Kejie Fang
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Education
- Ph.D. Physics, Stanford University, 2013
Research Statement
Research in Fang group focuses on study of light-matter interactions and light manipulation at micro- and nano-scales. Guided by exploratory theories, research emphasis is given to device demonstrations and multi-scale integrations for applications in photonic quantum information processing and quantum metrology.
Post-Doctoral Research Opportunities
Our group has a postdoc position opening with a preference of experience in experimental quantum optics or optomechanics. Our research is backed by state-of-the-art fabrication facilities including the first and only 150 keV EBL in North America and quantum experiment equipment including dilution refrigerators.
Graduate Research Opportunities
We welcome highly motivated students to join our group. Our research intersects with several fields of science and engineering including quantum optics, nanophotonics, and NEMS, and offers rich opportunities for graduate researchers to be trained in device physics, fabrication, and measurements. Incoming or interested students should contact Prof. Fang (kfang3@illinois.edu) with a complete CV, accompanied by a short paragraph highlighting relevant practical experience and coursework.
Undergraduate Research Opportunities
We welcome undergraduate students interested in photonics to gain research experience in our group. Students should have preliminary course study in electromagnetism, photonics, etc.
Research Interests
- Quantum photonics
- Optomechanics
- Nanophotonics
Research Areas
- Condensed Matter Physics (experimental)
- Microcavity lasers and nanophotonics
- Microelectromechanical systems (MEMS)
- Microelectronics and Photonics
- Nano-electro mechanical systems (NEMS)
- Nano-photonics
- Nanotechnology
- Photonic integrated circuits (PICs)
- Quantum Information Science
- Semiconductor lasers and photonic devices
- Sensors
Research Topics
- Micro & nanoelectromechanical M/NEMS integrated systems
- Quantum optics, cryptography, information, and computing
Selected Articles in Journals
- K. Fang, Z. Yu, and S. Fan, “Photonic Aharonov-Bohm effect based on dynamic modulation", Physical Review Letters 108 153901 (2012).
- K. Fang, Z. Yu, and S. Fan, “Realizing effective magnetic field for photons by controlling the phase of dynamic modulation”, Nature Photonics 6, 782-787 (2012).
- K. Fang and S. Fan, "Controlling the flow of light using inhomogeneous effective gauge field that emerges from dynamic modulation", Physical Review Letters 111, 203901 (2013).
- K. Fang, V. M. Acosta, C. Santori, Z. Huang, K. M. Itoh, H. Watanabi, S. Shikata, and R. G. Beausoleil, "High-sensitivity magnetometry based on quantum beats in diamond nitrogen-vacancy centers", Physical Review Letters 110, 130802 (2013).
- E. Li, B. Eggleton, K. Fang, and S. Fan, “Photonic Aharonov–Bohm effect in photon–phonon interactions”, Nature Communications 5: 3225 (2014).
- L.D. Tzuang, K. Fang, P. Nussenzveig, S. Fan, and M. Lipson, “Nonreciprocal phase shift induced by an effective magnetic flux for light”, Nature Photonics 8, 701 (2014).
- K. Fang, M. H. Matheny, X. Luan, and O. Painter, “Optical transduction and routing of microwave phonons in cavity-optomechanical circuits”, Nature Photonics 10, 489-496 (2016).
- K. Fang, J. Luo, A. Metelmann, M. H. Matheny, F. Marquardt, A. A. Clerk, and O. Painter, “Generalized nonreciprocity in an optomechanical circuit via synthetic magnetism and reservoir engineering”, Nature Physics 13, 465–471 (2017).
- M. Zhao and K. Fang, Mechanical bound states in the continuum for macroscopic optomechanics, Opt. Express 27, 10138-10151 (2019).
- K. Fang and Y. Wang, Anomalous quantum Hall effect of light in Bloch-wave modulated photonic crystals, Phys. Rev. Lett. 122, 233904 (2019).
- M. Zhao, W. Kusolthossakul, and K. Fang, "High-efficiency fiber-to-chip interface for aluminum nitride quantum photonics", OSA Continuum 3, 952-960 (2020).
- H. Tong, S. Liu, M. Zhao, and K. Fang, "Observation of phonon trapping in the continuum with topological charges", Nature Communications 11, 5216 (2020).
- Y. Wang and K. Fang, "Continuous-variable graph states for quantum metrology", Phys. Rev. A 102, 052601 (2020).
Honors
- NSF CAREER (2020)
Recent Courses Taught
- ECE 110 - Introduction to Electronics
- ECE 398 KF - Quantum Systems I
- ECE 487 - Intro Quantum Electr for EEs
- ECE 498 KF (ECE 498 KF3, ECE 498 KF4) - Quantum Optics & Devices