Quantum conditional mutual information of W state in non-inertial frames

• URL: http://arxiv.org/abs/2311.14010v1
• Date: Thu, 23 Nov 2023 13:59:35 GMT
• Title: Quantum conditional mutual information of W state in non-inertial frames
• Authors: H Saveetha, Peter P. Rohde and R Chandrashekar
• Abstract summary: We characterise the QCMI of tripartite W-states when some qubits are under accelerated motion. We observe that QCMI can either increase or decrease depending on the role of the qubit being accelerated. We discuss the connection between QCMI and correlations by studying the biseparable and separable states.
• Score: 2.732919960807485
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum conditional mutual information (QCMI) is a versatile information theoretic measure. It is used to find the amount of correlations between two qubits from the perspective of a third qubit. In this work we characterise the QCMI of tripartite W-states when some of the qubits are under accelerated motion. Here for our investigations we consider a massless fermionic field in the single mode approximation. We consider all possible situations with respect to acceleration of the qubits. From our results we observe that QCMI can either increase or decrease depending on the role of the qubit being accelerated. Finally we discuss the connection between QCMI and correlations by studying the biseparable and separable states.

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