Sampling and Scrambling on a Chain of Superconducting Qubits
Sampling and Scrambling on a Chain of Superconducting Qubits
We study a circuit, the Josephson sampler, that embeds a real vector into an entangled state of n qubits, and optionally samples from it. We measure its fidelity and entanglement on the 16-qubit ibmqx5 chip. To assess its expressiveness, we also measure its ability to generate Haar random unitaries and …