Fault-tolerant quantum computation using low-cost joint measurements
Yujin Kang,
Jonghyun Lee,
Jinyoung Ha
et al.
Abstract:We introduce a new method to implement joint measurements using a 4-qubit twist defect on a rotated surface code. The proposed method enables us to perform logical S (Phase gate), T ($$\pi /8$$
π
/
8
gate), and H (Hadamard) with low overhead. Combined with other universal quantum gates, we can implement fault-tolerant quantum computation at the lattice surgery level beyond the gate level while sav… Show more
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