I built Quantum4J because I couldn’t find a clean, dependency-free way to experiment with multi-qubit unitaries from Java. Most QC libraries target Python, so this is meant to bring quantum circuit construction and state-vector simulation to the JVM.
It includes:
- state-vector simulator (~25 qubits)
- standard gates (X, Y, Z, H, S, T, RX/RY/RZ, CX, CZ, SWAP, ISWAP, CCX)
- measurement + classical registers
- OpenQASM 2.0 exporter
Would love feedback on the architecture, gate engine, or ideas for what to add next.
Iam considering expanding Quantum4J into a more complete JVM quantum tooling ecosystem.
Interested in feedback from practitioners or researchers using Java in QC or simulation.
Example: QuantumCircuit.create(2).h(0).cx(0,1).measureAll();
Would love feedback on the architecture, gate engine, or ideas for what to add next. Iam considering expanding Quantum4J into a more complete JVM quantum tooling ecosystem. Interested in feedback from practitioners or researchers using Java in QC or simulation.