In its first run on a real quantum processor, Quantum X Labs’ Qatacomb scheme successfully recovered an encrypted image using a 156-qubit machine, while an adversary without the key gained no usable information in the demonstration, illustrating a privacy guarantee designed to hold regardless of an adversary’s computing power Quantum X Labs Inc., a quantum technology company developing quantum computing, quantum sensing, quantum error correction and quantum applications technologies, reported the first demonstration of its Qatacomb quantum encryption scheme on commercial quantum hardware.
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The demonstration moves Qatacomb from theory to testing on a real device.
The intended recipient, holding the key, recovered the correct content for better than nine of every ten image elements and reconstructed the full image without error – despite the processor’s real noise.
The adversary’s best possible measurement, evaluated exactly, returned no usable advantage.