What Makes One State More Quantum Than Another – Kings, Queens, Wehrls?
Quantifying Quantumness: A Mathematical Project ‘of Immense Beauty’ Large objects, such as baseballs, vehicles, and planets, behave in accordance with the classical laws of mechanics formulated by Sir Isaac Newton. Small ones, such as atoms and subatomic particles, are governed by quantum mechanics, where an object can behave as both a wave and a particle. […]
Tokyo University of Science Study: Spintronics AdvancesーControlling Magnetization Direction of Magnetite at Room Temperature
Spintronics AdvancesーControlling Magnetization Direction of Magnetite at Room Temperature Scientists develop an energy-efficient strategy to reversibly change “spin orientation” or magnetization direction in magnetite at room temperature Spintronics－based on the principles of electron charge and magnetic spin－goes beyond the limits of conventional electronics. However, spintronic devices are yet to see advances, because controlling the magnetization […]
U.S. NSS System Owner? Take Heed of These Four Steps Now to be Quantum Secure Before Quantum Arrives
Defending against the cryptographic risk posed by quantum computing Read More… + The National Security Agency is responsible for protecting NSS against quantum computing risks. In 2015, NSA published guidance highlighting the need to prepare for the advent of a quantum computer, and encouraging the development of post-quantum cryptographic algorithms. + The National Institute of […]
Study: Not All Secure Quantum Message Authentication Codes are Better than Classical Codes
Information-Theoretically Secure Data Origin Authentication with Quantum and Classical Resources Abstract + In conventional cryptography, information-theoretically secure message authentication can be achieved by means of universal hash functions, and requires that the two legitimate users share a random secret key, which is at least twice as long as the tag. + We address the question […]