Welcome to the Quantum Optics Group at Wuhan Institute of Technology. We are studying the single-photon level quantum effects using spontaneous parametric downconversion and photon counting technique.
Our paper “Theoretical investigation of a spectrally pure-state generation from isomorphs of KDP crystal at near-infrared and telecom wavelengths” was published on Physics Review Applied 11.034067(2019)
In photonic quantum information processing, spectrally uncorrelated biphoton states generated from nonlinear crystals are a fundamental resource, but a rare one, and researchers have only used a few kinds of crystals to produce such biphoton states, over a limited wavelength range. This study reveals that crystals of a family of phosphate and arsenate salts similar to potassium dihydrogen phosphate (KDP) can be used to generate spectrally pure (as high as 98%) states from near-infrared to telecommunication wavelengths. The key is to engineer group-velocity matching.
Our paper “Error-disturbance trade-off in sequential quantum measurements” was published on Physical Review Letters 122, 090404(2019)
We derive a state-dependent error-disturbance trade-off based on a statistical distance in the sequential measurements of a pair of noncommutative observables and experimentally verify the relation with a photonic qubit system. We anticipate that this Letter may further stimulate the study on the quantum uncertainty principle and related applications in quantum measurements.
Our paper “Time-frequency duality of biphotons for quantum optical synthesis” was published on Physics Review Applied 10, 034011 (2018)
Our paper “Quantum manipulation of biphoton spectral distributions in a 2D frequency space toward arbitrary shaping of a biphoton wave packet” was published on Opt. Express 26, 21153 (2018)
Our paper “Extended Wiener-Khinchin theorem for quantum spectral analysis” was published on Optica.
Prof. Rui-Bo Jin
School of Science, Wuhan Institute of Technology
No. 1 Liufang Road, Jiangxia District, Wuhan City, Hubei Province, China