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Universal set of quantum gates for the flip-flop qubit in the presence of 1/f noise

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arxiv 2104.14341 v1 pith:RGENUAXJ submitted 2021-04-29 quant-ph

classification quant-ph
keywords flip-flopgatequantumqubitqubitsstatesdonordownarrow
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Impurities hosted in semiconducting solid matrices represent an extensively studied platform for quantum computing applications. In this scenario, the so-called flip-flop qubit emerges as a convenient choice for scalable implementations in silicon. Flip-flop qubits are realized implanting phosphorous donor in isotopically purified silicon, and encoding the logical states in the donor nuclear spin and in its bound electron. Electrically modulating the hyperfine interaction by applying a vertical electric field causes an Electron Dipole Spin Resonance (EDSR) transition between the states with antiparallel spins $\{|\downarrow\Uparrow\rangle,|\uparrow\Downarrow\rangle\}$, that are chosen as the logical states. When two qubits are considered, the dipole-dipole interaction is exploited allowing long-range coupling between them. A universal set of quantum gates for flip-flop qubits is here proposed and the effect of a realistic 1/f noise on the gate fidelity is investigated for the single qubit $R_z(-\frac{\pi}{2})$ and Hadamard gate and for the two-qubit $\sqrt{iSWAP}$ gate.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Fidelity Analysis of Adiabatically Driven Donor Spins as Two-Qubit and Ququart Systems

    quant-ph 2026-07 conditional novelty 4.0 of 10

    Numerical leakage-aware randomized benchmarking shows that operating a Si:P donor spin system as a native ququart (C4 Clifford group) yields 40-50% lower error rates than encoded two-qubit operation (C2^⊗2) under char...

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