Friday Quantum Seminar: Jiayao Zhao
Description
Title: Â Logical Source of Photonic Entanglement
Speaker: Â Jiayao Zhao (QuICS)
Date & Time: Â November 20, 2026, 12:00pm
Where to Attend: Â ATL 2400
Producing large-scale entangled photonic states is central to quantum technologies. Deterministic emitter-based schemes that sequentially generate entangled photons have emerged as a leading route, but errors accumulated in the emitters fundamentally limit the attainable size of the resulting photonic states. We incorporate quantum error correction (QEC) into such a deterministic photonic source, actively protecting it during entanglement generation. We consider a circuit-QED architecture in which a repetition code of stabilized cat cavities stores the logical state while a transmon emits photonic qubits. We analyze the generation of both photonic GHZ and cluster states using this source and show that error correction can considerably improve photonic-state fidelity in experimentally relevant regimes. These results demonstrate that matter-based QEC can realize an error-resilient logical photon source, enabling more scalable generation of photonic entanglement.
Pizza and drinks will be served after the seminar in ATL 2117.
Speaker: Â Jiayao Zhao (QuICS)
Date & Time: Â November 20, 2026, 12:00pm
Where to Attend: Â ATL 2400
Producing large-scale entangled photonic states is central to quantum technologies. Deterministic emitter-based schemes that sequentially generate entangled photons have emerged as a leading route, but errors accumulated in the emitters fundamentally limit the attainable size of the resulting photonic states. We incorporate quantum error correction (QEC) into such a deterministic photonic source, actively protecting it during entanglement generation. We consider a circuit-QED architecture in which a repetition code of stabilized cat cavities stores the logical state while a transmon emits photonic qubits. We analyze the generation of both photonic GHZ and cluster states using this source and show that error correction can considerably improve photonic-state fidelity in experimentally relevant regimes. These results demonstrate that matter-based QEC can realize an error-resilient logical photon source, enabling more scalable generation of photonic entanglement.
Pizza and drinks will be served after the seminar in ATL 2117.