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On-chip coherent conversion of photonic quantum entanglement between different degrees of freedom
Abstract
In the quantum world, a single particle can have various degrees of freedom to encode quantum information. Controlling multiple degrees of freedom simultaneously is necessary to describe a particle fully and, therefore, to use it more efficiently. Here we introduce the transverse waveguide-mode degree of freedom to quantum photonic integrated circuits, and demonstrate the coherent conversion of a photonic quantum state between path, polarization and transverse waveguide-mode degrees of freedom on a single chip. The preservation of quantum coherence in these conversion processes is proven by single-photon and two-photon quantum interference using a fibre beam splitter or on-chip beam splitters. These results provide us with the ability to control and convert multiple degrees of freedom of photons for quantum photonic integrated circuit-based quantum information process.
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“Moreover, a multimode waveguide that supports more than one eigenmodes enables a new DoF to encode quantum states in the high-order spatial modes | m ⟩ [45].”
From Integrated photonic quantum technologies (2020) · cites this paper as [45]
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Integrated photonic quantum technologies
Wang, J., Sciarrino, F., Laing, A., & Thompson, M. G. (2020) · Nature Photonics · doi:10.1038/s41566-019-0532-1 · Cited by 1,576
A programmable qudit-based quantum processor
Chi, Y., Huang, J., Zhang, Z., Mao, J., Zhou, Z., Chen, X., Zhai, C., Bao, J., Dai, T., Yuan, H., et al. (2022) · Nature Communications · doi:10.1038/s41467-022-28767-x · Cited by 273
Self-citationQuantum interference between transverse spatial waveguide modes
Mohanty, A., Zhang, M., Dutt, A., Ramelow, S., Nussenzveig, P., & Lipson, M. (2017) · Nature Communications · doi:10.1038/ncomms14010 · Cited by 103
Self-citationIndependent indistinguishable quantum light sources on a reconfigurable photonic integrated circuit
Ellis, D. J. P., Bennett, A. J., Dangel, C., Lee, J. P., Griffiths, J. P., Mitchell, T. A., Paraiso, T.-K., Spencer, P., Ritchie, D. A., & Shields, A. J. (2018) · Applied Physics Letters · doi:10.1063/1.5028339 · Cited by 45
Metadata
- Authors
- Feng, L.-T., Zhang, M., Zhou, Z.-Y., Li, M., Xiong, X., Yu, L., Shi, B.-S., Guo, G.-P., Dai, D.-X., Ren, X.-F., & Guo, G.-C.
- Venue
- Nature Communications
- Published
- 2016-06-20
- Volume
- 7
- Issue
- 1
- ISSN
- 2041-1723
- PMC
- PMC4915126
- Cited by
- 134
- References
- 10
- Language
- en
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