2015/10/31 by Gabriel Mazzucchi, Santiago F. Caballero-Benitez, Igor B. Mekhov · 17 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Context (archaeology) #Degenerate energy levels #Open quantum system #Quantum #Quantum dissipation #Quantum dynamics #Quantum many-body systems #Quantum phases #Quantum sensor #Quantum technology #Topological Materials and Phenomena #Ultracold atom #cond-mat.quant-gas #physics.atom-ph #physics.optics #quant-ph
paper · pdf · doi:10.1038/srep31196
published in Scientific Reports 6(1), 31196 (Nature Portfolio) · Final version
openalex created_date 2016/06/24 · openalex publication_date 2016/08/11 · arxiv created 2016/08/15 · arxiv updated 2016/08/16 · openalex updated_date 2026/08/05
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.