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A generalised multipath delayed-choice experiment on a large-scale quantum nanophotonic chip
- Source :
- Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021), Nature Communications
- Publication Year :
- 2021
- Publisher :
- SPIE, 2021.
-
Abstract
- Famous double-slit or double-path experiments, implemented in a Young's or Mach-Zehnder interferometer, have confirmed the dual nature of quantum matter, When a stream of photons, neutrons, atoms, or molecules, passes through two slits, either wave-like interference fringes build up on a screen, or particle-like which-path distribution can be ascertained. These quantum objects exhibit both wave and particle properties but exclusively, depending on the way they are measured. In an equivalent Mach-Zehnder configuration, the object displays either wave or particle nature in the presence or absence of a beamsplitter, respectively, that represents the choice of which-measurement. Wheeler further proposed a gedanken experiment, in which the choice of which-measurement is delayed, i.e. determined after the object has already entered the interferometer, so as to exclude the possibility of predicting which-measurement it will confront. The delayed-choice experiments have enabled significant demonstrations of genuine two-path duality of different quantum objects. Recently, a quantum controlled version of delayed-choice was proposed by Ionicioiu and Terno, by introducing a quantum-controlled beamsplitter that is in a coherent superposition of presence and absence. It represents a controllable experiment platform that can not only reveal wave and particle characters, but also their superposition. Moreover, a quantitative description of two-slit duality relation was initialized in Wootters and Zurek's seminal work and formalized by Greenberger,et. al. as D2+V2<br />9 pages, 5 figures
- Subjects :
- Photon
Quantum information
Computer science
Science
FOS: Physical sciences
General Physics and Astronomy
Duality (optimization)
02 engineering and technology
Interference (wave propagation)
01 natural sciences
Article
General Biochemistry, Genetics and Molecular Biology
Superposition principle
symbols.namesake
Quantum mechanics
0103 physical sciences
Statistical physics
Single photons and quantum effects
010306 general physics
Quantum
Physics
Quantum optics
Quantum Physics
Wheeler's delayed choice experiment
Multidisciplinary
Visibility (geometry)
General Chemistry
021001 nanoscience & nanotechnology
Bohr model
Quantum technology
Interferometry
symbols
Quantum Physics (quant-ph)
0210 nano-technology
Multipath propagation
Coherence (physics)
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Quantum and Nonlinear Optics VIII
- Accession number :
- edsair.doi.dedup.....a6aaf923843d25ac1850e1cc926f8e78