A generalised multipath delayed-choice experiment on a large-scale quantum nanophotonic chip
arXiv:2105.05580 · doi:10.1038/s41467-021-22887-6
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<=1, where D is the distinguishability of whichpath information, and V is the contrast visibility of interference. In this regard, getting which-path information exclusively reduces the interference visibility, and vice versa. This double-path duality relation has been tested in pioneer experiments and recently in delayed-choice measurements.
arXiv comment9 pages, 5 figures
References in corpus (29)
- Quantifying Coherence
- Quantum Coherence as a Resource
- Significant-loophole-free test of Bell's theorem with entangled photons
- Integrated Photonic Quantum Technologies
- Security of quantum key distribution using d-level systems
- Multidimensional quantum entanglement with large-scale integrated optics
- Advances in High Dimensional Quantum Entanglement
- Experimental realization of Wheeler's delayed-choice GedankenExperiment
- Quantum Mechanics as Quantum Measure Theory
- Entanglement Certification From Theory to Experiment
- Chip-to-chip quantum teleportation and multi-photon entanglement in silicon
- Experimental non-classicality of an indivisible quantum system
- Hybrid integration methods for on-chip quantum photonics
- A quantum delayed choice experiment
- Duality of Quantum Coherence and Path Distinguishability
- Experimental Quantum Hamiltonian Learning
- Ruling Out Multi-Order Interference in Quantum Mechanics
- Delayed-choice gedanken experiments and their realizations
- Generation and sampling of quantum states of light in a silicon chip
- Relations between coherence and path information
- Entanglement-enabled delayed choice experiment
- Proposal for a quantum delayed-choice experiment
- Delayed-choice test of complementarity with single photons
- Maximal randomness expansion from steering inequality violations using qudits
- Obtaining tight bounds on higher-order interferences with a 5-path interferometer
- Multipartite entanglement measure for all discrete systems
- Measuring Quantum Coherence in Multi-Slit Interference
- Quantum wave-particle superposition in a delayed-choice experiment
- Path Predictability and Quantum Coherence in Multi-Slit Interference
Cited by in corpus (5)
- Experimental demonstration of separating the waveparticle duality of a single photon with the quantum Cheshire cat
- Coherence, Path-Predictability and I-Concurrence: A Triality
- Device-independent Verification of Quantum Coherence without Quantum Control
- Bounds on positive operator-valued measure based coherence of superposition
- Testing the postulates of quantum mechanics with coherent states of light and homodyne detection