English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a novel generalization of the chain mapping technique that appliesto multi-atom, multimode systems by making use of coupling matrixtransformations. This is extremely useful for tensor network simulations ofmultimode Dicke model and multi-spin-boson model because their couplingstructures are altered from the star form to the chain form with near-neighborinteractions. Our approach produces an equivalent Hamiltonian with the lattercoupling form, which we call the band Hamiltonian, and we demonstrate itsequivalence to the multimode Dicke Hamiltonian. In the single atom case, ourapproach reduces to the chain mapping technique. When considering several tensof field modes, we have found that tensor network simulation of two atoms inthe ultrastrong coupling regime is possible with our approach. We demonstratethis by considering a pair of entangled atoms confined in a cavity, interactingwith thirty electromagnetic modes.

Efficient tensor-network simulation for the few-atom multimode Dicke model via coupling-matrix transformation