Diffraction-Based Interaction-Free Measurements
arXiv:1907.05977 · doi:10.1007/s40509-019-00205-6
Abstract
We introduce diffraction-based interaction-free measurements. In contrast with previous work where a set of discrete paths is engaged, good quality interaction-free measurements can be realized with a continuous set of paths, as is typical of optical propagation. If a bomb is present in a given spatial region -- so sensitive that a single photon will set it off -- its presence can still be detected without exploding it. This is possible because, by not absorbing the photon, the bomb causes the single photon to diffract around it. The resulting diffraction pattern can then be statistically distinguished from the bomb-free case. We work out the case of single- versus double- slit in detail, where the double-slit arises because of a bomb excluding the middle region.
8 pages, 4 figures
References in corpus (12)
- Quantum Mechanical Interaction-Free Measurements
- Protocol for direct counterfactual quantum communication
- "Interaction-Free" Imaging
- Non-classical paths in interference experiments
- Counterfactual Computation
- Strengthening weak value amplification with recycled photons
- Interaction-Free Ghost-Imaging of Structured Objects
- Modification of "Counterfactual communication protocols" which eliminates weak particle traces
- Feynman Path Integral approach to electron diffraction for one and two slits, analytical results
- Pitfalls of Path Integrals: Amplitudes for Spacetime Regions and the Quantum Zeno Effect
- Fundamental Limit on ``Interaction Free'' Measurements
- Reflection of a Particle from a Quantum Measurement