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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…