Hartree-Fock (HF) determined quantum metric, and trace condition, accompanied by the layer-4,5 occupation number. The total weight on the other 3 layers combined is ≈ 5%. The mean and variance…
Category: Quantum Physics
A new method for creating a quantum gas
Artistic illustration of bosenova. Credit: National Taiwan University Cooling atomic gases to the quantum regime often involves time-consuming steps. Electromagnetically induced transparency now achieves quantum degeneracy with high efficiency. Quantum…
Physicists create the first fully mechanical qubit
The device consists of a sapphire chip with a superconducting qubit (gray rectangles, left) on top of another that acts as a mechanical oscillator (gray dot, right). Credit: Uwe Von…
New route to quantum spin liquid materials discovered
Credit: CC0 Public Domain A new route to materials with complex disordered magnetic properties at the quantum level has been produced by scientists for the first time. The material, based…
Quantum computing researchers develop an 8-photon qubit chip
Package Image & Conceptual Chart of a Recon Photonics 4-Qubit Chip. Credit: Electronics and Telecommunications Research Institute(ETRI) A group of South Korean researchers has successfully developed an integrated quantum circuit…
How ‘clean’ does a quantum computing test facility need to be?
The electronic connections that record signals from experimental superconducting qubits must be ultra-clean to avoid stray environmental radiation interrupting quantum coherence. Credit: Eric Francavilla | Pacific Northwest National Laboratory Now…
Researchers demonstrate universal control of a quantum dot-based system with four singlet-triplet qubits
Universal single-qubit control of four singlet-triplet qubits. Credit: Nature Nanotechnology (2024). DOI: 10.1038/s41565-024-01817-9 The researchers’ system is comprised of a 2 x 4 array of germanium quantum dots, forming a…
Scientists demonstrate controlled transfer of atoms using coherent tunneling between optical tweezers
A zoom-in through the same side window shows the windows both above and below. Credit: Technion An experimental setup built at the Technion Faculty of Physics demonstrates the transfer of…
