Certified Randomness on Quantinuum H2-1
RCS-based certified randomness (challenge-response protocol) · Cryptography · 56 qubits · Quantinuum TKET, classical verification on NERSC Perlmutter / ORNL Frontier
Protocol benchmark generating certifiably random bits on the 56-qubit Quantinuum H2-1 trapped-ion computer. A client issues short random-circuit challenges, receives samples back from the untrusted server, and uses supercomputer-verified XEB scores to bound the entropy produced. The run certified 71,313 bits of min-entropy in a single session — a practical demonstration that quantum devices can deliver cryptographically meaningful randomness whose quality is backed by computational hardness assumptions rather than trust in the hardware.
Protocol benchmark generating certifiably random bits on the 56-qubit Quantinuum H2-1 trapped-ion computer. A client issues short random-circuit challenges, receives samples back from the untrusted server, and uses supercomputer-verified XEB scores to bound the entropy produced. The run certified 71,313 bits of min-entropy in a single session — a practical demonstration that quantum devices can deliver cryptographically meaningful randomness whose quality is backed by computational hardness assumptions rather than trust in the hardware.
First end-to-end device-independent-style randomness certification on a commercial quantum processor — turning RCS from a benchmark of classical-hardness into a cryptographic primitive.
Quantinuum H2-1 trapped-ion quantum computer (56 qubits)
Quantinuum TKET, classical verification on NERSC Perlmutter / ORNL Frontier