In the modern digital age, where data flows freely and sensitive information is constantly in transit, secure communication has become essential. Traditional encryption methods, while effective, are not immune to the evolving threat landscape. This is where quantum key distribution (QKD) emerges as a revolutionary solution, offering unmatched security for transmitting sensitive data.
The idea of quantum key distribution (QKD) dates back to Stephen Wiesner’s concept of quantum conjugate coding at Columbia University in the 1970s. Charles H. Bennett later built on this idea, introducing the first QKD protocol, BB84, in the 1980s, using nonorthogonal states. Since then, it has matured into one of the most established quantum technologies, commercially available for over 15 years.
The secure quantum communication covered a distance of about 4,000 kilometers using China’s quantum satellite Mozi.
Scientists in Russia and China have established quantum communication encrypted with the help of secure keys transmitted by China’s quantum satellite, reports SCMP.
In our new paper, we’ve investigated how quantum particles could move in a complex structure like the brain, but in a lab setting. If our findings can one day be compared with activity measured in the brain, we may come one step closer to validating or dismissing Penrose and Hameroff’s controversial theory.
Brains and Fractals
Our brains are composed of cells called neurons, and their combined activity is believed to generate consciousness. Each neuron contains microtubules, which transport substances to different parts of the cell. The Penrose-Hameroff theory of quantum consciousness argues that microtubules are structured in a fractal pattern which would enable quantum processes to occur.
Researchers are actively engaged in the dynamic manipulation of quantum systems and materials to realize significant energy management and conservation breakthroughs.
This endeavor has catalyzed the development of a cutting-edge platform dedicated to creating quantum thermal machines, thereby unlocking the full potential of quantum technologies in advanced energy solutions.
A team of researchers has analyzed more than one million galaxies to explore the origin of the present-day cosmic structures, reports a recent study published in Physical Review D as an Editors’ Suggestion.
Until today, precise observations and analyses of the cosmic microwave background (CMB) and large-scale structure (LSS) have led to the establishment of the standard framework of the universe, the so-called ΛCDM model, where cold dark matter (CDM) and dark energy (the cosmological constant, Λ) are significant characteristics.
This model suggests that primordial fluctuations were generated at the beginning of the universe, or in the early universe, which acted as triggers, leading to the creation of all things in the universe including stars, galaxies, galaxy clusters, and their spatial distribution throughout space. Although they are very small when generated, fluctuations grow with time due to the gravitational pulling force, eventually forming a dense region of dark matter, or a halo. Then, different halos repeatedly collided and merged with one another, leading to the formation of celestial objects such as galaxies.
In a public lecture titled “The Meaning of Spacetime,” renowned physicist Juan Maldacena outlined ideas that arose from the study of quantum aspects of black holes.
V/ Perimeter Institute
On July 27, Juan Maldacena, a luminary in the worlds of string theory and quantum gravity, will share his insights on black holes, wormholes, and quantum entanglement.
Matter inside neutron stars can have different forms: a dense liquid of nucleons or a dense liquid of quarks.
Recent studies reveal that in neutron stars, quark liquids are fundamentally different from nucleon liquids, as evidenced by the unique color-magnetic field in their vortices. This finding challenges previous beliefs in quantum chromodynamics and offers new insights into the nature of confinement.
A nice talk. At 18 minutes dude says healthspan is way more important than lifespan. Never mind that large sign behind him that says lifespan. But, not to knock it too much, yes healthspan is important too.
A quantum state of matter comprising molecules with opposite charges at each end has been made for the first time. It could help probe our understanding of the quantum properties of exotic materials.
