Diamanti (quantisticamente) inseparabili – Due diamanti del diametro di circa un millimetro collocati a una distanza di 15 centimetri l’un dall’altro sono stati “forzati”, a temperatura ambiente, a entrare in uno stato di entanglement dimostrando che è possibile sfruttare anche in oggetti macroscopici questa “stranezza” quantistica. Leggi tutto su Le Scienze.
Entangling Macroscopic Diamonds at Room Temperature – Quantum entanglement in the motion of macroscopic solid bodies has implications both for quantum technologies and foundational studies of the boundary between the quantum and classical worlds. Entanglement is usually fragile in room-temperature solids, owing to strong interactions both internally and with the noisy environment.
We generated motional entanglement between vibrational states of two spatially separated, millimeter-sized diamonds at room temperature. By measuring strong nonclassical correlations between Raman-scattered photons, we showed that the quantum state of the diamonds has positive concurrence with 98% probability. Our results show that entanglement can persist in the classical context of moving macroscopic solids in ambient conditions. Read the full text on Science