Suppressing measurement uncertainty in an inhomogeneous spin star system
Saeed Haddadi, Mehrdad Ghominejad, Ahmad Akhound, Mohammad Reza Pourkarimi
Abstract
The uncertainty principle is known as a foundational element of quantum theory, providing a striking lower bound to quantify our prediction for the measured result of two incompatible observables. In this work, we study the thermal evolution of the entropic uncertainty bound in the presence of quantum memory for an inhomogeneous four-qubit spin-star system that is in the thermal regime. Intriguingly, our results show that the entropic uncertainty bound can be controlled and suppressed by adjusting the inhomogeneity parameter of the system.
Topics & Concepts
Entropic uncertaintyObservableQubitUpper and lower boundsSpin (aerodynamics)QuantumWork (physics)Star (game theory)Weak measurementUncertainty principlePhysicsQuantum systemThermalStatistical physicsQuantum mechanicsAstrophysicsMathematicsThermodynamicsMathematical analysisQuantum Information and CryptographyQuantum Computing Algorithms and ArchitectureQuantum many-body systems