NEW ARTICLE
Long-Lived Circular Rydberg Qubits of Alkaline-Earth Atoms in Optical Tweezers
C. Hölzl et al.
Phys. Rev. X 14, 021024 (2024)Researchers record the longest Rydberg-atom lifetime by placing strontium atoms in “circular” states, where the outer electrons move in planet-like orbits.
NEW ARTICLE
Data-Driven Compression of Electron-Phonon Interactions
Yao Luo et al.
Phys. Rev. X 14, 021023 (2024)Describing electron-phonon interactions from first principles requires matrices with billions of entries. A method to compress the matrices accelerates calculations by 2 orders of magnitude while preserving accuracy.
NEW ARTICLE
Testing the Quantumness of Gravity without Entanglement
Ludovico Lami, Julen S. Pedernales, and Martin B. Plenio
Phys. Rev. X 14, 021022 (2024)A proposed experiment could bring scientists closer to answering the long-standing question of whether gravity is a classical or a quantum phenomenon.
NEW ARTICLE
Disorder-Induced Transition from Transient Quantum Delocalization to Charge Carrier Hopping Conduction in a Nonfullerene Acceptor Material
Ljiljana Stojanović et al.
Phys. Rev. X 14, 021021 (2024)In organic semiconductors, charge carriers may form delocalized or localized quasiparticles depending on molecular properties and environmental effects. Here, it is shown how structural and electrostatic disorder induce localization.
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