Physicists have achieved the first-ever real-time, 3D simulations of how intense laser beams alter the quantum vacuum — a state once assumed to be empty, but which quantum physics predicts is full of virtual electron-positron pairs….
Category: 4. Physics
-
Scientists freeze quantum motion using ultrafast laser trick
Quantum materials exhibit remarkable emergent properties when they are excited by external sources. However, these excited states decay rapidly once the excitation is removed, limiting their practical applications. A team of researchers from…
Continue Reading
-
Enter the Photonic Chern Semimetal
• Physics 18, s67
A two-dimensional photonic metamaterial combines useful features of two quantum materials.
Among the crystalline materials whose edges host exotic quantum states are the Dirac semimetal and the Chern…
Continue Reading
-
Physics – Detecting Individual Nuclear Spins
• Physics 18, s66
An optical cavity amplifies the signatures of specific nuclei in an atomic lattice.
For researchers pursuing qubits, magnetic sensors, and other applications of nuclear spins, erbium-doped yttrium…
Continue Reading
-
Room-temperature cavity exciton-polariton condensation in perovskite quantum dots
Weisbuch, C., Nishioka, M., Ishikawa, A. & Arakawa, Y. Observation of the coupled exciton-photon mode splitting in a semiconductor quantum microcavity. Phys. Rev. Lett. 69, 3314–3317 (1992).
…
Continue Reading
-
An invitation to the sample complexity of quantum hypothesis testing
Background
In this subsection, we establish some notation and recall various quantities of interest used throughout the rest of our paper.
Let \({\mathbb{N}}:=\{1,2,\ldots \}\). Throughout our paper, we let ρ and σ denote quantum states, which…
Continue Reading
-
Controlling magnetization dynamics in a single step
Controlling magnetization dynamics in a single step
Continue Reading
-
Synergistic integration of VSe2 and CuS nanostructures for advanced energy storage applications
Structural investigation of VSe2/CuS nanocomposites
Figure 2a displays the XRD patterns of the synthesized VSe2/CuS nanocomposites, as well as those of pure VSe2 and CuS. The measurements were performed across a 2θ range of 20° to 80°, with a…
Continue Reading
-
Security analysis of qutrit quantum secret sharing with linear optical correlation measurement
Three-dimensional correlation measurement with linear optical elements
In this section, an implementation of experimental elements to construct the three-dimensional correlation measurement with linear optical elements is introduced. For a qudit,…
Continue Reading
-
Experimentally probing Landauer’s principle in the quantum many-body regime
Information theory and thermodynamics constitute foundational pillars of modern technology and underpin our understanding of computers and heat engines, respectively. Although these disciplines may seem distinct, they are intricately connected….
Continue Reading