Tuesday, January 28 2020
14:00 - 15:15

Alladi Ramakrishnan Hall

Resource-efficient fault tolerant quantum computation with hybrid entanglement of light

Omkar Srikrishna

Seoul National University, South Korea

We propose an all-linear-optical scheme to ballistically generate a cluster state for measurement-based topological fault-tolerant quantum computation using hybrid photonic qubits entangled in a continuous-discrete domain. Availability of near-deterministic Bell-state measurements on hybrid qubits is exploited for the purpose. In the presence of photon losses, we show that our scheme leads to a significant enhancement in both tolerable photon-loss rate and resource overheads. More specifically, we report a photon-loss threshold of 3.3x10^{-3}, which is higher than those of known optical schemes under a reasonable error model.

Furthermore, resource overheads to achieve low logical error rate is significantly less by multiple orders of magnitude compared to other reported values in the literature.

Download as iCalendar