Two quantum light sources entangled for the first time

An illustration of two entangled quantum light sources. /UCPH Niels Bohr Institute

An illustration of two entangled quantum light sources. /UCPH Niels Bohr Institute

Danish and German researchers say they can control two quantum light sources instead of one, creating quantum mechanical entanglement.

According to the University of Copenhagen (UCPH), one of the institutions involved in the study, quantum mechanical entanglement is the phenomenon in which two light sources instantaneous and potentially affect each other over large geographical distances.

Entanglement is fundamental to quantum networks and is central to the development of efficient quantum computers, he added.

Prior to that, researchers could only control one light source at a time, as light sources were very sensitive to external “noise” and difficult to radiate. In this study, the research team created two identical quantum light sources.

According to the university, they have also developed nanochips that are not much larger than the diameter of a human hair to precisely control each light source.

“Taking the development of quantum technologies to the next level and ‘quantizing’ society’s computers, cryptography and the internet is an important step,” said Peter Lodahl, a research fellow at UCPH’s Niels Bohr Institute.

“We have unveiled key technology extensions that are important for the most groundbreaking quantum hardware applications,” he added.

The article’s lead author, Alexey Tiranov, said that entanglement “enables the creation of entire networks of entangled quantum light sources.” much stronger.”

This study was published in a journal. Science January 26th.

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