Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Gregory A. Howland"'
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Quantifying entanglement in a large quantum system requires an intractable number of measurements. Here, the authors demonstrate a method for certifying entanglement from extremely undersampled data by combining a new quantitative entanglement witnes
Externí odkaz:
https://doaj.org/article/b993628a8a3a45e6b14d326d3b257e82
Autor:
James Schneeloch, Richard J. Birrittella, Christopher C. Tison, Gregory A. Howland, Michael L. Fanto, Paul M. Alsing
Publikováno v:
Physical Review Research, Vol 4, Iss 2, p 023153 (2022)
In this work, we provide a means to quantify genuine tripartite entanglement in arbitrary (pure and mixed) continuous-variable states as measured by the tripartite entanglement of formation—a resource-based measure quantifying genuine multipartite
Externí odkaz:
https://doaj.org/article/c8451d00f47640d5b37d23d5f8fb68b7
Publikováno v:
Physical Review X, Vol 6, Iss 2, p 021018 (2016)
The resources needed to conventionally characterize a quantum system are overwhelmingly large for high-dimensional systems. This obstacle may be overcome by abandoning traditional cornerstones of quantum measurement, such as general quantum states, s
Externí odkaz:
https://doaj.org/article/e7875584e09a40fdb59c876a32031f70
Autor:
Gregory A. Howland, John C. Howell
Publikováno v:
Physical Review X, Vol 3, Iss 1, p 011013 (2013)
We implement a double-pixel compressive-sensing camera to efficiently characterize, at high resolution, the spatially entangled fields that are produced by spontaneous parametric down-conversion. This technique leverages sparsity in spatial correlati
Externí odkaz:
https://doaj.org/article/9765b78432c84adaa8ac1a6deecf6294
Autor:
Evan Manfreda-Schulz, J. Dulany Elliot, Matthew van Niekerk, Daniel Proctor, Christopher C. Tison, Michael L. Fanto, Stefan F. Preble, Gregory A. Howland
Publikováno v:
Frontiers in Optics + Laser Science 2022 (FIO, LS).
We present an on-chip source of path-entangled photonic qudits by parallel excitation of 8 microring pair sources. The device is foundry-fabricated and uses advanced packaging techniques, a significant advance in generating high-dimensional quantum l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::904b04676e71e4be213c1afc065b8d63
https://doi.org/10.1364/fio.2022.fth3e.3
https://doi.org/10.1364/fio.2022.fth3e.3
Autor:
Evan Manfreda-Schulz, J. Dulany Elliot, Matthew van Niekerk, Christopher C. Tison, Michael L. Fanto, Stefan F. Preble, Gregory A. Howland
Publikováno v:
Quantum 2.0 Conference and Exhibition.
We present an on-chip source of path-entangled photonic qudits by parallel excitation of 8 microring pair sources. The device is foundry-fabricated and uses advanced packaging techniques, a significant advance in generating high-dimensional quantum l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d1d8f3c1a59ce227221525c330ab2ad
https://doi.org/10.1364/quantum.2022.qtu4b.4
https://doi.org/10.1364/quantum.2022.qtu4b.4
Autor:
Vijay Soorya Shunmuga Sundaram, Evan Manfreda-Schulz, Todd H. Stievater, Nathan F. Tyndall, Thomas Palone, Venkatesh Deenadayalan, Christopher Tison, Zachary Smith, David Hucul, Gregory A. Howland, Michael L. Fanto, Stefan F. Preble
Publikováno v:
Conference on Lasers and Electro-Optics.
In this paper, we present CMOS-foundry-fabricated silicon nitride photonic structures at barium emission wavelengths - 493nm and 650nm. High mode-confinement, low propagation losses, and inverse-designed 3dB splitters are demonstrated.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a5b2cd53e11199b96ad1b5d1f897e1e
https://doi.org/10.1364/cleo_at.2022.jth3b.14
https://doi.org/10.1364/cleo_at.2022.jth3b.14
Autor:
Vijay Soorya Shunmuga Sundaram, Evan Manfreda-Schulz, Thomas Palone, Venkatesh Deenadayalan, Gregory A. Howland, Stefan F. Preble
Publikováno v:
Frontiers in Optics + Laser Science 2022 (FIO, LS).
We present foundry-fabricated thermo-optic phase shifters using visible wavelength silicon nitride (SiN) waveguides. A 500µm long phase shifter demonstrated a π phase shift at a Pπ≈120m W.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdcadc039a17d39cb4d9e4137b852e28
https://doi.org/10.1364/fio.2022.jtu5a.32
https://doi.org/10.1364/fio.2022.jtu5a.32
Autor:
Gregory A. Howland
Publikováno v:
Photonics for Quantum Workshop 2019.
Real-world platforms for enabling quantum information technologies are varied and imperfect; therefore, the quantum resources they provide must be characterized before they can be used. For some tasks, such as secure communication, resources like ent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a112c5f3c6ac0f85714d6ecc62899707
https://doi.org/10.1117/12.2610697
https://doi.org/10.1117/12.2610697
Autor:
Gregory A. Howland
Publikováno v:
Quantum Computing, Communication, and Simulation.
This Conference Presentation, “Efficiently quantifying entanglement in high-dimensional quantum photonic systems,” was recorded for the Photonics West 2021 Digital Forum.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::558696e3d5bde7743fd239c8e924954e
https://doi.org/10.1117/12.2583859
https://doi.org/10.1117/12.2583859