Friday, May 22nd, 2020
Quantum Entanglement, Nature Communications, Jia Kong, Institute of Photonic Sciences, Morgan Mitchell, IFCO,
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Excerpt from www.upi.com
Physicists observe quantum entanglement of 15 trillion atoms
Scientists have observed an unexpectedly large quantum system featuring 15 trillion entangled atoms, according to a new study….
For the new study, published Friday in Nature Communications, researchers heated a cloud of gas atoms to temperatures upwards of 450 Kelvin. The atoms were far from isolated. Every few microseconds, billions of gas atoms would collide, causing their electrons to spin sporadically in different directions.
Physicists used a laser to measure the magnetization of the hot and chaotic cloud of gas atoms. By measuring magnetization, caused by electron spin patterns, scientists were able to detect coupling between the gas atoms. Scientists were surprised to detect entanglement of some 15 trillion atoms — a total 100 times greater than the previous entanglement record.
“If we stop the measurement, the entanglement remains for about one millisecond, which means that 1,000 times per second a new batch of 15 trillion atoms is being entangled,” first study author Jia Kong, researcher at the Institute of Photonic Sciences in Spain, said in a news release….
“This result is surprising, a real departure from what everyone expects of entanglement,” said co-author Morgan Mitchell, professor at IFCO. “We hope that this kind of giant entangled state will lead to better sensor performance in applications ranging from brain imaging to self-driving cars to searches for dark matter.”
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