--- title: With Ansys and CADFEM for maximum performance of quantum networks description: The RF-photonic connectors from the startup Miraex increase the performance of quantum computers. They are optimized through simulations with Ansys. image: https://blog.cadfem.net/hubfs/02_TOPICS/GLOBAL_Blog/Blog%20Artikel%202025/Teaser_QuantumTech-Miraex_Blog.jpg --- English [Skip to the main content.](https://blog.cadfem.net/en/with-ansys-and-cadfem-for-maximum-performance-of-quantum-networks#main-content) [![www.cadfem.net](https://blog.cadfem.net/hubfs/01_BASIC/Logos/New%20CADFEM%20Logo/CADFEM_Logo_blue_sRGB_ohne%20Schutzzone%201.svg "www.cadfem.net")](https://blog.cadfem.net/de?c_red=1) [![www.cadfem.net](https://blog.cadfem.net/hubfs/01_BASIC/Logos/New%20CADFEM%20Logo/CADFEM_Logo_blue_sRGB_ohne%20Schutzzone%201.svg "www.cadfem.net")](https://blog.cadfem.net/de?c_red=1) [![](https://blog.cadfem.net/hubfs/Icons/chat.svg) Directcontact](https://blog.cadfem.net/en/with-ansys-and-cadfem-for-maximum-performance-of-quantum-networks#footer-section-contact) - [cadfem.net](https://www.cadfem.net/) - [Cadfem World Conference](https://www.cadfem.net/de/cadfem-informiert/veranstaltungen/cadfem-world-conference.html) - [Ansys Version Dessai](https://www.cadfem.net/fr/nos-solutions/logiciels-de-simulation-ansys-la-gamme-de-produits/ansys-produits-version-dessai.html) - [English](https://blog.cadfem.net/en/with-ansys-and-cadfem-for-maximum-performance-of-quantum-networks) - [Deutsch](https://blog.cadfem.net/de/mit-ansys-und-cadfem-zur-hoechstleistung-von-quantennetzwerken) - [Français](https://blog.cadfem.net/fr/ansys-et-cadfem-pour-une-performance-maximale-des-reseaux-quantiques) Toggle Menu - [English](https://blog.cadfem.net/en/with-ansys-and-cadfem-for-maximum-performance-of-quantum-networks) - [Deutsch](https://blog.cadfem.net/de/mit-ansys-und-cadfem-zur-hoechstleistung-von-quantennetzwerken) - [Français](https://blog.cadfem.net/fr/ansys-et-cadfem-pour-une-performance-maximale-des-reseaux-quantiques) Toggle Menu - [cadfem.net](https://www.cadfem.net/) - [Cadfem World Conference](https://www.cadfem.net/de/cadfem-informiert/veranstaltungen/cadfem-world-conference.html) - [Ansys Version Dessai](https://www.cadfem.net/fr/nos-solutions/logiciels-de-simulation-ansys-la-gamme-de-produits/ansys-produits-version-dessai.html) [Back to overview](https://blog.cadfem.net/en) # With Ansys and CADFEM for maximum performance of quantum networks [Alexander Kunz](https://blog.cadfem.net/en/author/alexander-kunz) 11.02.2025 [Optics & Photonics](https://blog.cadfem.net/en/tag/optics-photonics) [Electronics](https://blog.cadfem.net/en/tag/electronics) [Use Case](https://blog.cadfem.net/en/tag/use-case) LinkedIn Copy link ### Game changing RF-photonic interconnects for Quantum computers Miraex develops RF-photonic interconnects that provide a bridge between the microwave and optical portions of the electromagnetic spectrum. These sophisticated interconnects require a careful design that balances circuit and material losses with coupling strength. Simulations with Ansys tools were used to optimize the design of the prototypes for fabrication. ![Header_QuantumTech-Miraex_Blog](https://blog.cadfem.net/hs-fs/hubfs/02_TOPICS/GLOBAL_Blog/Blog%20Artikel%202025/Header_QuantumTech-Miraex_Blog.jpg?width=1093&height=410&name=Header_QuantumTech-Miraex_Blog.jpg) ``` Game changer for drastically improved performance of quantum computers | © Miraex   ``` Microwave technologies are at the heart of some of the most promising quantum computing technologies today. But at the same time, the microwave domain is the biggest bottleneck for the scalability of these systems. By bridging to the optical domain, where applicable, these disadvantages can be bypassed by using optical interconnects, e.g. for connecting quantum computers together in a cluster through optical fibers. This can boost their scalability dramatically. This can be thought of as analogous to the optical MPI technology used in classical computing clusters. ## The Miraex Plattform Miraex, a Startup founded 2019 in Lausanne, Switzerland, develops RF-photonic devices for interconnecting quantum computers and bridging quantum networks, letting them scale to reach their maximum potential. The Miraex platform uses nanofabricated RF and optical circuits to guide light into structures where photons of different frequencies interact. These devices can convert single photon signals between microwave and optical frequencies. However, their operation requires a careful design that balances circuit and material losses with coupling strength. ## Let's Simulate: Quantum Computing and Photonics Discover in this “Let's Simulate” how advancements in RF and photonics influence modern simulation techniques and how quantum effects come into play. [Watch now for free!](https://www.cadfem.net/en/shop/professional-development/lets-simulate/let-s-simulate-knowledge-building-blocks-for-the-production-of-quantum-computers-21801.html?c_red=1) ![quantum_computing](https://blog.cadfem.net/hubfs/topics/GLOBAL_Blog/Seminar%20Teaser/quantum_computing.jpg) ## Design