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A generalized multipath delayed-choice experiment on a large-scale quantum nanophotonic chip.
Xiaojiong Chen1, Yaohao Deng1, Shuheng Liu1
1State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China.
Nature Communications
|May 8, 2021
Summary
Quantum physics explores wave-particle duality using multipath interferometers. This study demonstrates generalized multipath wave-particle duality in a quantum delayed-choice experiment, offering new insights into quantum phenomena.
Area of Science:
- Quantum Physics
- Photonics
Background:
- Bohr's complementarity principle describes wave-particle duality.
- Previous experiments tested this in double-path interferometers.
- Extending this to multipath systems is of fundamental interest.
Purpose of the Study:
- To demonstrate generalized multipath wave-particle duality.
- To investigate quantum delayed-choice experiments in multipath systems.
Main Methods:
- Utilized large-scale silicon-integrated multipath interferometers.
- Employed quantum-controlled generalized Hadamard operations.
- Characterized particle nature via multimode which-path information and wave nature via multipath coherence.
Main Results:
- Demonstrated sophisticated transitions between wave and particle characters for single photons.
- Showcased generalized multipath wave-particle duality.
- Validated the generalization of Bohr's multipath duality relation.
Conclusions:
- Provides deep insights into multidimensional quantum physics.
- Benchmarks the controllability of integrated photonic quantum technology.
- Advances the understanding of quantum complementarity in complex systems.
