On the local discrimination of quantum measurements

TL;DR

This paper introduces a new protocol for local discrimination of quantum measurements using multi-qubit entanglement, specifically eight-qubit GHZ states, enabling measurement discrimination without prior knowledge of outcomes.

Contribution

It presents a novel protocol for local quantum measurement discrimination utilizing multi-qubit entanglement and selective projective measurements, advancing quantum information processing techniques.

Findings

Discrimination achieved via eight-qubit GHZ states

Protocol allows discrimination without prior measurement outcome knowledge

Utilizes pre-agreed measurement timing and entanglement resources

Abstract

The discrimination of quantum measurements is an important subject of quantum information processes. In this paper we present a novel protocol for local quantum measurement discrimination with multi-qubit entanglement systems. It is shown that, in the case of Bob did not know Alice's result of measurement, if both two observers (Alice and Bob) agreed in advance that Alice should measure her qubits before an appointed time t, the local discrimination of two different kinds of measurement can be completed via numerous eight-qubit GHZ entangled states and selective projective measurement.