| Quantum interferometric sensors (2005) | |||||||||||||
Abstract | |||||||||||||
| Quantum entanglement has the potential to revolutionize the entire field of interferometric sensing by providing many Concepts of Physics, Vol. II (2005) 225 orders of magnitude improvement in interferometer sensitivity. The quantum-entangled particle interferometer approach is very general and applies to many types of interferometers. In particular, without nonlocal entanglement, a generic classical interferometer has a statistical-sampling shot-noise limited sensitivity that scales like 1 / √ N, where N is the number of particles passing through the interferometer per unit time. However, if carefully prepared quantum correlations are engineered between the particles, then the interferometer sensitivity improves by a factor of √ N to scale like 1/N, which is the limit imposed by the Heisenberg Uncertainty Principle. | |||||||||||||
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