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| # The Language-Integrated Quantum Operations (LIQ<i>Ui</i>|〉) simulator | ||
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| ## News | ||
| __2016/03/11 New introduction videos__ | ||
| This site has been moved to a new home at **http://stationq.github.io/Liquid/**. | ||
| The repository is available at http://github.com/StationQ/Liquid. | ||
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| Seven new short videos have been posted to the [LIQ<i>Ui</i>|〉 Research site](http://research.microsoft.com/en-us/projects/liquid/) | ||
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| __2016/03/04 Outputting circuits for other Quantum Languages__ | ||
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| We've uploaded sample code that shows how to print out circuits for other quantum languages. This specific example shows how to parse a circuit and generate QASM code. See [UserCode example](https://github.com/msr-quarc/Liquid/tree/master/UserCode/DaveWecker) from DaveWecker | ||
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| __2016/02/04 The Microsoft Quantum Challenge__ | ||
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| Microsoft Research is delighted to announce its first Quantum Challenge based on the simulator for Language-Integrated Quantum Operations: LIQ<i>Ui</i>\|〉 from the QuArC Group. | ||
| See http://aka.ms/quantumchallenge for full details. Closing date: April 29, 2016. | ||
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| __2016/02/01 New Version Available (time to re-install)__ | ||
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| We are pleased to announce a major new version of LIQ<i>Ui</i>\|〉 that has been re-written to be fully portable (currently on Windows, Linux and OSX). We have also improved the licensing process and have removed the registration steps completely. *All* future issues *must* be logged against this version, so we encourage anyone who has already installed the software to download the new version. | ||
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| As always, we encourage you to join our (low volume) mailing list (instructions below) so you will directly receive announcements like these. | ||
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| ## What Is LIQ<i>Ui</i>|〉? | ||
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| LIQ<i>Ui</i>|〉 is a simulation platform developed by the [Quantum Architectures and Computation](http://research.microsoft.com/en-us/groups/quarc/) team at Microsoft Research to aid in the exploration of quantum computation. | ||
| LIQ<i>Ui</i>|〉 stands for “Language Integrated Quantum Operations”. | ||
| A quantum operation is usually referred to as a unitary operator (U) applied to a column state vector (also known as a ket: |>). | ||
| The “i” is just a constant scaling factor, hence the acronym. | ||
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| LIQ<i>Ui</i>|〉 includes three simulators: | ||
| * A full state vector simulator that tracks the detailed evolution of the quantum state | ||
| * A stabilizer simulator based on CHP (Aaronson and Gottesman, http://arXiv.org/abs/quant-ph/0406196) | ||
| * A highly-optimized full state vector simulator for fermionic Hamiltonians | ||
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| LIQ<i>Ui</i>|〉 is available under a [Microsoft Research license](LICENSE.md). | ||
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| ## For More Information | ||
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| See the [Microsoft Research project page on LIQ<i>Ui</i>|〉](http://research.microsoft.com/en-us/projects/liquid/) | ||
| and the paper, [LIQ<i>Ui</i>|〉: A Software Design Architecture and Domain-Specific Language for Quantum Computing](http://research.microsoft.com/pubs/209634/1402.4467.pdf). | ||
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| To stay up to date on what we're doing with LIQ<i>Ui</i>|〉, please watch our repository and sign up for the LIQ<i>Ui</i>|〉 email list. | ||
| To sign up, send an email to [email protected] with a one-line body reading: | ||
| ``` | ||
| SUB Liquid-news FirstName LastName | ||
| ``` | ||
| Replacing FirstName and LastName with your first and last names. | ||
| If you prefer to remain anonymous, you may instead send an email containing: | ||
| ``` | ||
| SUB Liquid-news anonymous | ||
| ``` | ||
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| ## How To Cite LIQ<i>Ui</i>|〉 | ||