refinement with Ansys simulations To refine the design of initial prototypes for fabrication, the Miraex team decided to rely on Ansys tools and CADFEM know-how: Ansys HFSS was chosen to design and characterize microwave circuit elements, while Ansys Lumerical was used to characterize the corresponding optical waveguides. The data was matched together to find an optimal design. ![QuantumTech-Miraex_Blog_Propagation-velocity](https://blog.cadfem.net/hs-fs/hubfs/02_TOPICS/GLOBAL_Blog/Seminar%20Teaser/QuantumTech-Miraex_Blog_Propagation-velocity.jpg?width=797&height=450&name=QuantumTech-Miraex_Blog_Propagation-velocity.jpg) ``` Propagation velocity in the circuits calculated with Ansys HFSS | © Miraex ``` More than 15 **High Tech Companies** from the quantum technology sector rely on the the use of Ansys with the support from CADFEM. ## Identifying the right balance For optimal performance of quantum interconnects, circuit loss must be balanced with the interaction strength over the length of the device. Ansys Lumerical was used to model optical waveguide modes and extract their propagation velocity, which must match the propagation velocity in the electrical circuits determined by Ansys HFSS. Lumerical also provided information about optical plasmonic loss. Electrostatic simulations in Ansys Maxwell produced the electric field’s overlap with the optical mode, giving an interaction strength. By performing a parametric sweep over geometry, a suitable balance between optical loss and interaction strength was identified. ### Ansys software for quantum technology simulation tasks - #### Ansys HFSS ![Ansys_HFSS_Thumb](https://blog.cadfem.net/hs-fs/hubfs/02_TOPICS/GLOBAL_Blog/Seminar%20Teaser/Ansys_HFSS_Thumb.png?width=300&height=169&name=Ansys_HFSS_Thumb.png) The industry standard for determining the radiation and transmission behavior of RF/microwave circuit components. [More info](https://www.cadfem.net/de/unsere-loesungen/ansys-simulationssoftware-die-produktfamilie/ansys-elektromagnetik/ansys-hfss.html?c_red=1) - #### Ansys Maxwell ![Ansys_Maxwell_Thumb](https://blog.cadfem.net/hs-fs/hubfs/02_TOPICS/GLOBAL_Blog/Seminar%20Teaser/Ansys_Maxwell_Thumb.png?width=300&height=169&name=Ansys_Maxwell_Thumb.png) The simulation tool to analyze and optimize electrostatic electromagnetic field distributions. [More info](https://www.cadfem.net/en/our-solutions/ansys-simulation-software-the-product-family/ansys-electromagnetics/ansys-maxwell.html?c_red=1) - #### Ansys Lumerical ![Teaser_Optics_Lumerical](https://blog.cadfem.net/hs-fs/hubfs/02_TOPICS/GLOBAL_Blog/Blog%20Artikel%202025/Teaser_Optics_Lumerical.jpg?width=300&height=169&name=Teaser_Optics_Lumerical.jpg) Family of simulation tools to analyze the properties of photonic sources and waveguides. [More info](https://www.cadfem.net/en/our-solutions/ansys-simulation-software-the-product-family/ansys-optical.html?c_red=1#c196199) ## Ansys HFSS Industry standard for determining the radiation and transmission behavior of high-frequency electromagnetic fields. [More info](https://www.cadfem.net/en/our-solutions/ansys-simulation-software-the-product-family/ansys-electromagnetics/ansys-hfss.html?c_red=1) ![Ansys_HFSS_Thumb](https://blog.cadfem.net/hubfs/02_TOPICS/GLOBAL_Blog/Seminar%20Teaser/Ansys_HFSS_Thumb.png) ## Optical simulation Precision & efficiency combined. Find out in our webinars and further information how you can develop your optical designs with maximum precision. [Learn more](https://resources.cadfem.net/de/optische-simulation) ![Optics_LP](https://blog.cadfem.net/hubfs/05_CAMPAIGNS/2024/24_DE_Optik%20Kampagne/Optics_LP.png) ## Drastic complexity and time reduction The cross-domain design performance, achieved by concentrating on individual solvers in parallel streams, leads to a drastic reduction in complexity and preparation time. Furthermore, the extensive Pythonic scripting capabilities of the different Ansys products facilitated efficient data postprocessing and exchange of results.  These enhancements contribute to achieve a first-time-right design, faster time to market, and the ability to drive innovation within the business landscape. ![](https://blog.cadfem.net/hubfs/02_TOPICS/GLOBAL_Blog/Autoren%20Bilder/Portrait_ASH_Blog.jpg) ### Author ##### Alexander Shalaby CADFEM UK +49(0)8092 7005-953 [ashalaby@cadfem.de](mailto:ashalaby@cadfem.de) ![](https://blog.cadfem.net/hubfs/03-Germany/TOPICS/GLOBAL_Blog/Autoren%20Bilder/Portrait_AK_Blog.jpg) ### Co-Author ##### Alexander Kunz CADFEM Germany GmbH +49 (0)8092 7005-889 [akunz@cadfem.de](mailto:akunz@cadfem.de) ![](https://blog.cadfem.net/hubfs/03-Germany/TOPICS/GLOBAL_Blog/Autoren%20Bilder/Portrait_KKU_Blog.jpg) ### Editorial ##### **Klaus Kuboth** CADFEM Germany GmbH +49 (0)8092 7005-279 [kkuboth@cadfem.de](mailto:kkuboth@cadfem.de) Contact the editorial team Subscribe to newsletter ## You may also find these articles of interest. 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