QUEST Lab
Welcome to the Quantum Engineering and Simulation Theory (QUEST) Lab in the Department of Electrical & Computer Engineering and the Department of Computer Science at NC State University in Raleigh, North Carolina!
We strive to push the frontiers of quantum information science and its transformative impact across science and engineering. Our research spans quantum algorithms and simulation, hybrid continuous-discrete-variable quantum computing, and quantum engineering, with applications ranging from simulating complex physical and chemical systems to advancing quantum signal processing and error-resilient computation.
We are always looking for motivated students and scholars to join us!
News
| May 12, 2026 | Congratulations to Fucheng for his Concatenated dual displacement code for continuous-variable quantum error correction published in Physical Review Research! This is a new concatenated logical oscillator code that can correct arbitrary random displacement errors. |
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| May 11, 2026 | Our paper Quantum Differential Equation Solver via Hybrid Oscillator-Qubit Linear Combination of Hamiltonian Simulations is now on arXiv! This work uses quantum oscillators as an integrator to solve ordinary differential equations. We show superalgebraic to subexponential converge in the simulation error. Kudos to Elin and collaborators from PNNL! |
| Apr 29, 2026 | Our paper HyPulse: A Pulse Synthesis Framework for Hybrid Qubit-Oscillator Gates on Trapped-Ion Platform is now on arXiv! This is a software pulse library for trapped ions to realize hybrid CV-DV gates. |
| Apr 14, 2026 | Our paper Scalable Qumode-Qubit State Transfer and Fast-forward Quantum Fourier Transform using Oscillators is now on arXiv! We achieved an exponential runtime speedup for state transfer and quantum Fourier transform in hybrid CV-DV quantum processors. |
| Mar 27, 2026 | Our paper Efficient Qubit Simulation of Hybrid Oscillator-Qubit Quantum Computation is now on arXiv! We established a framework for simulating hybrid oscillator-qubit quantum processors on qubit-only systems through position encoding with only a mild polylogarithmic overhead in circuit volume – an exponentially tigher upper bound on the advantage of CV-DV quantum computers as compared to DV only ones for generic computation. |
| Mar 25, 2026 | Congratulations to Lu Xi for his U(N) QSP paper accepted to Quantum, and Shariful and Joel for their paper on fermi-boson mixed QBE accepted to the Special Collection: Quantum Embedding for Molecules and Materials in the Journal of Chemical Physics! |
| Mar 1, 2026 | Congratulations to Raghav and the CV-DV team for the submission of Quantum simulation of massive Thirring and Gross–Neveu models for arbitrary number of flavors! |
| Feb 28, 2026 | The QUEST group welcome Dr. Cheng Chu joining us as a postdoctorial researcher in our Center for Hybrid Quantum Computing! Also, welcome undergraduate students Nidhi Grover (REU), Samuel Firmansyah (REU), Brandon Wright, Petr Shvarev, Charanjit Dhanasekar, and Vignesh Rajesh joining us to explore various aspects of quantum computing! |
| Feb 28, 2026 | Our work Compile-once block encodings for masked similarity-transformed effective Hamiltonians is now on arXiv! |
| Jan 22, 2026 | Our work Robust Quantum Algorithmic Binary Decision-Making on Displacement Signals is now on arXiv! We developed a new quantum detection protocol that can perform single-shot detection on arbitrary features of Gaussian signals on bosonic modes. We also discovered connections between frame theory and these quantum sensing protocols. |