# Paper with details of Xanadu hardware

**URL:** <https://discuss.pennylane.ai/t/paper-with-details-of-xanadu-hardware/750>\
**Category:** Strawberry Fields\
**Created:** [January 3, 2021, 10:01pm UTC](https://discuss.pennylane.ai/t/paper-with-details-of-xanadu-hardware/750 "2021-01-03T22:01:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![asaki](https://avatars.discourse-cdn.com/v4/letter/a/8491ac/32.png) [@asaki](https://discuss.pennylane.ai/u/asaki)\
**Post date:** [January 3, 2021, 10:01pm UTC](https://discuss.pennylane.ai/t/paper-with-details-of-xanadu-hardware/750/1 "2021-01-03T22:01:11Z")

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Is there any paper with the details of Xandau’s photonic quantum computer?  
For example, I am looking for the following information (including but limited to):

(1) What are the physical/native/basis gates of the device?  
(2) What are the fidelities of the operations (gates, readout, etc.)?  
(3) Is there any connectivity constraint among Qumodes (similar to the coupling graph of Qubits)?  
(4) What are the gate times? Does Qumodes have decoherence issues?

I am familiar with superconducting or in general qubit based hardware. I am trying to match my knowledge of superconducting qubits with this photonic device. I understand some of the concepts may not have any photonic analog.

Thanks.

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**Author:** ![Tom\_Bromley](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/tom_bromley/32/129_2.png) [@Tom\_Bromley](https://discuss.pennylane.ai/u/Tom_Bromley)\
**Post date:** [January 4, 2021, 9:56pm UTC](https://discuss.pennylane.ai/t/paper-with-details-of-xanadu-hardware/750/2 "2021-01-04T21:56:52Z")

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Hi @asaki and welcome to the discussion forums!

You can find a full list of Xanadu-authored papers [here](https://xanadu.ai/research).

To answer your questions:

- Currently we provide access to a photonic quantum device known as a Gaussian boson sampler. A high level explainer can be found [here](https://youtu.be/v7iAqcFCTQQ) and you can also [request access](https://xanadu.ai/access). However, check out [this paper](https://arxiv.org/abs/2010.02905) to get an idea of our longer-term roadmap. You can also visit our online docs [here](https://strawberryfields.ai/photonics/conventions/index.html) for more details photonic states/gates and [here](https://strawberryfields.ai/photonics/hardware/details.html#x8-hardware-details) within the context of our current hardware.
- In photonics we typically have to deal with photon loss as the main source of noise, so _loss_ is the common term used as a measure of how well the gate is performing. You can probably find typical loss numbers in our papers but we’d also like to provide them in a single location on our website for each chip.
- In terms of connectivity, you can see our current chip [here](https://strawberryfields.ai/photonics/demos/tutorial_X8.html#device-details). Generally, we are able to implement and control a general interferometer.

I hope this helps!  
Thanks,  
Tom