Category: Quantum Physics
Scientists crack new method for high-capacity, secure quantum communication
(a) The experimentally retrieved (upper row) and theoretically predicted (lower row) density matrices of two selected quantum states. (b) Theoretically (left panel) and experimentally retrieved (right panel) probability-of-detection matrix. Credit:…
Quantum theory prevails in Leggett-Garg inequality test
A neutron beam (green) is split into two parts, which are then rejoined. Every single neutron travels along both paths at the same time. Credit: Vienna University of Technology Is…
The first exponential quantum advantage for a natural streaming problem
Theoretical computer scientists John Kallaugher, left, and Ojas Parekh find tasks in which quantum computers outperform normal computers, a concept called quantum advantage, at Sandia National Laboratories. Credit: Craig Fritz…
A new method to control quantum bound states in superconducting device
A schematic of a bilayer graphene Josephson junction device with a tunneling electrode. Credit: POSTECH Researchers have successfully controlled the quantum mechanical properties of Andreev bound states in bilayer graphene-based…
New research shows importance of precise topography in solid neon qubits
A diagram of an electron-on-solid-neon quantum bit. Credit: Wei Guo Quantum computers have the potential to be revolutionary tools for their ability to perform calculations that would take classical computers…
Foregoing quantum chaos to achieve high-fidelity quantum state transfer
Quantum state transfer (QST) performed in a 6×6 qubit lattice. Credit: Liang Xiang et al. 10.1038/s41467-024-48791-3. An international team of scientists from China and the U.S. has developed a scalable…
