Liu, YuhongLi, JiaminHuo, NanLi, XiaoyingOu, Z. Y.2018-10-192018-10-192017Liu, Y., Li, J., Huo, N., Li, X., & Ou, Z. Y. (2017). Quantum enhanced joint measurement of two conjugate observables with an SU(1, 1) interferometer. In 2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR) (pp. 1–2). https://doi.org/10.1109/CLEOPR.2017.8118844https://hdl.handle.net/1805/17613We jointly measure the phase and amplitude modulation of an optical field with the newly developed SU(1,1) interferometer. We simultaneously achieve a signal-to-noise ratio improvement of 1.1 and 1 dB over the standard quantum limit in amplitude and phase measurement.enPublisher Policyquantum metrologyjoint measurementnonlinear interferometerConference proceedings