/* ---- Google Analytics Code Below */

Saturday, October 30, 2021

Entangled Photon Breakthrough

 An intriguing link between such extent of entanglement and their use for specific kinds of problems. 

Researchers set 'ultrabroadband' record with entangled photons  by University of Rochester

Quantum entanglement—or what Albert Einstein once referred to as "spooky action at a distance"— occurs when two quantum particles are connected to each other, even when millions of miles apart. Any observation of one particle affects the other as if they were communicating with each other. When this entanglement involves photons, interesting possibilities emerge, including entangling the photons' frequencies, the bandwidth of which can be controlled.

Researchers at the University of Rochester have taken advantage of this phenomenon to generate an incredibly large bandwidth by using a thin-film nanophotonic device they describe in Physical Review Letters.

The breakthrough could lead to:

Enhanced sensitivity and resolution for experiments in metrology and sensing, including spectroscopy, nonlinear microscopy, and quantum optical coherence tomography

Higher dimensional encoding of information in quantum networks for information processing and communications

"This work represents a major leap forward in producing ultrabroadband quantum entanglement on a nanophotonic chip," says Qiang Lin, professor of electrical and computer engineering. "And it demonstrates the power of nanotechnology for developing future quantum devices for communication, computing, and sensing," ... '   

Usman A. Javid et al, Ultrabroadband Entangled Photons on a Nanophotonic Chip, Physical Review Letters (2021). DOI: 10.1103/PhysRevLett.127.183601   Journal information: Physical Review Letters 

(More technical information at the link) 

No comments: