Entanglement and Complexity of Measurement

6th International Workshop DICE2012 Spacetime – Matter – Quantum Mechanics: From the Planck Scale to Emergent Phenomena

物理学;力学

Usenko, Constantin V.^1

Theoretical Physics Department, Physics Faculty, Kyiv Shevchenko University, Kyiv 01680, Ukraine^1

关键词: Distributed state;    Quantum channel;    Quantum state;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/442/1/012061/pdf
DOI  :  10.1088/1742-6596/442/1/012061

学科分类：力学，机械学

来源: IOP

【 摘 要 】

Notion about complexity of composite systems is applied to the problem of measurement of quantum states. An expression for the determination of the value of complexity of measurement is given. Its practical meaning is illustrated in the example how this value differs when measuring complexity of authorized and non-authorized receiving of information transferred by quantum channels in protocol of direct coding. Unconditional security of information in direct coding protocol with information masking by uniformly distributed state of carrier is shown.