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- W3002718752 abstract "Quantum algorithms offer a dramatic speedup for computational problems in machine learning, material science, and chemistry. However, any near-term realizations of these algorithms will need to be heavily optimized to fit within the finite resources offered by existing noisy quantum hardware. Here, taking advantage of the strong adjustable coupling of gmon qubits, we demonstrate a continuous two-qubit gate set that can provide a 3x reduction in circuit depth as compared to a standard decomposition. We implement two gate families: an iSWAP-like gate to attain an arbitrary swap angle, $theta$, and a CPHASE gate that generates an arbitrary conditional phase, $phi$. Using one of each of these gates, we can perform an arbitrary two-qubit gate within the excitation-preserving subspace allowing for a complete implementation of the so-called Fermionic Simulation, or fSim, gate set. We benchmark the fidelity of the iSWAP-like and CPHASE gate families as well as 525 other fSim gates spread evenly across the entire fSim($theta$, $phi$) parameter space achieving purity-limited average two-qubit Pauli error of $3.8 times 10^{-3}$ per fSim gate." @default.
- W3002718752 created "2020-01-30" @default.
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- W3002718752 date "2020-09-15" @default.
- W3002718752 modified "2023-10-12" @default.
- W3002718752 title "Demonstrating a Continuous Set of Two-qubit Gates for Near-term Quantum Algorithms" @default.
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- W3002718752 doi "https://doi.org/10.1103/physrevlett.125.120504" @default.
- W3002718752 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33016760" @default.
- W3002718752 hasPublicationYear "2020" @default.
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