Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Bogdan Opanchuk"'
Publikováno v:
PRX Quantum, Vol 2, Iss 1, p 010350 (2021)
Despite being at the heart of the theory of the “Big Bang” and cosmic inflation, the quantum-field-theory prediction of false vacuum tunneling has not been tested. To address the exponential complexity of the problem, a table-top quantum simulato
Externí odkaz:
https://doaj.org/article/1a1bee4aac9a4c75aa1055cd6a3d142e
Publikováno v:
SoftwareX, Vol 5, Iss , Pp 12-15 (2016)
We introduce an extensible software toolbox, xSPDE, for solving ordinary and partial stochastic differential equations. The toolbox makes extensive use of vector and parallel methods. Inputs are exceptionally simple, to reduce the learning curve, wit
Externí odkaz:
https://doaj.org/article/1c042db78745410ead95768e2ee86c3f
Autor:
Peter D. Drummond, Bogdan Opanchuk
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033304 (2020)
Bosonic quantum fields and quantum devices can be simulated in phase space, to overcomes exponential complexity issues as the Hilbert space dimensionality grows. Algorithms for sampling initial quantum states are analyzed here as a fundamental issue
Externí odkaz:
https://doaj.org/article/2bf7f79356074edfb5a231e2c4c43010
Many developing quantum technologies make use of quantum networks of different types. Even linear quantum networks are nontrivial, as the output photon distributions can be exponentially complex. Despite this, they can still be computationally simula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09ff669591bc1a398b9d58b311b2f539
http://arxiv.org/abs/2112.13014
http://arxiv.org/abs/2112.13014
We show how phase-space simulations of Gaussian quantum states in a photonic network permit verification of measurable correlations of Gaussian boson sampling (GBS) quantum computers. Our results agree with experiments for up to 100-th order correlat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4883edb8a9976880ba3a8fbe3a8a3fc7
http://arxiv.org/abs/2102.10341
http://arxiv.org/abs/2102.10341
Despite being at the heart of the theory of the "Big Bang" and cosmic inflation, the quantum field theory prediction of false vacuum tunneling has not been tested. To address the exponential complexity of the problem, a table-top quantum simulator in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::922b876006dc16cd25a7dda464e93ea3
http://arxiv.org/abs/2010.08665
http://arxiv.org/abs/2010.08665
Autor:
Bogdan Opanchuk, Peter D. Drummond
Publikováno v:
Physical Review Research. 2
This paper studies methods for numerical simulations of many-body quantum systems, useful for simulating photonic networks and some quantum computers. The authors show that different phase-space methods have an exponentially large range of efficiency
Publikováno v:
Physical Review Letters. 122
The truncated Wigner and positive-P phase-space representations are used to study the dynamics of a one-dimensional Bose gas. This allows calculations of the breathing quantum dynamics of higher-order solitons with 10^{3}-10^{5} particles, as in real
Autor:
L. Rosales-Zárate, R. Y. Teh, Bryan J. Dalton, Andrei Sidorov, Bogdan Opanchuk, Margaret D. Reid, Peter D. Drummond
Using criteria based on superselection rules, we analyze the quantum correlations between the two condensate modes of the Bose-Einstein condensate interferometer of Egorov et al. [Phys. Rev. A 84, 021605 (2011)]. In order to determine the two-mode co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99172b4e9cb30436235ce7d0dde234c3
http://arxiv.org/abs/1811.01387
http://arxiv.org/abs/1811.01387
Phase-space methods allow one to go beyond the mean-field approximation to simulate the quantum dynamics of interacting fields. Here, we obtain a technique for initializing either Wigner or positive-P phase-space simulations of Bose-Einstein condensa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ca274c0a188f79db6569d4d7fc89d46
http://arxiv.org/abs/1810.12984
http://arxiv.org/abs/1810.12984