add citation info

Author: Roger-luo

CITATION.cff

@@ -0,0 +1,37 @@
+cff-version: 1.2.0
+message: "Cite this paper whenever you use Yao"
+authors:
+- family-names: "Luo"
+  given-names: "Xiu-Zhe"
+- family-names: "Liu"
+  given-names: "Jin-Guo"
+- family-names: "Pan"
+  given-names: "Zhang"
+- family-names: "Wang"
+  given-names: "Lei"
+title: "Yao.jl: Extensible, Efficient Framework for Quantum Algorithm Design"
+version: "v1"
+license: "MIT"
+doi: "10.22331/q-2020-10-11-341"
+date-released: 2020-10-11
+url: "https://yaoquantum.org"
+preferred-citation:
+  authors:
+    - family-names: "Luo"
+      given-names: "Xiu-Zhe"
+    - family-names: "Liu"
+      given-names: "Jin-Guo"
+    - family-names: "Pan"
+      given-names: "Zhang"
+    - family-names: "Wang"
+      given-names: "Lei"
+  doi: "10.22331/q-2020-10-11-341"
+  journal: "Quantum"
+  month: 10
+  pages: 341
+  title: "Yao.jl: Extensible, Efficient Framework for Quantum Algorithm Design"
+  type: article
+  volume: 4
+  year: 2020
+  publisher:
+    - name: "Verein zur F{\"{o}}rderung des Open Access Publizierens in den Quantenwissenschaften"

README.md

@@ -35,6 +35,26 @@ its AST according to its BNF specification described in [OpenQASM 2.0](https://g
 - [x] support for QASM 2.0
 - [ ] support for QASM 3.0
 
+## Cite Us
+
+If you use OpenQASM.jl in your research, please cite our paper:
+
+```bibtex
+@article{Luo2020yaojlextensible,
+  doi = {10.22331/q-2020-10-11-341},
+  url = {https://doi.org/10.22331/q-2020-10-11-341},
+  title = {Yao.jl: {E}xtensible, {E}fficient {F}ramework for {Q}uantum {A}lgorithm {D}esign},
+  author = {Luo, Xiu-Zhe and Liu, Jin-Guo and Zhang, Pan and Wang, Lei},
+  journal = {{Quantum}},
+  issn = {2521-327X},
+  publisher = {{Verein zur F{\"{o}}rderung des Open Access Publizierens in den Quantenwissenschaften}},
+  volume = {4},
+  pages = {341},
+  month = oct,
+  year = {2020}
+}
+```
+
 ## License
 
 OpenQASM is released under the MIT license.