期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 113, 期 34, 页码 E4946-E4955出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1603777113
关键词
nanophotonics; quantum matter; cold atoms; quantum many-body; quantum spin
资金
- Institute for Quantum Information and Matter, a National Science Foundation (NSF) Physics Frontier Center
- Moore Foundation
- Air Force Office of Scientific Research (AFOSR) Quantum Memories in Photon-Atomic Solid-State Systems Multidisciplinary Research Program of the University Research Initiative (MURI)
- Department of Defense National Security Science and Engineering Faculty Fellowship Program
- NSF [PHY1205729]
- Office of Naval Research (ONR) [N00014-16-1-2399]
- ONR Quantum Opto-Mechanics with Atoms and Nanostructured Diamond MURI
- European Union
- Alexander Von Humboldt Foundation
- Intra-European Marie Curie Fellowship Nanophotonics for Quantum Information and Simulation [625955]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1205729] Funding Source: National Science Foundation
We present a platform for the simulation of quantum magnetism with full control of interactions between pairs of spins at arbitrary distances in 1D and 2D lattices. In our scheme, two internal atomic states represent a pseudospin for atoms trapped within a photonic crystal waveguide (PCW). With the atomic transition frequency aligned inside a band gap of the PCW, virtual photons mediate coherent spin-spin interactions between lattice sites. To obtain full control of interaction coefficients at arbitrary atom-atom separations, ground-state energy shifts are introduced as a function of distance across the PCW. In conjunction with auxiliary pump fields, spin-exchange versus atom-atom separation can be engineered with arbitrary magnitude and phase, and arranged to introduce nontrivial Berry phases in the spin lattice, thus opening new avenues for realizing topological spin models. We illustrate the broad applicability of our scheme by explicit construction for several well-known spin models.
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