Synthetic spins in microwave cavities

量子计算有望彻底改变量子化学、机器学习和密码学等许多领域。然而，有用的量子计算仍然遥不可及，因为当前的量子比特（量子位）有噪声，从而限制了量子信息可以保存的时间。量子纠错码可以通过将逻辑量子比特冗余编码到更大的状态空间中来解决这一问题。这允许在量子信息被破坏之前检测和纠正错误。一种有前途的量子纠错策略是将逻辑量子比特编码到微波腔中，这比其他类型的量子比特具有更长的寿命。在这个合作项目中，我们希望从理论上和实验上研究一类可以在微波腔中实现的新型量子纠错码。这些新代码承诺具有很高的纠错能力，并允许轻松实现一些逻辑操作。该项目将推动量子计算技术的发展，因此与致力于构建量子计算机的加拿大初创企业相关。

Quantum computing promises to revolutionize many areas such as quantum chemistry, machine learning and cryptography. However, useful quantum computations are still out of reach because current quantum bits (qubits) are noisy, thus limiting how long quantum information can be preserved. Quantum error-correction codes can solve this problem by redundantly encoding a logical qubit into a larger state space. This allows errors to be detected and corrected before the quantum information is corrupted. A promising strategy towards quantum error correction is to encode logical qubits into microwave cavities, which can exhibit longer lifetimes than other types of qubits. In this collaborative project, we want to investigate both theoretically and experimentally a new class of quantum error-correcting codes that can be implemented in microwave cavities. These new codes promise to have high error-correcting capabilities, and allow the easy implementation of several logical operations. This project will advance the state of the art for quantum computing, and is therefore relevant for Canadian start-ups working towards building a quantum computer.