Project Grant 2210437

This $389,831 National Science Foundation project grant supports research at the University of Wisconsin-Madison to advance quantum error correction techniques using a dual species atomic qubit array. The university will demonstrate novel approaches to implementing error correction in a prototype quantum computer with cesium and rubidium atoms. Cesium atoms will encode data qubits while rubidium atoms will detect errors and enable correction. Researchers will transfer quantum information between species using two-species quantum gates and measure rubidium atoms to correct errors. They aim to demonstrate preparation of logical qubits using surface codes and the seven-qubit Steane code while studying coherence properties and multi-qubit gates. This work supports the NSF's Mathematical and Physical Sciences program (CFDA 47.049) to strengthen the nation's scientific enterprise through increased understanding of major problems in these fields such as developing reliable quantum computing.