A protocol of quantum dense coding with gravitational cat states is proposed.We explore the effects of temperature and system parameters on dense coding capacity and provide an efficient strategy to preserve the quant...A protocol of quantum dense coding with gravitational cat states is proposed.We explore the effects of temperature and system parameters on dense coding capacity and provide an efficient strategy to preserve the quantum advantage of dense coding for these states.Our results may open new opportunities for secure communication and insights into the fundamental nature of gravity in the context of quantum information processing.展开更多
In this article,we introduce a framework for entanglement quantification of photon pairs represented by two-qubit Werner states.The measurement scheme is based on the symmetric informationally complete POVM.To make th...In this article,we introduce a framework for entanglement quantification of photon pairs represented by two-qubit Werner states.The measurement scheme is based on the symmetric informationally complete POVM.To make the framework realistic,we impose the Poisson noise on the measured two-photon coincidences.For various settings,numerical simulations were performed to evaluate the efficiency of the framework.展开更多
基金supported by the Postdoc grant of the Semnan University under Contract No.21270。
文摘A protocol of quantum dense coding with gravitational cat states is proposed.We explore the effects of temperature and system parameters on dense coding capacity and provide an efficient strategy to preserve the quantum advantage of dense coding for these states.Our results may open new opportunities for secure communication and insights into the fundamental nature of gravity in the context of quantum information processing.
基金the Foundation for Polish Science(FNP)(project First Team cofinanced by the European Union under the European Regional Development Fund)。
文摘In this article,we introduce a framework for entanglement quantification of photon pairs represented by two-qubit Werner states.The measurement scheme is based on the symmetric informationally complete POVM.To make the framework realistic,we impose the Poisson noise on the measured two-photon coincidences.For various settings,numerical simulations were performed to evaluate the efficiency of the framework.
