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20th September, 2017
Is quantum communication the future?
Dr KK Aggarwal
For the first time, entangled particles of light have been successfully transmitted through sea water, which is known to absorb light, in a feat that can be called as 'quantum communication' or 'quantum teleportation'. 
Researchers from the Shanghai Jiao Tong University in China tested entanglement of photons in water in a proof-of-concept experiment. Saltwater from the Yellow Sea was put in a container. And, they were able to transmit entangled photons through the seawater in the 3.3 meter long container without disturbing their quantum link. In the study published in the journal The Optical Society, the researchers said, "Our results confirm the feasibility of a seawater quantum channel, representing the first step towards underwater quantum communication."
This experiment was based on the concept of "quantum entanglement", a concept that was once considered impossible by Einstein, who termed this phenomenon as "spooky action at a distance".
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Sleep deprivation may lead to chronic kidney disease
  • The disease does not have any apparent symptoms until the later stages
  • Those with underlying conditions should be careful
New Delhi, 19 September 2017: As per a recent study, those who sleep for less than 6 hours at night may be more vulnerable to chronic kidney disease (CKD). Interrupted sleep or sleep fragmentation was associated with a slightly elevated risk of developing kidney failure, the study indicated. Those with CKD also have co-occurring hypertension, obesity and diabetes, most of the times. As per the IMA, it is important to get the kidney function checked in a person who has one or more of the 'high risk' factors.

CKD is characterized by a gradual loss of kidney function over time and may eventually lead to kidney failure, leading patients to undergo dialysis or a kidney transplant.
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