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.

Recent News


Our paper “Mid-infrared spectrally-uncorrelated biphotons generation from doped PPLN: a theoretical investigation” (arXiv:2012.09352) was accepted by Optics Express.

Our paper “Counter-propagating spectrally uncorrelated biphotons at 1550 nm generated from periodically poled MTiOXO4 (M = K, Rb, Cs; X = P, As)” (arXiv: arXiv:2009.13321) was published on  JOSAB.

Our paper “Spectrally uncorrelated biphotons generated from `the family of BBO crystal’” (arXiv: 1912.02497) was published on  Quantum Engineering.


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.

March 2019

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.

September 2018

Our paper  “Time-frequency duality of biphotons for quantum optical synthesis”  was published on Physics Review Applied 10, 034011 (2018)

August 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)

January 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

Postcode: 430205

Email: jrbqyj@gmail.com; jin@wit.edu.cn