New design surpasses the coherent interaction limit
Coherent light-matter interaction at the single photon level is a long-standing goal for quantum operations. To reach such strong coupling regime, previous studies mainly focus on improving the quality (Q) ...
Quantum computing: Manipulating a single nuclear spin qubit of a laser cooled atom
It is advantageous to implement a quantum bit (qubit) with a single nuclear spin because the nuclear spin is robust against any stray magnetic fields. This robustness can be attributed to the small magnitude ...
May the force be with us? Precise measurements test quantum electrodynamics, constrain possible fifth fundamental force
Updating the textbook: Is the radius of a proton wrong?
Striving for agreement between theory and experiment and pushing the boundaries of precision are important parts of the scientific process.
New experiments challenge fundamental understanding of electromagnetism
(Phys.org)—A cornerstone of physics may require a rethink if findings at the National Institute of Standards and Technology (NIST) are confirmed. Recent experiments suggest that the most rigorous predictions ...
The world's most stable laser also promises heightened test precision
(Phys.org)—The world's most stable laser – with frequency variation of no more than 2 parts in 10,000 trillion – has been developed and tested by an international collaboration of scientists at NIST/JILA ...
Book illuminates life, legacy of physicist Feynman
From childhood sweetheart to quantum electrodynamics, the life and scientific contributions of the legendary Richard Feynman, a physicist of mythic hero status, are given a new and stimulating perspective ...
Particle physics: 'Honey, I shrunk the proton'
Scientists lobbed a bombshell into the world of sub-atomic theory on Wednesday by reporting that a primary building block of the visible Universe, the proton, is smaller than previously thought.
Researcher studies the universe through quantum electrodynamics
(PhysOrg.com) -- Fundamental constants, such as the standards for length and mass, are a given in our society. However, research has shown that these constants might be changing slightly with the expansion of the universe.