Category: Physics
Novel architecture improves control of microwave resonators for quantum computers
Superconducting qubits are cooled in a cryostat close to absolute zero temperature. Credit: University of Innsbruck Innsbruck physicists have presented a new architecture for improved quantum control of microwave resonators.…
Calculating the strong attraction of a charming particle
Using the supercomputer Fugaku (shown here), RIKEN researchers were able to determine the strong force acting between a nucleon and a charmonium particle. Credit: RIKEN A theoretical study by RIKEN…
Quantum computer outperforms supercomputers in approximate optimization tasks
Credit: AI-generated image A quantum computer can solve optimization problems faster than classical supercomputers, a process known as “quantum advantage” and demonstrated by a USC researcher in a paper recently…
Engineers advance toward a fault-tolerant quantum computer
Credit: Pixabay/CC0 Public Domain In the future, quantum computers could rapidly simulate new materials or help scientists develop faster machine‐learning models, opening the door to many new possibilities. But these…
New protocol counteracts the limitation of decoherence
The qubit state decays toward the “north pole” of the sphere due to decoherence. Using the study’s coherence-stabilized sensing protocol, the researchers temporarily counteracted the decay, leading to a larger…
Compact optical clock uses quantum interference for improved frequency stability
Theoretically calculated (left) and experimentally observed (right) spectroscopic signals in proposed method. Credit: Peter Yun An atomic clock research team from the National Time Service Center of the Chinese Academy…
The first experimental observation of Dirac exceptional points
Dirac exceptional point. The figure illustrates that the Dirac exceptional point exhibits both a real-valued energy spectrum in its vicinity and eigenstate degeneracy. Credit: Wu et al Exceptional points (EPs)…
New physics theory to study low-energy excitations in quantum quasicrystals
By developing a microscopic quantum elasticity theory, this work describes the dynamics of deformations in a quasicrystalline lattice of bosonic particles at the lowest temperatures. Figure (a) illustrates an example…
New quantum optics theory proposes that classical interference arises from bright and dark states of light
Double slit interference. Photons arrive everywhere on the screen, but in the bright/dark regions in a bright/dark quantum state, respectively, that can/cannot excite the atom which is used to monitor…
