N-Way Frequency Beamsplitter for Quantum Photonics
- URL: http://arxiv.org/abs/2405.02453v2
- Date: Wed, 15 May 2024 15:33:21 GMT
- Title: N-Way Frequency Beamsplitter for Quantum Photonics
- Authors: Richard Oliver, Miri Blau, Chaitali Joshi, Xingchen Ji, Ricardo Gutierrez-Jauregui, Ana Asenjo-Garcia, Michal Lipson, Alexander L. Gaeta,
- Abstract summary: We propose a method of achieving simultaneous, all-to-all coupling between N optical frequency modes.
We experimentally verify the quantum nature of this scheme by demonstrating three-way multiphoton interference.
- Score: 34.82692226532414
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Optical networks are the leading platform for the transfer of information due to their low loss and ability to scale to many information channels using optical frequency modes. To fully leverage the quantum properties of light in this platform, it is desired to manipulate higher-dimensional superpositions by orchestrating linear, beamsplitter-type interactions between several channels simultaneously. We propose a method of achieving simultaneous, all-to-all coupling between N optical frequency modes via N-way Bragg-scattering four-wave mixing. By exploiting the frequency degree of freedom, additional modes can be multiplexed in an interaction medium of fixed volume and loss, avoiding the introduction of excess noise. We generalize the theory of the frequency-encoded two-mode interaction to N modes under this four-wave mixing approach and experimentally verify the quantum nature of this scheme by demonstrating three-way multiphoton interference. The two input photons are shared among three frequency modes and display interference differing from that of two classical (coherent-state) inputs. These results show the potential of our approach for the scalability of photonic quantum information processing to general N-mode systems in the frequency domain.
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