Spatiotemporal entanglement of the vacuum
Pravin Kumar Dahal and Kieran Hymas
Phys. Rev. A 113, L020201 (2026) - Published 9 February, 2026
The authors study how the quantum vacuum links different regions of spacetime through entanglement, thereby finding a surprising asymmetry: past–right (future–left) pairing share full, wedge-wide entanglement, while past–left (future–right) pairing show only limited mode-to-mode correlations. Entanglement of the quantum vacuum in these sectors can be harvested and transferred to spatially separated detectors facilitating vacuum-assisted quantum teleportation.
Normal-mode-splitting-induced synchronization blockade in coupled quantum van der Pol oscillators
Nissi Thomas and M. Senthilvelan
Phys. Rev. A 113, L020202 (2026) - Published 25 February, 2026
The authors discuss a synchronization blockade in a coupled quantum van der Pol oscillator under the influence of an external drive induced by normal mode splitting. They show that the blockade can be controlled by tuning the coupling strength, enabling control of quantum synchronization through collective mode dynamics.











