English

Dicke states as matrix product states

Quantum Physics 2024-12-30 v2

Abstract

We derive an exact canonical matrix product state (MPS) representation for Dicke states Dkn|D^n_k\rangle with minimal bond dimension χ=k+1\chi=k+1, for general values of nn and kk, for which the W-state is the simplest case k=1k=1. We use this MPS to formulate a quantum circuit for sequentially preparing Dicke states deterministically, relating it to the recursive algorithm of B\"artschi and Eidenbenz. We also find exact canonical MPS representations with minimal bond dimension for higher-spin and qudit Dicke states.

Keywords

Cite

@article{arxiv.2408.04729,
  title  = {Dicke states as matrix product states},
  author = {David Raveh and Rafael I. Nepomechie},
  journal= {arXiv preprint arXiv:2408.04729},
  year   = {2024}
}

Comments

16 pages + Supplementary Material (cirq code); v2: improvements in the presentation, version to appear in Phys. Rev. A

R2 v1 2026-06-28T18:08:08.157Z