We demonstrate...
متن کاملMultimode entanglement in reconfigurable graph states using optical frequency combs
Multimode entanglement is an essential resource for quantum information processing and quantum metrology. However, multimode entangled states are generally constructed by targeting a specific graph configuration. This yields to a fixed experimental setup that therefore exhibits reduced versatility and scalability. Here we demonstrate an optical on-demand, reconfigurable multimode entangled stat...
متن کاملEffect of multimode entanglement on lossy optical quantum metrology
P. A. Knott,1,2,* T. J. Proctor,1 Kae Nemoto,3 J. A. Dunningham,4 and W. J. Munro2,3 1School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, United Kingdom 2NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan 3National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan 4Department of Physics and A...
متن کاملOptimal quantum control of multimode couplings between trapped ion qubits for scalable entanglement.
We demonstrate entangling quantum gates within a chain of five trapped ion qubits by optimally shaping optical fields that couple to multiple collective modes of motion. We individually address qubits with segmented optical pulses to construct multipartite entangled states in a programmable way. This approach enables high-fidelity gates that can be scaled to larger qubit registers for quantum c...
متن کاملPlural Quantifications and Generalized Quantifiers
This paper discusses two important results on the expressive limitations of elementary languages that David Kaplan established a few decades ago, and clarifies how they relate to the expressive power of plural constructions of natural languages. Kaplan proved that such plural quantifications as the following cannot be paraphrased into elementary languages: Most things are funny. (1) Some critic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2020
ISSN: 2469-9926,2469-9934
DOI: 10.1103/physreva.101.012324