structured beams
In the ever-expanding field of optical research, the creation and manipulation of structured light beams have catalyzed a multitude of scientific and technological advancements. These beams, characterized by their unique spatial configurations, are key to innovations in fields such as imaging, communication, and quantum computation. One promising avenue for generating these structured beams is through the design of novel optical cavities. Moreover, harnessing the potential of nonlinear optics introduces an additional layer of versatility, enabling the utilization of these light sources across a broad spectral range from ultraviolet to infrared. The ensuing work concentrates on exploring these innovative methods, aiming to broaden our understanding and control of structured light for future applications.
- Orbital angular momentum exchange in a picosecond optical parametric oscillator, Opt. Lett. 43, 3606-3609 (2018).
- Multi-structured-beam optical parametric oscillator, Opt. Express 28, 21650-21658 (2020).
- Tunable vector-vortex beam optical parametric oscillator, Sci Rep 9, 9578 (2019).
programmable photonic integrated circuits
While the generation and application of structured light have seen considerable advancements, the precise measurement and decomposition of these complex spatial modes remain a formidable challenge. Addressing this, our new approach leverages a novel programmable photonic processor, designed for high-quality spatial mode generation and real-time, comprehensive analysis of structured light. This integrated system not only generates a broad spectrum of spatial modes but also decomposes incoming structured light into its constituent modes, simultaneously analyzing amplitude, phase, and polarization. This represents a significant step towards a fully integrated, versatile tool for both generating and characterizing complex light fields.
- Photonic integrated processor for structured light detection and distinction, Commun Phys 6, 369 (2023).
- Generating free-space structured light with programmable integrated photonics, Nature Photonics (2024).
quantum optics
Quantum sensing and metrology have emerged as pivotal fields in the advancement of precision measurement technologies. Central to these developments is the leveraging of single-photon sources, which offer unprecedented sensitivity and resolution. The Hong-Ou-Mandel (HOM) interference, a quintessential quantum phenomenon observed when two identical photons enter a beam splitter, serving as a foundational tool in quantum metrology. By monitoring the coincidence counts of photon pairs, it is possible to detect minute variations in optical path length — as small as tens of nanometers — enabling high-precision measurements in various scientific and industrial applications.
- Near-Video Frame Rate Quantum Sensing Using Hong–Ou–Mandel Interferometry, Adv. Quantum Tech. (2024).
- Imaging inspired characterization of single photons carrying orbital angular momentum, AVS Quantum Sci. 4, 015001 (2022).