Quantum

Trajectree: A quantum circuit simulator based on quantum trajectory methods

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Briefings

Trajectree is a quantum circuit simulator using state-saving partial execution to efficiently simulate noisy quantum circuits. It simulates standard benchmark circuits five times faster than Google's QSim and analyzes performance for quantum optical systems, including CHSH Bell test, entanglement swapping, and optical CNOT gate simulations.

Key points

• Trajectree uses a novel state-saving partial execution scheme to generate large numbers of Monte Carlo samples efficiently.
• Trajectree simulates standard benchmark noisy circuits over five times faster than Google's QSim.

Context

Trajectree is a new quantum trajectory-based simulator announced on arXiv:2610.24160, designed to efficiently simulate open quantum systems by saving partially executed trajectories. It benchmarks against Google's QSim and analyzes performance for quantum optical systems.

Limitations

Performance analysis is limited to standard benchmark circuits and quantum optical systems; specific results for other quantum systems remain unverified.

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