Two-Dimensional Quantum Walk of Correlated Photons
- URL: http://arxiv.org/abs/2007.06554v1
- Date: Mon, 13 Jul 2020 17:56:45 GMT
- Title: Two-Dimensional Quantum Walk of Correlated Photons
- Authors: Zhi-Qiang Jiao, Jun Gao, Wen-Hao Zhou, Xiao-Wei Wang, Ruo-Jing Ren,
Xiao-Yun Xu, Lu-Feng Qiao, Xian-Min Jin
- Abstract summary: Integrated photonics technology has emerged as a versatile platform to implement various quantum information tasks.
We present a genuine 2D quantum walk with correlated photons on a triangular photonic lattice, which can be mapped to a state space up to 37X37 dimensions.
A site-by-site addressing between the chip facet and the 2D fanout interface enables an observation of over 600 non-classical interferences simultaneously.
- Score: 9.911452321406838
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum walks in an elaborately designed graph, is a powerful tool simulating
physical and topological phenomena, constructing analog quantum algorithms and
realizing universal quantum computing. Integrated photonics technology has
emerged as a versatile platform to implement various quantum information tasks
and a promising candidate to perform large-scale quantum walks. Both extending
physical dimensions and involving more particles will increase the complexity
of the evolving systems and the desired quantum resources. Pioneer works have
demonstrated single particle walking on two-dimensional (2D) lattices and
multiple walkers interfering on a one-dimensional structure. However, 2D
multi-particle quantum walk, genuinely being not classically simulatable, has
been a vacancy for nearly ten years. Here, we present a genuine 2D quantum walk
with correlated photons on a triangular photonic lattice, which can be mapped
to a state space up to 37X37 dimensions. This breaks through the physically
restriction of single-particle evolution, which can encode information in a
large space and constitute high-dimensional graphs indeed beneficial to quantum
information processing. A site-by-site addressing between the chip facet and
the 2D fanout interface enables an observation of over 600 non-classical
interferences simultaneously, violating a classical limit up to 57 standard
deviations. Our platform offers a promising prospect for multi-photon quantum
walks in a large-scale 2D arrangement, paving the way for practical quantum
simulation and quantum computation beyond classical regime.
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