The Royer Lab is a theoretical research group focused on topics related to quantum information with harmonic oscillators.
Quantum error correction : bosonic codes
Quantum states are inherently fragile and highly susceptible to decoherence. To preserve quantum information during computation, it is essential to correct the errors that affect quantum devices. This is achieved using error-correcting codes, which redundantly encode quantum information.
At the Royer Lab, we specialize in bosonic codes, where qubits are encoded in harmonic oscillators. This approach makes highly efficient use of physical resources: a single harmonic oscillator—such as a microwave cavity—can encode a protected qubit.
Our research focuses on developing new bosonic codes, optimizing their control, and advancing the theoretical tools necessary for their practical implementation.
Quantum metrology
Error correction allows for the precise identification of errors affecting a quantum system. But what if, conversely, errors are signals to be measured? At the Royer Lab, we also explore whether the tools developed for error correction can be repurposed to enhance detection methods. See here if you want to know more.
Simulation of quantum systems
Classical simulations play a crucial role in testing theoretical ideas and modeling real-world quantum devices. Yet, as these systems grow in complexity, so does the computational cost of simulating them. At the Royer Lab, we develop and explore advanced numerical strategies to make these simulations more efficient and scalable—paving the way for deeper insights into quantum technologies.