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| If you use LIQ<i>Ui</i>|〉 in your research, please cite it as follows: | ||
| * bibTex: | ||
| ``` | ||
| @misc{1402.4467, | ||
| author = {Dave Wecker and Krysta M.~Svore}, | ||
| title = {{LIQU}i|>: {A} {S}oftware {D}esign {A}rchitecture and {D}omain-{S}pecific | ||
| {L}anguage for {Q}uantum {C}omputing}, | ||
| year = {2014}, | ||
| eprint = {1402.4467}, | ||
| url = {arXiv:1402.4467v1} | ||
| } | ||
| ``` | ||
| * Text: | ||
| ``` | ||
| D. Wecker and K. M. Svore, “LIQ<i>Ui</i>|〉: A Software Design Architecure and Domain-Specific | ||
| Language for Quantum Computing,” (2014), arXiv:1402.4467v1 [quant-ph], | ||
| http://arxiv.org/abs/1402.4467. | ||
| ``` | ||
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| ## What Can I Do With It? | ||
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| You can use LIQ<i>Ui</i>|〉 to define quantum circuits, render them into a variety of graphical formats, and execute them | ||
| using an appropriate simulator. | ||
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| Some of the specific algorithms you can simulate with LIQ<i>Ui</i>|〉 are: | ||
| * Simple quantum teleportation | ||
| * Shor's factoring algorithm | ||
| * Quantum chemistry: computing the ground state energy of a molecule | ||
| * Quantum error correction | ||
| * Quantum associative memory (Ventura and Martinez, http://arxiv.org/abs/quant-ph/9807053) | ||
| * Quantum linear algebra (Harrow, Hassidim, and Lloyd, http://arxiv.org/abs/0811.3171) | ||
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| All of these algorithms, and many more, are included as samples with LIQ<i>Ui</i>|〉. | ||
| A video of a recent talk at [IQC](https://uwaterloo.ca/institute-for-quantum-computing/) on the reserach we've done with the simulator is at https://youtu.be/Q6M0ueXLTak?t=1s | ||
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| ## How Do I Get It? | ||
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| You can download the LIQ<i>Ui</i>|〉 executable, libraries, sample scripts, and documentation from this site. | ||
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| See the [Getting Started](GettingStarted.md) page for directions on how to download and start using LIQ<i>Ui</i>|〉. | ||
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| If you wish to use LIQ<i>Ui</i>|〉 on a Windows virtual machine, | ||
| see the [Using LIQ<i>Ui</i>|〉 on Microsoft Azure](AzureGuide.md) page for directions. | ||
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| ## How Do I Use It? | ||
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| See the [users' guide](https://msr-quarc.github.io/Liquid/LIQUiD.pdf) and the [full help documentation](https://msr-quarc.github.io/Liquid/). | ||
| The help may also be downloaded as a [single file](https://msr-quarc.github.io/Liquid/Liquid.chm), if desired. There is also a [tutorial video](http://research.microsoft.com/apps/video/default.aspx?id=258279) available that will take you through the basics. | ||
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| We've also posted seven short videos to the [LIQ<i>Ui</i>|〉 Research site](http://research.microsoft.com/en-us/projects/liquid/). These include: | ||
| * [Station Q Overview](http://research.microsoft.com/apps/video/default.aspx?id=263557) | ||
| * [LIQ<i>Ui</i>|〉 Simulator History](http://research.microsoft.com/apps/video/default.aspx?id=263605) | ||
| * [The Quantum Challenge](http://research.microsoft.com/apps/video/default.aspx?id=263584) | ||
| * [LIQ<i>Ui</i>|〉 Quantum Simulator QuickStart](http://research.microsoft.com/apps/video/default.aspx?id=263046) | ||
| * [LIQ<i>Ui</i>|〉 Quantum Error Correction](http://research.microsoft.com/apps/video/default.aspx?id=263597) | ||
| * [LIQ<i>Ui</i>|〉 Simulation Optimization](http://research.microsoft.com/apps/video/default.aspx?id=263612) | ||
| * [LIQ<i>Ui</i>|〉 Quantum Chemistry](http://research.microsoft.com/apps/video/default.aspx?id=263611) | ||
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| Note that this version of LIQ<i>Ui</i>|〉 is limited to a maximum of 23 physical qubits for full state vector simulation. | ||
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| If you run into a problem or have a question, you can [post an issue](https://github.com/msr-quarc/Liquid/issues). | ||
| If you have other feedback, you can contact the LIQ<i>Ui</i>|〉 team at [email protected]. | ||
| Please visit the new location for all things LIQ𝑈𝑖⏐〉. |