Quantum measurement-induced antiferromagnetic order and density modulations in ultracold Fermi gases in optical lattices

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Quantum measurement-induced antiferromagnetic order and density modulations in ultracold Fermi gases in optical lattices. / Mazzucchi, Gabriel; Caballero-Benitez, Santiago F.; Mekhov, Igor B.

в: Scientific Reports, Том 6, 31196, 11.08.2016.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{d84b02226b114a8b995a3d732dbbe968,

title = "Quantum measurement-induced antiferromagnetic order and density modulations in ultracold Fermi gases in optical lattices",

abstract = "Ultracold atomic systems offer a unique tool for understanding behavior of matter in the quantum degenerate regime, promising studies of a vast range of phenomena covering many disciplines from condensed matter to quantum information and particle physics. Coupling these systems to quantized light fields opens further possibilities of observing delicate effects typical of quantum optics in the context of strongly correlated systems. Measurement backaction is one of the most funda-mental manifestations of quantum mechanics and it is at the core of many famous quantum optics experiments. Here we show that quantum backaction of weak measurement can be used for tailoring long-range correlations of ultracold fermions, realizing quantum states with spatial modulations of the density and magnetization, thus overcoming usual requirement for a strong interatomic interactions. We propose detection schemes for implementing antiferromagnetic states and density waves. We demonstrate that such long-range correlations cannot be realized with local addressing, and they are a consequence of the competition between global but spatially structured backaction of weak quantum measurement and unitary dynamics of fermions.",

author = "Gabriel Mazzucchi and Caballero-Benitez, {Santiago F.} and Mekhov, {Igor B.}",

note = "Funding Information: The work was supported by the EPSRC (EP/I004394/1). Publisher Copyright: {\textcopyright} The Author(s) 2016. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.",

year = "2016",

month = aug,

day = "11",

doi = "10.1038/srep31196",

language = "English",

volume = "6",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Quantum measurement-induced antiferromagnetic order and density modulations in ultracold Fermi gases in optical lattices

AU - Mazzucchi, Gabriel

AU - Caballero-Benitez, Santiago F.

AU - Mekhov, Igor B.

PY - 2016/8/11

Y1 - 2016/8/11

N2 - Ultracold atomic systems offer a unique tool for understanding behavior of matter in the quantum degenerate regime, promising studies of a vast range of phenomena covering many disciplines from condensed matter to quantum information and particle physics. Coupling these systems to quantized light fields opens further possibilities of observing delicate effects typical of quantum optics in the context of strongly correlated systems. Measurement backaction is one of the most funda-mental manifestations of quantum mechanics and it is at the core of many famous quantum optics experiments. Here we show that quantum backaction of weak measurement can be used for tailoring long-range correlations of ultracold fermions, realizing quantum states with spatial modulations of the density and magnetization, thus overcoming usual requirement for a strong interatomic interactions. We propose detection schemes for implementing antiferromagnetic states and density waves. We demonstrate that such long-range correlations cannot be realized with local addressing, and they are a consequence of the competition between global but spatially structured backaction of weak quantum measurement and unitary dynamics of fermions.

AB - Ultracold atomic systems offer a unique tool for understanding behavior of matter in the quantum degenerate regime, promising studies of a vast range of phenomena covering many disciplines from condensed matter to quantum information and particle physics. Coupling these systems to quantized light fields opens further possibilities of observing delicate effects typical of quantum optics in the context of strongly correlated systems. Measurement backaction is one of the most funda-mental manifestations of quantum mechanics and it is at the core of many famous quantum optics experiments. Here we show that quantum backaction of weak measurement can be used for tailoring long-range correlations of ultracold fermions, realizing quantum states with spatial modulations of the density and magnetization, thus overcoming usual requirement for a strong interatomic interactions. We propose detection schemes for implementing antiferromagnetic states and density waves. We demonstrate that such long-range correlations cannot be realized with local addressing, and they are a consequence of the competition between global but spatially structured backaction of weak quantum measurement and unitary dynamics of fermions.

UR - http://www.scopus.com/inward/record.url?scp=84982128204&partnerID=8YFLogxK

U2 - 10.1038/srep31196

DO - 10.1038/srep31196

M3 - Article

AN - SCOPUS:84982128204

VL - 6

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 31196

ER -

ID: 69878034