Quantum Trajectory Simulation Intern — Cat Qubits

Entangled Future; Paris; Hybrid; EUR 13,000 - 17,000; Full time

Benefits offered by this job

Half transportation cost coverage

Meal vouchers (Swile)

Fully equipped and regularly stocked-k

Kitchen access

Job summary

Alice & Bob in Paris is seeking a Research Intern for Efficient Cat Qubit Simulation in the Prototype team. The role targets an intern-level, full-time position starting February 2027 for six months, focusing on estimating error probabilities in multi-mode quantum operations.

You will work on combining tensor-network techniques with quantum trajectories, verify robustness, and document your findings for reuse within the team.

Qualifications

• Master's degree in progress in physics, quantum engineering, applied mathematics or related field.
• Proficient in English.
• Good understanding of quantum mechanics and open quantum systems (density matrices, Lindblad master equations).
• Programming experience in Python or Julia for scientific computing.

Responsibilities

• Combine tensor-network representations with quantum trajectory unravelings of the Lindblad master equation to simulate multi-mode operations.
• Verify numerical robustness of simulations (Hilbert-space and bond-dimension truncation, solver stability and precision).
• Extract quantitative estimates of error probabilities and rates from simulated trajectories.
• Assess statistical reliability of estimates and their parameter dependence.
• Compare estimates against exact master-equation results where available and against theoretical predictions.
• Quantify computational cost and scaling relative to standard density-matrix simulations.
• Analyse simulated trajectories to characterize underlying error mechanisms.
• Document methods, code and results for reuse by the team.
• Present progress in regular team meetings and propose extensions to multi-qubit operations.

Skills

English proficiency

Quantum mechanics

Python

Julia

Education

Master's degree in progress

Tools

Python

Julia

Job description

Alice & Bob in Paris is seeking a Research Intern for Efficient Cat Qubit Simulation in the Prototype team. The role targets an intern-level, full-time position starting February 2027 for six months, focusing on estimating error probabilities in multi-mode quantum operations.

You will work on combining tensor-network techniques with quantum trajectories, verify robustness, and document your findings for reuse within the team.