Joakim Argillander

Ph.D. student, engineer (M.Sc. civilingenjör) and cybersecurity enthusiast. Taking every opportunity to delve into the latest and greatest in information coding and novel information security schemes.

Shoot me an email or contact me on any of the networks!


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Ph.D. Student in Electrical Engineering with Specialization in Information Coding

Division of Information Coding, Dept. of E.E., Linköping University, Linköping

Currently researching novel technologies in quantum communication and quantum information with applications in high-dimensional quantum key distribution. Also researching (quantum-) random number generation using novel semiconductor devices. Besides my research work I also participate in the teaching (as TA) of a master-level course in Computer Security.

September 2020- present

Master's Thesis Project

Division of Information Coding, Dept. of E.E., Linköping University, Linköping

Investigated methods for active phase compensation using FPGA's in a single-mode fiber-optic Mach-Zehnder interferometer for use in experiments pertaining to quantum information and quantum key distribution. Using feedback control I show that phase stability can be achieved over spatially multiplexed (linear polarisation modes) fibers as well.

January 2020 - June 2020

Garage Intern

Ericsson, Linköping

Developer and team leader at Ericsson’s innovation incubator programme, working with bleeding edge early phase projects in the IoT sphere in a small team consisting of other interns, Ericsson Innovators and external partners. My work tasks included, apart from regular development, sprint planning, product planning, customer contact and stakeholder communications. During the internship I also supervised summer interns.

April 2018 - January 2020

Bar Manager

Ryds Herrgård, Linköping

Volunteer work at one of the student union’s houses. My work there includes planning and structuring the bar work, menus and to some extent - inventory. It also includes educating the staff on alcohol policies, as well as quality and general liquor knowledge and techniques for working a bar. I was also a legally registered individual responsible for the serving of alcohol at this venue.

October 2015 - October 2018

Software Testing Intern

SensMaster Sdn/Bhd, Kota Damansara, Malaysia

I participated in the development of acceptance testing software for RFID equipment used for high-value asset tracking.

October 2013 - November 2013


Ph.D. Student in Electrical Engineering with Specialization in Information Coding

Division of Information Coding, Dept. of E.E., Linköping University, Linköping

Doctoral studies with courses in electrical engineering, quantum information and research methodology.

September 2020- present

Master of Science in Computer Science and Engineering (Civilingenjör)

Linköping University
Master’s profile in Secure Systems, with courses including Computer-, and Information Security and Cryptology. A solid background in both computer science (software testing, software engineering etc.) and hardware engineering (analogue and digital electronics, signals and systems, computer architecture, automatic control, etc.) has given me a foundation on which to further my multidisciplinary postgraduate studies. Alongside these courses are many project courses where theory is applied in practice which has taught me the specific construction quirks as well as methods for project execution.
August 2014 - June 2020

Technical Programme

ABB Industrial High School
Courses aimed towards technical design in subjects such as Mechatronics, CAD, PCB-design and manufacturing as well as Digital Electronics.
August 2011 - May 2014



Alarcón A., Gómez S., Spegel-Lexne D., Argillander J., Cariñe J., Cañas G., Lima G., Xavier G.B., All-in-Fiber Dynamically Reconfigurable Orbital Angular Momentum Mode Sorting. ACS Photonics., 10, 3700-3707, 2024

Argillander J., Alarcón A., Bao C., Kuang C., Gao F., Lima G. & Xavier G.B., Quantum random number generation based on a perovskite light emitting diode. Commun. Phys., 6, 157, 2023

Alarcón A., Argillander J., Spegel-Lexne, D., Xavier G.B., Dynamic Generation of Photonic Spatial Quantum States with an All-Fiber Platform. Opt. Express, 31, 10673-10683, 2023

Argillander J., Alarcón A., Xavier G.B., A tunable quantum random number generator based on a fiber-optical Sagnac interferometer. J. Opt., 24, 064010, 2022

Alarcón A., Argillander J., Lima G. & Xavier G. B., Few-mode fibre technology fine-tunes losses of quantum communication systems. Phys Rev. Appl., 16, 034018, 2021

Argillander, J., Active Phase Compensation in a Fiber-Optical Mach-Zehnder Interferometer. 2020 M.Sc. Thesis


