Robin Camphausen

We present a novel entanglement-based protocol for chosen-input 1-out-of-2 Quantum Oblivious Transfer (QOT) together with a practical experimental implementation. The protocol relies on the non-commuting encoding properties of Bell states, and it requires minimal interaction between parties, with quantum communication in only one direction. Under the assumptions of the Noisy Quantum Storage Model, the protocol provides epsilon-secure OT that can serve as a primitive for two-party computation schemes such as Yao's garbled circuits. For standard security parameters, our proof-of-principle experiment achieves OT-key generation rates of 0.225 bits per second.