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munich-quantum-toolkit/ddsim

MQT DDSIM - A quantum circuit simulator based on decision diagrams written in C++

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What it does

MQT DDSIM is a software tool that lets researchers and engineers test and run quantum computing programs on regular computers, without needing access to actual quantum hardware. It works by using a clever mathematical shortcut (called decision diagrams) to simulate how a quantum computer would behave, making it faster and less memory-intensive than traditional approaches.

Why it matters

As quantum computing moves closer to commercial viability, teams building quantum software need ways to develop and test their products without expensive hardware access — this tool fills that gap and lowers the barrier to entry. For founders and investors, the backing of two major European research institutions (JKU and TUM) and its integration with the widely-used Qiskit platform signal that this is serious, production-leaning infrastructure in a space attracting significant capital.

15Active

On the radar — signal detected

Stars
158
Forks
38
Contributors
17
Language
C++

Score updated Feb 23, 2026

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