Quantum promises huge breakthroughs in drug discovery and last-mile delivery, but there are still unknowns about what a world in quantum’s hands will mean.
Category: quantum physics – Page 16
A major breakthrough in quantum computing has just been achieved by American researchers at MIT. This innovation, dubbed the “quantum superhighway”, revolutionizes communication between quantum processors and opens up promising new prospects for the development of more powerful and efficient supercomputers.
Quantum computers today represent the cutting edge of computing technology, capable of solving problems far beyond the capabilities of conventional supercomputers. However, their efficiency depends on fast, precise communication between their various processors. This is precisely the challenge that American engineers have just met.
The innovation developed by the MIT team consists of an interconnection device enabling instant communication between quantum processors. Unlike traditional “point-to-point” link systems, which are prone to increasing errors during data transfer, this “quantum superhighway” promotes far more efficient “all-to-all” communication.
Combining space topology and time topology, topological states that are localized simultaneously in space and time are theoretically and experimentally demonstrated, potentially enabling the space-time topological shaping of light waves with applications in spatiotemporal wave control for imaging, communications and topological lasers.
A new device enables remote entanglement, allowing distant quantum processors to communicate with one another with reduced error rates.
Researchers have developed a new method to produce eye-safe, non-toxic quantum dots that can be used in LIDAR systems.
A research team has developed the world’s first quantum microsatellite and demonstrated real-time quantum key distribution (QKD) between the satellite and multiple compact, mobile ground stations.
The research, led by Pan Jianwei, Peng Chengzhi, and Liao Shengkai from USTC, jointly with the Jinan Institute of Quantum Technology, Shanghai Institute of Technical Physics, the Innovation Academy for Microsatellites of the Chinese Academy of Sciences, and Stellenbosch University of South Africa, is published in Nature.
Quantum secure communication is fundamental to national information security and socioeconomic development. QKD, a communication method with proven unconditional security, significantly enhances data transmission security. While fiber-based QKD networks have achieved regional implementation, their practical application over long distances remains constrained by signal loss and limited coverage. Satellite-based systems present a viable solution through free-space communication, potentially enabling QKD on a global scale.
(/ ˈ m ʌr i ˈ ɡ ɛ l ˈ m æ n / ; September 15, 1929 – May 24, 2019) [ 3 ] [ 4 ] [ 5 ] [ 6 ] was an American theoretical physicist who played a preeminent role in the development of the theory of elementary particles. Gell-Mann introduced the concept of quarks as the fundamental building blocks of the strongly interacting particles, and the renormalization group as a foundational element of quantum field theory and statistical mechanics. He played key roles in developing the concept of chirality in the theory of the weak interactions and spontaneous chiral symmetry breaking in the strong interactions, which controls the physics of the light mesons. In the 1970s he was a co-inventor of quantum chromodynamics (QCD) which explains the confinement of quarks in mesons and baryons and forms a large part of the Standard Model of elementary particles and forces.
Murray Gell-Mann received the 1969 Nobel Prize in Physics for his work on the theory of elementary particles.
In a first, physicists have directly seen Hofstadter’s butterfly—a long-sought-after fractal in the quantum realm
New physics research reveals how math transforms the testing of partially entangled quantum systems, improving device accuracy.
Researchers have announced a groundbreaking experiment that simulated a traversable wormhole using a quantum computer. While no physical rupture in space-time was created, the study offers a significant step toward understanding Einstein-Rosen bridges, theoretical constructs first described by Albert Einstein and Nathan Rosen. Published in the journal Nature, the findings represent a promising avenue for probing quantum gravity experimentally.
A Glimpse of Wormhole Dynamics
The experiment, conducted on Google’s Sycamore quantum processor, involved simulating two minuscule black holes connected by a tunnel-like space-time structure. A quantum message was transmitted between these points, and researchers observed behaviors consistent with wormhole-like dynamics. Study co-author Joseph Lykken, a physicist at Fermilab, remarked, “It looks like a duck, walks like a duck, and quacks like a duck,” indicating the simulation closely mimicked a theoretical wormhole.