Revolutionary technology is breaking out of the lab. The British government has announced that it is deploying a top-secret quantum clock, developed by the Defence Science and Technology Laboratory (Dstl), across the military over the next five years.
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... There was a time when atomic clocks looked like pretty hot stuff. By measuring time based on the frequency of cesium-133 atoms, it was possible to build a clock that would only gain or lose a single second in 300 million years. However, compared to a quantum clock, atomic clocks are as accurate as a one-dollar antique pocket watch that's been whacked several times with a coal hammer.
By measuring how atoms jump between specific energy states, a quantum clock can reach an accuracy of gaining or losing one second in 30 billion years. That's a billion with a 'b."
It's a technology that has a lot of potential and the British military is keen to exploit it as soon as possible because it can set modern warfare on a timetable measured in nanoseconds. ...
Related ...
Quantum-entangled atomic clock keeps spookily accurate time (2021)
www.livescience.com
... Physicists imagine a day when they will be able to design a clock that's so precise, it can detect dark matter.
Physicists imagine a day when they will be able to design a clock that's so precise, it will be used to detect subtle disturbances in space-time or to find the elusive dark matter that tugs on everything yet emits no light. The ticking of this clock will be almost perfect.
That dream may not be far off: A group of researchers has created a clock that, with some tweaks, could be four to five times more precise than the world's best clocks. To put that into perspective, if today's most precise clocks started ticking at the birth of the universe, they would be off by only half a second today; with more improvements, this new clock has the potential to be off by only 0.1 second.
"Atomic clocks are by far the most precise instruments mankind has ever made by many orders of magnitude," said Vladan Vuleti, a professor of physics at MIT and senior author of a recent paper describing the work. Now, "we are pushing this boundary" further, he added. ...
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