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SEN YANG RESEARCH LAB
DEPARTMENT OF PHYSICS
THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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A GROUP OF DIAMOND
We are working on fun projects of optics, quantum science and solid state physics.
And we have our special love with diamonds!
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Research Highlights
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Coherence enhancement of solid-state qubits

Solids state qubit based quantum sensing has emerged as one of the most promising quantum applications. We solve a bottle neck problem of short decoherent time of shallow implanted solid state qubit by a push pull method based on SPM instrumentation. The decoherence time increase dramatically, up to 20 folds. This method will pave the way of solid state quantum sensing.

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A Universal Method for Depositing Patterned Materials in-situ

The core of high-performance chip manufacturing is to pattern microscale and nanoscale material structures with high precision. We proposed and developed a single step laser direct writing technology. This method significantly simplifies electronics fabrication, especially for making quantum technology chips, flexible device and repairing circuits.

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Quantum Sensing of Superconductivity in Extreme Conditions

Material properties can change dramatically under pressure. We developed monitoring techniques based on nitrogen-vacancy (NV) centers in diamond. The NV centers can act as sensors because their energy levels and the associated spectra are sensitive to strain and magnetic fields. This enabled optical readout of a spatially resolved signal.

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Coherent Photon States Storage in a Single Nuclear Spin in Diamond

Long distance quantum communication requires photons and quantum nodes that comprise qubits for interaction with light, good memory capabilities and processing qubits for storage and manipulation of photons. Here, we demonstrate a high fidelity (~98%) coherent transfer of a photon polarisation state to a single solid state nuclear spin that has a coherence time of over 10 seconds. This nuclear spin based optical quantum memory demonstrated here paves the way towards an absorption based quantum repeater network.

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Latest News
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April 19, 2024
Our invention has won the Gold Medal in International Exhibition of Inventions Geneva
 
Feb 17, 2023
Our paper on quantum correlation is published in PRL.
 
Aug 26, 2022
Our paper on enhanced coherence is published in Nature Physics.
 
Aug 2, 2021
Our group moved into our new home in HKUST!
 
Oct 21, 2020
Our paper on our novel laser writing method is published in Nature Communications.
 
May 26, 2020
Alan won the C N Yang scholarship for postgraduate students.
 
Apr 29, 2020
Hoho won the Hong Kong PhD Fellowship.
 
Dec 13, 2019
Our paper on quantum sensing is published in Science.