English

$q$-analog qudit Dicke states

Quantum Physics 2025-01-28 v2

Abstract

Dicke states are completely symmetric states of multiple qubits (2-level systems), and qudit Dicke states are their dd-level generalization. We define here qq-deformed qudit Dicke states using the quantum algebra suq(d)su_q(d). We show that these states can be compactly expressed as a weighted sum over permutations with qq-factors involving the so-called inversion number, an important permutation statistic in Combinatorics. We use this result to compute the bipartite entanglement entropy of these states. We also discuss the preparation of these states on a quantum computer, and show that introducing a qq-dependence does not change the circuit gate count.

Keywords

Cite

@article{arxiv.2308.08392,
  title  = {$q$-analog qudit Dicke states},
  author = {David Raveh and Rafael I. Nepomechie},
  journal= {arXiv preprint arXiv:2308.08392},
  year   = {2025}
}

Comments

19 pages + supplementary material; v2: minor changes, version accepted by J Phys A as part of the special issue "Fields, Gravity, Strings and Beyond: In Memory of Stanley Deser"

R2 v1 2026-06-28T11:57:05.212Z