quantum effects

chinaChina’s Quantum Satellite Security Has Been Broken

China created a satellite for secure distribution of keys for encrypted data. The hope was that this would enable totally secure unbreakable transmission of the keys for coded data. Quantum key distribution (QKD) is a secure communication method which implements …

energyMicroscopic Quantum Heat Engine That Outperforms Classical Engines

Researchers have used an ensemble of NV− centers in diamond for implementing different types of quantum heat engines. They have used these to demonstrate the equivalence of the power output of two different engine types, continuous and two-stroke, for small …

physicsBlack Holes, Quantum Systems, Superconductors and Planck’s Constant are Related

Researchers from the CNRS and Université de Sherbrooke, have discovered a universal law for the electronic properties of high-temperature superconductors. They exposed superconductors to an intense magnetic field to weaken superconductivity and reveal underlying properties. They measured the variations of …

physicsQuantum mechanics time travel indicates no grandfather paradox

Dr. Seth Lloyd, an MIT professor and self-described “quantum mechanic,” describes the quantum mechanics behind time travel during a guest lecture at the Institute for Quantum Computing, University of Waterloo. Recorded on Nov. 4, 2010, this is the entire lecture …

nanoscaleSolving the issues around connecting nanowires to single atom qubits

NIST researchers have pioneered a process that drastically simplifies fabrication of the kind of nanoscale microchip features that may soon form the basis of a quantum computer, among other applications. Instead of conventional 1-or-0 computer bits stored in the form …

physicsNew Charge Quantum Interference Device developed

An international collaboration, including researchers from the National Physical Laboratory (NPL) and Royal Holloway, University of London, has successfully demonstrated a quantum coherent effect in a new quantum device made out of continuous superconducting wire – the Charge Quantum Interference …

batterySolid-State Quantum Battery

Quantum batteries should have faster charging time due to the quantum entanglement among the units. The units are all coupled to a common quantized electromagnetic mode, and photons from the energy source mediate a long-range interaction between units, generating entanglement …

physicsRussian and UK physicists develop superconducting quantum state detectors

Russian and UK physicists have developed a superconducting quantum state detectors. The researchers, who come from MIPT, the Institute of Microelectronics and High Purity Materials of the Russian Academy of Sciences, and Royal Holloway, University of London The detector consists …

physicsLargest quantum simulations using 53 qubit trapped ions and another with 51 Ryberg atoms

The University of Maryland has created the largest quantum simulation using 53 trapped-ion qubits. It is the largest quantum simulation ever performed with high- efficiency single-shot measurements of individual qubits. This provides access to arbitrary many-body correlators that carry information …

physicsTeleportation and traversible wormholes are all real

Einstein-Rosen or “ER” bridges, are equivalent to entangled quantum particles, also known as Einstein-Podolsky-Rosen or “EPR” pairs. The quantum connection between wormholes prevents their collapse without involving exotic matter. The quantum-teleportation format precludes using these traversable wormholes as time machines. …