A scheme for fully programmable linear quantum networks based on frequency conversion
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910325925740544 |
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| author | Folge, Patrick Stefszky, Michael Brecht, Benjamin Silberhorn, Christine |
| author_facet | Folge, Patrick Stefszky, Michael Brecht, Benjamin Silberhorn, Christine |
| contents | Linear optical quantum networks, consisting of a quantum input state and a multi-port interferometer, are an important building block for many quantum technological concepts, e.g., Gaussian boson sampling. Here, we propose the implementation of such networks based on frequency conversion by utilising a so called multi-output quantum pulse gate (mQPG). This approach allows the resource efficient and therefore scalable implementation of frequency-bin based, fully programmable interferometers in a single spatial and polarization mode. Quantum input states for this network can be provided by utilising the strong frequency entanglement of a type-0 parametric down conversion (PDC) source. Here, we develop a theoretical framework to describe linear networks based on a mQPG and PDC and utilize it to investigate the limits and scalabilty of our approach. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_06786 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A scheme for fully programmable linear quantum networks based on frequency conversion Folge, Patrick Stefszky, Michael Brecht, Benjamin Silberhorn, Christine Quantum Physics Linear optical quantum networks, consisting of a quantum input state and a multi-port interferometer, are an important building block for many quantum technological concepts, e.g., Gaussian boson sampling. Here, we propose the implementation of such networks based on frequency conversion by utilising a so called multi-output quantum pulse gate (mQPG). This approach allows the resource efficient and therefore scalable implementation of frequency-bin based, fully programmable interferometers in a single spatial and polarization mode. Quantum input states for this network can be provided by utilising the strong frequency entanglement of a type-0 parametric down conversion (PDC) source. Here, we develop a theoretical framework to describe linear networks based on a mQPG and PDC and utilize it to investigate the limits and scalabilty of our approach. |
| title | A scheme for fully programmable linear quantum networks based on frequency conversion |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2402.06786 |