His main research interests are theoretical quantum optics and foundation of quantum mechanics with emphasis on quantum open systems, quantum decoherence, quantum trajectories, quantum information and quantum computing.
T. Yu and J.H. Eberly, "Phonon Decoherence of Quantum Entanglement: Robust and Fragile States", Phys. Rev. B 66, 193306 (2002).
T. Yu and I. C. Percival, "General Quantum Measurement", Physics Letter A 294, 59 (2001).
T. Yu, L, Diosi, N. Gisin and W. Strunz, "Post-Markov Master Equations for the Dynamics of Open Quantum Systems", Physics Letters A 265, 331 (2000).
W. Strunz, L. Diosi, N. Gisin and T. Yu, "Quantum Trajectories for Brownian Motion", Physical Review Letters 83, 4909(1999).
T. Yu, L. Diosi, N. Gisin and W. Strunz, "Non-Markovian Quantum State Diffusion: Perturbation Approach", Physical Review A 60, 91 (1999).