Many measurements are limited by standard quantum limit (SQL). SQL is defined as the measured noise levels set by quantum mechanics. Quantum entanglement can be used to beat SQL and approach an ultimate limit called Heisenberg ...
Quantum Physics
Aug 31, 2021
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521
Atomic clocks are the most precise timekeepers in the world. These exquisite instruments use lasers to measure the vibrations of atoms, which oscillate at a constant frequency, like many microscopic pendulums swinging in ...
General Physics
Dec 16, 2020
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320
Researchers of the Schliesser Lab at the Niels Bohr Institute, University of Copenhagen, have pushed the precision of force and position measurements into a new regime. Their experiment is the first to surpass the so-called ...
General Physics
May 28, 2019
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1543
Researchers from the Moscow Institute of Physics and Technology (MIPT), Aalto University in Finland, and ETH Zurich have demonstrated a prototype device that uses quantum effects and machine learning to measure magnetic fields ...
Quantum Physics
Oct 26, 2018
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477
Noise: it affects us all by distracting us. Noise also occurs at the quantum scale and can e.g. interfere with the measurements of atomic fountain clocks or with quantum information processing. This is because at that scale, ...
Quantum Physics
Dec 22, 2017
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21
In a study published in Physics Review Letters and highlighted by APS Physics, ICFO researchers demonstrate a new technique for the coherent detection of radio frequency magnetic fields using an atomic magnetometer. They ...
Quantum Physics
Aug 2, 2017
2
31
The first direct detection of gravitational waves, a phenomenon predicted by Einstein's 1915 general theory of relativity, was reported by scientists in 2016.
General Physics
May 17, 2017
15
1615
In November of 2005, the satellite Venus Express at a speed of about 18,000 miles per hour made the trip to the second planet from the sun in about 155 days.
General Physics
Mar 29, 2017
46
191
(Phys.org) —Last week saw the physics community buzzing as a physicist suggested that the speed of light might be slower than thought—James Franson of the University of Maryland posted an article in a peer-review journal ...
What is believed to be the smallest force ever measured has been detected by researchers with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley. Using a combination of ...
General Physics
Jun 26, 2014
2
0
