Quantum optics of chiral spin networks

By Hannes Pichler, T. Ramos, Andrew J. Daley, Peter Zoller. 2014

279 citations recorded by the source corpus.

We study the driven-dissipative dynamics of a network of spin-1/2 systems coupled to one or more chiral 1D bosonic waveguides within the framework of a Markovian master equation. We determine how the interplay between a coherent drive and collective decay processes can lead to the formation of pure multipartite entangled steady states. The key ingredient for the emergence of these many-body dark states is an asymmetric coupling of the spins to left and right propagating guided modes. Such systems are motivated by experimental possibilities with internal states of atoms coupled to optical fibers, or motional states of trapped atoms coupled to a spin-orbit coupled Bose-Einstein condensate. We discuss the characterization of the emerging multipartite entanglement in this system in terms of the Fisher information.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/73fdc14d4c9cfcdb3e0e2408a2f38e62f49da406

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Structured Light: Ideas and Concepts (2020, background): “Thus, such a strong and robust spin-direction locking offers perfect “chiral unidirectional interfaces,” potentially important for many applications, such as quantum information [92, 93], topological photonics [95, 133], and chiral spin networks [134].”
Widely Tunable On-Chip Microwave Circulator for Superconducting Quantum Circuits (2017, background): “For example, they enable protocols for the generation of remote entanglement [20, 21, 22] and proposals for the construction of rich quantum many-body systems [23] that rely on directional signal routing, and allow for the use of quantum-limited reflection amplifiers [24, 25].”
Quantum matter built from nanoscopic lattices of atoms and photons (2018, background): “…July–September 2018 031002-19 Hamiltonians H̃L=R describe dynamics in which atoms interact only with atoms to the right or left (Ramos et al., 2014; Pichler et al., 2015): H̃L=R ¼ −i ΓL=R 2 X j>l=j<l ðeik0jzj−zljσjegσlge − H:c:Þ − i Γ0 2 X j σjee: ð12Þ Again, we added a phenomenological…”
Subradiant states of quantum bits coupled to a one-dimensional waveguide (2018, background): “hese systems is that the interaction between multiple qubits, mediated by photon absorption and re-emission, is of innite range. This can give rise to strong collective eects in multi-qubit systems [8,17,18]. For example, it has been observed that two qubits separated by a substantial distance can e”
Dynamics of Many-Body Photon Bound States in Chiral Waveguide QED (2019, background): “[29] H.”
Atoms in complex twisted light (2018, background): “[217][218]), but the phenomenon is general in this setting [219].”
Microwave photonics with superconducting quantum circuits (2017, background): “Topics related to the interaction between the atoms are decoherence-free subspaces [669], multiphoton generation [698], as well as the use of photonic drives to generate entanglement [255, 678, 693, 694] and dark states [255, 668, 679].”
Transverse and longitudinal angular momenta of light (2015, background): “Thus, such a strong and robust spin–direction locking offers perfect ‘‘chiral unidirectional interfaces’’, potentially important for many applications, such as quantum information [77,78], topological photonics [56,172], and chiral spin networks [83].”