(permanent position, 40 hour per week)

Contact: (819) 975-4654, [email protected]

About Nord Quantique

At Nord Quantique, we strive to build impactful technology by relentlessly pushing our understanding of quantum science. We are an interdisciplinary team of scientists, engineers, innovators, builders, and enthusiasts on a mission to make quantum computing a reality. Our quantum processors are designed to reduce errors in quantum computation to facilitate long-term scaling toward fully‑fledged quantum computers. We believe it is our responsibility to deliver this transformative technology for the greater good of society.

Located at the heart of the beautiful Eastern Townships region in the province of Quebec, Canada, we develop our technology in the vibrant quantum ecosystem of Sherbrooke. Leaning on more than a decade of vertical integration of quantum hardware, we are leveraging a comprehensive pool of quantum technology and micro‑electronic infrastructure to deploy our quantum‑computing technology.

Our current needs

Our Theory and Simulations team develops the models and numerical tools that connect device physics, quantum‑control protocols, error correction, and logical performance. These capabilities guide the design of our hardware and are central to evaluating and improving our quantum‑computing architecture.

We are seeking a Senior Computational Quantum Physicist to lead the development of the next generation of simulation methods for bosonic quantum error correction.

Your mission will be to develop scalable, rigorously validated simulation backends that enable higher‑energy multimode simulations and reliable estimation of ultra‑low logical error rates.





Meeting these goals will require new representations and algorithms rather than incremental optimization alone. Promising directions include tensor networks, rare‑event sampling, and logical‑level or near‑Clifford simulation methods.

You will help define the technical roadmap, develop and validate new numerical approaches, and shape the architecture of the simulation codebase. You will work closely with other theorists as well as our compiler team.

We expect to hire candidates with complementary expertise. You are not expected to specialize in every area described below, but should bring deep expertise in at least one and be able to collaborate effectively across the others.

Specialization tracks

Strong candidates will typically bring depth in one or more of the following areas:

Tensor‑network and compressed bosonic simulation

Develop scalable methods for simulating multimode bosonic systems using tensor networks and related compression techniques. Explore their application to larger systems, higher‑energy regimes, and both pure‑ and mixed‑state dynamics, while establishing their accuracy, computational advantages, and regimes of applicability.

Logical‑level and effective‑model simulation

Develop productive models in which the full bosonic state is replaced by an encoded logical qubit together with a controlled number of residual, gauge, or leakage degrees of freedom.





Possible approaches include Zak‑basis subsystem decompositions, effective logical‑channel models, and extended‑stabilizer simulation methods such as Pauli+. Determine which bosonic effects, correlations, and non‑Pauli processes must be retained, establish the regimes in which each effective model remains valid, and benchmark these models systematically against full bosonic simulations.

Advanced Monte Carlo methods

Develop variance‑reduction and rare‑event sampling techniques for logical‑error‑rate estimation. Relevant approaches may include importance sampling, biased trajectory ensembles, splitting methods, sequential Monte Carlo, Markov chain Monte Carlo, and related techniques.

High‑performance scientific software

Design and maintain a modular simulation platform that can support multiple physical representations and numerical backends through a consistent Python interface. Improve performance using established high‑performance numerical libraries, accelerator‑aware frameworks, parallelism, compilation, batching, and efficient data structures. Work with the compiler team to define robust interfaces between compiled quantum programs, physical noise models, simulation backends, and analysis workflows.

Working in close collaboration with the Theory and Simulations Team, the candidate will (depending on your area of expertise)

- Lead the design and implementation of scalable simulation algorithms for bosonic quantum systems and quantum error‑correcting codes.
- Establish the technical roadmap for the evolution of simulation capabilities.
- Extend simulations to larger numbers of modes, higher photon numbers, and more demanding logical‑error‑rate regimes.
- Dev

📌 Senior Computational Quantum Physicist (Sherbrooke)
🏢 Nord Quantique
📍 Sherbrooke