Zobrazeno 1 - 10
of 327
pro vyhledávání: '"J Ignacio Cirac"'
Publikováno v:
New Journal of Physics, Vol 23, Iss 7, p 073052 (2021)
While temperature is well understood as an intensive quantity in standard thermodynamics, it is less clear whether the same holds in quantum systems displaying correlations with no classical analogue. The problem lies in the fact that, under the pres
Externí odkaz:
https://doaj.org/article/89ab0f431f8d4e51895a794ca3d90306
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-12 (2024)
Abstract Several quantum hardware platforms, while being unable to perform fully fault-tolerant quantum computation, can still be operated as analogue quantum simulators for addressing many-body problems. However, due to the presence of errors, it is
Externí odkaz:
https://doaj.org/article/343a1fb92d294aad95035983737ec8b9
Publikováno v:
New Journal of Physics, Vol 20, Iss 9, p 093001 (2018)
In the present work, we propose a scheme for the digital formulation of lattice gauge theories with dynamical fermions in 3 + 1 dimensions. All interactions are obtained as a stroboscopic sequence of two-body interactions with an auxiliary system. Th
Externí odkaz:
https://doaj.org/article/a8372889ebbc40518a0c35b1d7972922
Publikováno v:
New Journal of Physics, Vol 20, Iss 11, p 113017 (2018)
Tensor networks (TNs) are generated by a set of small rank tensors and define many-body quantum states in a succinct form. The corresponding map is not one-to-one: different sets of tensors may generate the very same state. A fundamental question in
Externí odkaz:
https://doaj.org/article/c3cd5e8063784faf93fe5e51ebfc0b00
Publikováno v:
New Journal of Physics, Vol 19, Iss 6, p 063038 (2017)
We present a quantum simulation scheme for the Abelian-Higgs lattice gauge theory using ultracold bosonic atoms in optical lattices. The model contains both gauge and Higgs scalar fields, and exhibits interesting phases related to confinement and the
Externí odkaz:
https://doaj.org/article/bfb6018f588e4fbea3c418f38d3add8c
Autor:
Michael Lubasch, Johanna I Fuks, Heiko Appel, Angel Rubio, J Ignacio Cirac, Mari-Carmen Bañuls
Publikováno v:
New Journal of Physics, Vol 18, Iss 8, p 083039 (2016)
We propose a systematic procedure for the approximation of density functionals in density functional theory that consists of two parts. First, for the efficient approximation of a general density functional, we introduce an efficient ansatz whose non
Externí odkaz:
https://doaj.org/article/cf1973890bbd479fbbdf036379b0684f
Publikováno v:
New Journal of Physics, Vol 17, Iss 11, p 113001 (2015)
There has been rapid development of systems that yield strong interactions between freely propagating photons in one-dimension via controlled coupling to quantum emitters. This raises interesting possibilities such as quantum information processing w
Externí odkaz:
https://doaj.org/article/1971aeb569304be2b19a68508cfdbef6
Publikováno v:
New Journal of Physics, Vol 17, Iss 8, p 082001 (2015)
We introduce a family of strongly-correlated spin wave functions on arbitrary spin- $1/2$ and spin-1 lattices in one and two dimensions. These states are lattice analogues of Moore–Read states of particles at filling fraction $1/q$ , which are non-
Externí odkaz:
https://doaj.org/article/3ce44b4af80443c7a15cc2ef32030162
Publikováno v:
New Journal of Physics, Vol 16, Iss 3, p 033025 (2014)
We introduce a two-parameter family of strongly-correlated wave functions for bosons and fermions in lattices. One parameter, q , is connected to the filling fraction. The other one, η , allows us to interpolate between the lattice limit ( $\eta =1$
Externí odkaz:
https://doaj.org/article/7597153f1cd54e3da606865479b73d1c
Publikováno v:
New Journal of Physics, Vol 16, Iss 3, p 033014 (2014)
The approximate contraction of a tensor network of projected entangled pair states (PEPS) is a fundamental ingredient of any PEPS algorithm, required for the optimization of the tensors in ground state search or time evolution, as well as for the eva
Externí odkaz:
https://doaj.org/article/af4870e5d69b4d31a3853e824827fe1e