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Pasqal

Internship - Simulation of Atom Loss Events in QEC Circuits - W/M

On site

Palaiseau, France

Internship

21-11-2025

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Skills

Python Research Programming Recruitment python programming

Job Specifications

About Pasqal

PASQAL designs and develops Quantum Processing Units (QPUs) and associated software tools.
Our innovative technology enables us to address use cases that are currently beyond the reach of the most powerful supercomputers; these cases can concern industrial application challenges as well as fundamental science needs.
In addition to the exceptional computing power they provide, QPUs are highly energy efficient and will contribute to a significant reduction in the carbon footprint of the HPC industry. 

 Job Description

As an intern in our Quantum Error Correction team, you'll work on developing and implementing simulation tools for atom loss errors in fault-tolerant quantum circuits and circuit-level optimizations specific to neutral atom platforms.

In this context, your main missions will be :

Familiarize yourself with atom loss error models in neutral atom quantum
computers and their impact on fault-tolerant quantum computation.
Implement simulation frameworks for quantum error correction codes with
atom loss, including repetition codes, surface codes and color codes.
Analyze strategies for integrating loss detection into syndrome extraction
with minimal overhead for deep circuits.
Study delayed-erasure decoding techniques that leverage state-selective
readout to correct loss errors when precise locations are unknown.
Optimize quantum algorithms for Pasqal's neutral atom gate set and
resource requirements.

You'll work on atom loss mitigation protocols that enable robust fault-tolerant computation, whichmay include:

Circuit-level optimizations based on logical circuit structure (deep circuits vs.
teleportation-based algorithms).
Loss detection strategies tailored to different qubit loss fractions in the noise
model.
Teleportation-based loss mitigation for algorithms with frequent gate
teleportation.
Delayed-erasure decoder implementations compatible with general logical
circuits and various QEC codes.
Analysis of logical error rate as functions of loss fraction in experimentally
motivated error models.

About you

You are in Master 2 and looking for your end of study internship. You have been studying quantum physics during your studies. You are interested in doing an internship based on theoretical and numerical comprehension with coding activities in Python.

Hard skills:

Solid background in quantum mechanics, quantum information theory and
quantum error correction.
Strong understanding of quantum computing principles, fault-tolerant
quantum computation and topological codes.
Familiarity (a plus) with erasure errors, syndrome extraction, and decoding
algorithms.
Proficiency in Python programming.
Experience with quantum circuit simulation tools (Qiskit, Cirq, Stim, or
similar).

Soft skills:

Curious and motivated
Proactive mindset
Interest in cutting-edge research
Ability to drive in a fast-paced environment

What we offer

Brand new offices in Palaiseau, France
Type of contract : Internship
Swile card (ticket restaurant)

Recruitment process

An interview with our Talent Acquisition Specialist of 30 minutes.
An onsite interview with your tutor of 60 minutes.
A call with the manager of the QEC team on Teams for 30 minutes.
An offer!

PASQAL is an equal opportunity employer. We are committed to creating a diverse and inclusive workplace, as inclusion and diversity are essential to achieving our mission. We encourage applications from all qualified candidates, regardless of gender, ethnicity, age, religion or sexual orientation.

About the Company

We build Programmable Quantum Simulators and Quantum Computers made of 2D and 3D Atomic Arrays. Neutral atoms trapped in optical tweezers and addressed with laser beams are ideal indistinguishable quantum systems to realize superposition and entanglement, at the heart of powerful Quantum Information Processing. It is a highly scalable platform, benefiting from tens of years of development which has brought some of contemporary physics' most spectacular achievements: Bose-Einstein condensation, cavity quantum electrodynamics... Know more