講演情報
[7a-N204-5]512-Fold Super Resolved Rotation Sensing via Four-Photon High Dimensional Structured Light
〇(D)Guy Tshuva1, Ofir Yesharim1, Hagai Eisenberg2, Ady Arie1 (1.Tel Aviv Univ., 2.Hebrew Univ.)
キーワード：
Quantum Sensing、Structured light
We demonstrate the first rotation sensor that simultaneously exploits multi-photon entanglement and very high-order structured light. A bright SPDC source delivers four-photon NOON states to a Mach–Zehnder interferometer containing spiral phase plates of opposite charges (±ℓ). A tiny rotation θ of the first plate impresses a phase 4ℓθ on the state. With ℓ = 128 and a photon-statistics PID loop for phase lock, we resolve fringes with a record super-resolution factor N × ℓ = 512 i.e., 512-fold beyond the classical limit. The scheme needs only two passive plates and four SNSPDs, keeping loss low and hardware simple. Our scalable platform paves the way for ultra-precise inertial, magnetic-field, and index sensors that harness both high photon number and high spatial dimension.