Research Interests

fundamental quantum limits and applications in open quantum photonic systems


Quantum Coherence

  • Unveil different decoherence mechanisms
  • Preserve quantum coherence, e.g. superpositions and interferences


Quantum Correlation

  • Within quantum precision measurements, e.g. quantum squeezing.
  • Between hybrid quantum systems, e.g. quantum entanglement.


Quantum Connectivity

  • Quantum many-body correlations
  • Non-local quantum correlations, e.g. quantum networks.

Research Highlights

Quantum Optomechanics

Quantum Mechanics at Macroscopic Scale

What is the fundamental limit in quantum measurements? What is the boundary between the classical and quantum world? Can we observe quantum mechanical effects in the macroscopic world? The answer to these questions lies in the understanding of quantum mechanics at macroscopic scale via quantum precision measurements, e.g. quantum optomechanics. Quantum optomechanics is a field that studies the interaction between light (optical fields) and mechanical systems at the quantum level. This allows for measurement and control of quantum states of mechanical systems, enabling advancements in precision measurements, quantum information processing, and fundamental tests of quantum mechanics.
  • Laser Cooling of a Nanomechanical Oscillator to Its Zero-Point Energy, PRL 124, 173601 (2020).
  • Optical Backaction-Evading Measurement of a Mechanical Oscillator, Nature Communications 10, 1 (2019).
  • Two-Tone Optomechanical Instability and Its Fundamental Implications for Backaction-Evading Measurements, Phys. Rev. X 9, 041022 (2019).
  • Dissipative Quantum Feedback in Measurements Using a Parametrically Coupled Microcavity, PRX Quantum 3, 020309 (2022).
  • Floquet Dynamics in the Quantum Measurement of Mechanical Motion, PRA, 053852 (2019).
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    Quantum Electro-Optics:

    Bridging Quantum Photonic and Microwave Technologies

    Quantum electro-optics is the study of interactions between microwave and optical fields at the quantum level. This field is crucial because it enables the development of hybrid quantum systems that can link microwave quantum circuits, often used in quantum computing, with optical communication networks. Such integration allows for efficient transfer of quantum information between different platforms, enhancing quantum communication, sensing, and computation capabilities. It also facilitates the development of quantum transducers and contributes to the advancement of technologies like quantum internet and long-distance quantum communication.
  • A Cryogenic Electro-Optic Interconnect for Superconducting Devices, Nature Electronics 4, 5 (2021).
  • Quantum-Enabled Operation of a Microwave-Optical Interface, Nature Communications 13, 1 (2022).
  • Coherent Optical Control of a Superconducting Microwave Cavity via Electro-Optical Dynamical Back-Action, Nature Communications 14, 1 (2023).
  • Entangling Microwaves with Light, Science 380, 718 (2023).
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