Argillander J., Alarcón A., Bao C., Kuang C., Gao F., Lima G. & Xavier G.B., Secure quantum random number generation with perovskite photonics. Proc. SPIE 12911, Quantum Computing, Communication, and Simulation IV, 129111B (Quantum West 2024),

Argillander J., Alarcón A., Xavier G.B., All-fiber Dynamically Tunable Beamsplitter for Quantum Random Number Generators. 2022 Latin America Optics and Photonics Conference 2022, Presentation Th1A.2 (Optics in Quantum Science)

Alarcón A., Argillander J., Xavier G.B., Creating Spatial States of Light for Quantum Information with Photonic Lanterns. 2021 Applied Industrial Optics: Spectroscopy, Imaging and Metrology 2021, Presentation W2A.2

Other Contributions

Poster presentations
Argillander J., Alarcón A., Bao C., Kuang C., Gao F., Lima G. & Xavier G.B., Secure Quantum Randomness Using Perovskite LEDs. October 2022 Optics and Photonics in Sweden

Alarcón A., Argillander J., Spegel-Lexne, D., Xavier G.B., Quantum Random Number Generation Based on Spatial Modal Superposition over Few-Mode-Fibers. 2022 Frontiers in Optics,

Argillander J. Alarcón A. & Xavier G. B., Photonic Random Number Generation with Certified Privacy. October 2022 Optics and Photonics in Sweden

Argillander J. Alarcón A. & Xavier G. B., A tunable quantum random number generator based on a fiber-optical Sagnac interferometer. September 2022 Quantum 2022 Summer School on Quantum Optical Technologies in Apulia

Argillander J. Alarcón A. & Xavier G. B., Dynamically Tunable Beamsplitter for Quantum Random Number Generators. August 2022 VCQ Summer School 2022 - Concepts & Applications of Quantum Information

Argillander J. Quantum Cryptography and Communication. April 2024. Scientists Meet Cyber Companies - Cyberly cluster

Argillander J. Using a perovskite light emitting diode to build secure quantum random number generators. October 2023. Optics and Photonics in Sweden

Argillander J. Securing the Future with Quantum Technology. March 2023. Invited keynote speaker at Accenture Technology Event

Argillander J. Quantum Random Number Generators with Guaranteed Privacy. August 2022. ISY PhD Workshop 2022

Community Service

I regularly serve as a reviewer for papers (25+) in the following journals:

  • Physical Review Letters
  • Optica
  • Optics Express
  • Applied Optics
  • Physical Review Applied
  • Physica Scripta
  • New Journal of Physics
  • SoftwareX
on the topics of quantum key distribution, (measurement-device independent) quantum random number generation and (optical) high-speed data processing.


Swedish - native speaker
English - fluent
Finnish - conversational
German - basic knowledge


Programming Languages
  • FPGA (VHDL, Zynq 7000-series)
  • Embedded programming
  • PCB design (Altium Designer)
  • Electronics simulations
  • 3D modelling (Autodesk Inventor)
  • General electronics labwork (instrumentation, soldering, etc.)

  • Free-space (& fiber-) optics experimentation
  • Quantum optics
  • (Photonic-) quantum random number generation
  • FPGA control of electro-optical modulation
  • Coherent and incoherent (LEDs) photon sources for quantum information processing

Data analysis
  • Randomness extraction
  • Randomness testing
  • Signal processing
  • ...and much more!


  • TSIT01/TSIT02/726G81 Computer Security: Labs + guest lectures
  • TSIT12 Quantum Electronics and Quantum Optics: Labs
  • TSIT13 Quantum Communication: Labs
  • TSIN02 Internetworking : Labs

...and supervision of masters' and bachelors' theses!

Send me an email if you are looking for thesis projects - we are able to offer a wide variety of projects in electronics, computer science and optics for applications in quantum communication/information and information security.


My research interests are mainly related to topics in quantum random number generation and propagation of quantum states over optical fiber.

A selection of my interests are:
  • Measurement-device independent quantum random number generation
  • Quantum random number generation using alternative light sources
  • High-dimensional quantum communication over fiber

Apart from being a doctoral student, I am a keen alpine skier during the long Swedish winters, and an enjoyer of the occasional summertime tennis match.

When forced indoors, I am an electronics enthusiast that always has a project to tinker with. Following the latest news in cybersecurity and contributing to the maker-community occupies much of my spare time.