Quantum coherence and distribution of N-partite bosonic fields in noninertial frame

TL;DR

This paper investigates how quantum coherence in N-partite bosonic GHZ and W states behaves under acceleration, revealing coherence reduction, freezing at high accelerations, and differences in coherence distribution between the states.

Contribution

It provides a detailed analysis of quantum coherence dynamics in noninertial frames for multipartite bosonic states, highlighting differences between GHZ and W states.

Findings

Coherence decreases with acceleration and freezes at infinite acceleration.

GHZ state's coherence is globally distributed with no local coherence.

W state's coherence is bipartite and sums over all pairs.

Abstract

We study the quantum coherence and its distribution of N-partite GHZ and W states of bosonic fields in the noninertial frames with arbitrary number of acceleration observers. We find that the coherence of both GHZ and W state reduces with accelerations and freezes in the limit of infinite accelerations. The freezing value of coherence depends on the number of accelerated observers. The coherence of N-partite GHZ state is genuinely global and no coherence exists in any subsystems. For the N-partite W state, however, the coherence is essentially bipartite types, and the total coherence is equal to the sum of coherence of all the bipartite subsystems.