The gravity quantum field is calculated in flat spacetime. The curved classical metric is calculated using the expectation value of the gravity quantum field. Credit: Aalto University At long last,…
Category: Physics
Hours-long continuous lasing achieved using laser-cooled strontium atoms
The team’s experimental setup: Atoms are cooled and slowed inside a vacuum chamber, until they can be trapped in a lattice inside a cavity (black triangular cavity spacer in the…
Superconductor-quantum dot combo manipulates Majorana bound states
Left: The 2DEG chip measured in these experiments (top) connected to a chip containing electrical resonators (bottom), that enable fast calibrations. Right: Electron microscope image of a nanoscale device used…
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…
