Quantum Sensing Nears Heisenberg Limit

Improved Quantum Sensing; Nears Heisenberg Limit.  The U.S.’s Oak Ridge National Laboratory Quantum Information Science Group is in an on-going quest to reach the elusive edge of possible measurement at the quantum level – the Heisenberg limit. Recent work is considered to be a significant achievement and an indication that a new device employed by the team, called a highly non-linear fiber-based phase-sensitive amplifier, will approach this limit.  The device uses photon analysis from the intersection of two beams of light. Interferometry involves splitting light into two modes —one sensing a phase change and the other remaining as a reference.  The team is looking to “build the most sensitive instruments allowed by quantum mechanics.”  Precise measurements at the quantum level are needed for quantum computing to further its advance.

Reference is found at newswise…

Werner Heisenberg, circa 1924.
2 weeks ago