3 papers
quant-ph2025
Error-structure-tailored early fault-tolerant quantum computing
Pei Zeng, Guo Zheng, Qian Xu +1
Fault tolerance is widely regarded as indispensable for achieving scalable and reliable quantum computing. However, the spacetime overhead required for fault-tolerant quantum compu…
quant-ph2025
Optimized four-qubit quantum error correcting code for amplitude damping channel
Xuanhui Mao, Qian Xu, Liang Jiang
Quantum error correction (QEC) is essential for reliable quantum information processing. Targeting a particular error channel, both the encoding and the recovery channel can be opt…
quant-ph2025
Dark spin-cats as biased qubits
Andreas Kruckenhauser, Ming Yuan, Han Zheng +8
We present a biased atomic qubit, universally implementable across all atomic platforms, encoded as a `spin-cat' within ground state Zeeman levels. The key characteristic of our co…