Abstract: Neutral atom quantum computing is a rapidly developing field. Exploring new atomic species, such as alkaline earth atoms, provides additional opportunities for cooling and trapping, measurement, qubit manipulation, high-fidelity gates and quantum error correction. In this talk, I will present recent results from our group on implementing high-fidelity gates on nuclear spins encoded in metastable 171Yb atoms [1], including mid-circuit detection of gate errors that give rise to leakage out of the qubit space, using erasure conversion [2,3]. I will conclude by discussing several new directions including spectroscopy and modeling of 171Yb Rydberg states and interactions, and the construction of high-speed modulators for local gate addressing.
References
[1] S. Ma, G. Liu, P. Peng, B. Zhang, S. Jandura, J. Claes, A. P. Burgers, G. Pupillo, S. Puri, and J. D. Thompson, High-Fidelity Gates and Mid-Circuit Erasure Conversion in an Atomic Qubit, Nature 622, 7982 (2023).
[2] Y. Wu, S. Kolkowitz, S. Puri, and J. D. Thompson, Erasure Conversion for Fault-Tolerant Quantum Computing in Alkaline Earth Rydberg Atom Arrays, Nat. Commun. 13, 1 (2022).
[3] K. Sahay, J. Jin, J. Claes, J. D. Thompson, and S. Puri, High-Threshold Codes for Neutral-Atom Qubits with Biased Erasure Errors, Phys. Rev. X 13, 041013 (2023).