Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Hari Krovi"'
Publikováno v:
npj Quantum Information, Vol 6, Iss 1, Pp 1-12 (2020)
Abstract Quantum key distribution (QKD) allows for secure communications safe against attacks by quantum computers. QKD protocols are performed by sending a sizeable, but finite, number of quantum signals between the distant parties involved. Many QK
Externí odkaz:
https://doaj.org/article/a41e6c0a09584004aa3c2559bb104c77
Autor:
Hari Krovi
Publikováno v:
Quantum, Vol 7, p 913 (2023)
We present substantially generalized and improved quantum algorithms over prior work for inhomogeneous linear and nonlinear ordinary differential equations (ODE). Specifically, we show how the norm of the matrix exponential characterizes the run time
Externí odkaz:
https://doaj.org/article/8bc0fd28c55b4d429792496f1e4d97f4
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 013310 (2020)
Quantum repeaters are indispensable for high-rate, long-distance quantum communications. The vision of a future quantum internet strongly hinges on realizing quantum repeaters in practice. Numerous repeaters have been proposed for discrete-variable (
Externí odkaz:
https://doaj.org/article/f1d779b6e37e40cdac18a8d0a1a682de
Autor:
Hari Krovi
Publikováno v:
Quantum, Vol 3, p 122 (2019)
The Schur transform is a unitary operator that block diagonalizes the action of the symmetric and unitary groups on an $n$ fold tensor product $V^{\otimes n}$ of a vector space $V$ of dimension $d$. Bacon, Chuang and Harrow [5] gave a quantum algorit
Externí odkaz:
https://doaj.org/article/4abc1ef6bb704213b5cfe6238d5573ba
Publikováno v:
Quantum, Vol 2, p 44 (2018)
Recent work has shown that quantum computers can compute scattering probabilities in massive quantum field theories, with a run time that is polynomial in the number of particles, their energy, and the desired precision. Here we study a closely relat
Externí odkaz:
https://doaj.org/article/4a472db317c94b89b802717869ad1e1d
Autor:
Saikat Guha, Patrick Hayden, Hari Krovi, Seth Lloyd, Cosmo Lupo, Jeffrey H. Shapiro, Masahiro Takeoka, Mark M. Wilde
Publikováno v:
Physical Review X, Vol 4, Iss 1, p 011016 (2014)
The locking effect is a phenomenon that is unique to quantum information theory and represents one of the strongest separations between the classical and quantum theories of information. The Fawzi-Hayden-Sen locking protocol harnesses this effect in
Externí odkaz:
https://doaj.org/article/29d66e65e8ab438f8a94a51e6d6e83ec
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Nature Communications
Nature Communications
Quantum process tomography has become increasingly critical as the need grows for robust verification and validation of candidate quantum processors, since it plays a key role in both performance assessment and debugging. However, as these processors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71f15e7ac615c9ee6b50ac8734f6a0d5
https://doaj.org/article/04158d734a05489c9f7057b405121fd3
https://doaj.org/article/04158d734a05489c9f7057b405121fd3
Quantum communications capacity using direct transmission over length-$L$ optical fiber scales as $R \sim e^{-\alpha L}$, where $\alpha$ is the fiber's loss coefficient. The rate achieved using a linear chain of quantum repeaters equipped with quantu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9b233e29b0fba4bf76f61330b3a705f
http://arxiv.org/abs/2105.01002
http://arxiv.org/abs/2105.01002
Publikováno v:
CDC
In this paper, we explore a new approach to optimization of cost or utility functions defined over a surface, a manifold, or its simplicial decomposition. In the era of Big Data, heterogeneous signal samples sometimes embed with less distortion in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d768cfb94bc101bbf065a7e45de0361a
https://doi.org/10.1109/cdc42340.2020.9303908
https://doi.org/10.1109/cdc42340.2020.9303908
Autor:
Andrew M. Childs, Nuno Loureiro, Konstantina Trivisa, Jin-Peng Liu, Hari Krovi, Herman Oie Kolden
Publikováno v:
Proc Natl Acad Sci U S A
Nonlinear differential equations model diverse phenomena but are notoriously difficult to solve. While there has been extensive previous work on efficient quantum algorithms for linear differential equations, the linearity of quantum mechanics has li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::faee0b49db0480ca69d0f4e4c0417848
http://arxiv.org/abs/2011.03185
http://arxiv.org/abs/2011.03185