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Globally driven superconducting quantum computing architecture
Published 2025-03-01Get full text
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Characterizing Grover search algorithm on large-scale superconducting quantum computers
Published 2025-01-01Subjects: “…State-of-the-art superconducting quantum computers…”
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Accurately Simulating the Time Evolution of an Ising Model with Echo Verified Clifford Data Regression on a Superconducting Quantum Computer
Published 2025-05-01“…Finally, we present a practical demonstration of Echo Verified Clifford Data Regression (EVCDR) on a superconducting quantum computer and observe accurate results for the time evolution of an Ising model over spin-lattices consisting of up to 35 sites and circuit depths up to 173 entangling layers.…”
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Suppressing spectator-induced dephasing through optimized dynamical decoupling implementation
Published 2025-05-01“…DD effectively mitigates decoherence in superconducting quantum computing systems, where precise implementation plays a crucial role in optimizing its performance. …”
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Noise-Aware Quantum Amplitude Estimation
Published 2024-01-01“…We provide results from quantum amplitude estimation run on various IBM superconducting quantum computers and on Quantinuum's H1 trapped-ion quantum computer to show that the proposed model is a good fit for real-world experimental data. …”
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Sparse Blossom: correcting a million errors per core second with minimum-weight matching
Published 2025-01-01“…For 0.1% circuit-level depolarising noise, sparse blossom processes syndrome data in both $X$ and $Z$ bases of distance-17 surface code circuits in less than one microsecond per round of syndrome extraction on a single core, which matches the rate at which syndrome data is generated by superconducting quantum computers. Our implementation is open-source, and has been released in version 2 of the PyMatching library.…”
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Quantum computer error structure probed by quantum error correction syndrome measurements
Published 2024-12-01“…In this work, we have assessed the performance of IBM superconducting quantum computer devices implementing heavy-hexagon code syndrome measurements with circuit sizes up to 23 qubits, against the error assumptions underpinning code threshold calculations. …”
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Quantum Surface Topological Code for Bell State Stabilization in Superconducting Physical Qubit Systems
Published 2025-06-01“…This paper outlines the methodology for implementing this strategy in other applications, offering a pathway to improve results (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>≈</mo><mn>20</mn><mo>%</mo></mrow></semantics></math></inline-formula>) when experimenting with superconducting quantum computers.…”
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New design of three-qubit system with three transmons and a single fixed-frequency resonator coupler
Published 2025-04-01“…Abstract The transmon, which has a short gate time and remarkable scalability, is the most commonly utilized superconducting qubit, based on the Cooper pair box as a qubit or coupler in superconducting quantum computers. Lattice and heavy-hexagon structures are well-known large-scale configurations for transmon-based quantum computers that classical computers cannot simulate. …”
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Comparative study of quantum error correction strategies for the heavy-hexagonal lattice
Published 2025-02-01“…In this work, we make a comparative study of possible strategies to overcome this limitation for the heavy-hexagonal lattice, the architecture of current IBM superconducting quantum computers. We explore two complementary strategies: the search for an efficient embedding of the surface code into the heavy-hexagonal lattice, as well as the use of codes whose connectivity requirements are naturally tailored to this architecture, such as subsystem-type and Floquet codes. …”
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Generation of Frequency-Tunable Shaped Single Microwave Photons Using a Fixed-Frequency Superconducting Qubit
Published 2025-06-01“…Scaling up a superconducting quantum computer will likely require quantum communication between remote chips, which can be implemented using an itinerant microwave photon in a transmission line. …”
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Parameter optimization for the unimon qubit
Published 2025-07-01“…Inductively shunted superconducting qubits, such as the unimon qubit, combine high anharmonicity with protection from low-frequency charge noise, positioning them as promising candidates for the implementation of fault-tolerant superconducting quantum computers. In this work, we develop accurate closed-form approximations for the frequency and anharmonicity of the unimon qubit that are also applicable to any single-mode superconducting qubits with a single-well potential profile, such as the quarton qubit or the kinemon qubit. …”
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Efficient separate quantification of state preparation errors and measurement errors on quantum computers and their mitigation
Published 2025-05-01“…To demonstrate this, we present results from cloud experiments on IBM's superconducting quantum computers. The results indicate that the state preparation error rate is also an important metric for qubit metrology that can be efficiently obtained.…”
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