#50 Quantum Cryptography | Part 1 | Quantum Algorithms & Cryptography

Welcome to 'Quantum Algorithms & Cryptography' course ! This lecture marks the beginning of the discussion on quantum cryptography. It introduces the concept of mixed states, a generalization of pure states, and explains how to represent mixed states using density matrices. The lecture defines the properties of density matrices, such as being positive semi-definite and Hermitian, and introduces the notion of a maximally mixed state, which represents a state with maximum uncertainty. NPTEL Courses permit certifications that can be used for Course Credits in Indian Universities as per the UGC and AICTE notifications. To understand various certification options for this course, please visit https://nptel.ac.in/courses/106106241 #Quantumcryptography #Mixedstate #Purestate #Densitymatrix #Positivesemidefinite #Hermitian #Maximallymixedstate