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IBM Quantum Computers: Evolution, Performance, and Future Directions
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Quantum computers represent a transformative frontier in computational technology, promising exponential speedups beyond classical computing limits. IBM Quantum has led significant advancements in both hardware and software, providing access to quantum hardware via IBM Cloud since 2016, achieving a milestone with the world's first accessible quantum computer. This article explores IBM's quantum computing journey, focusing on the development of practical quantum computers. We summarize the evolution and advancements of IBM Quantum's processors across generations, including their recent breakthrough surpassing the 1,000-qubit barrier. The paper reviews detailed performance metrics across various hardware, tracing their evolution over time and highlighting IBM Quantum's transition from the noisy intermediate-scale quantum (NISQ) computing era towards fault-tolerant quantum computing capabilities.
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Cited by 13 Pith papers
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High-level quantum structured programs as quantum registers compositions
A formal framework for structured quantum programming where operations act on entire quantum registers, demonstrated by a quantum SMT solver prototype.
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Multi-Controlled Quantum Gates in Linear Nearest Neighbor
Multi-controlled X and SU(2) gates on linear-nearest-neighbor qubit arrays require at most 4k+8n-16 and 4k+8n-14 CNOT gates, respectively, improving earlier bounds.
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Leveraging Hardware Power through Optimal Pulse Profiling for Each Qubit Pair
A per-qubit-pair pulse profiling and parallel calibration protocol lowers two-qubit gate errors and doubles quantum volume on 127-qubit IBM processors.
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Emulation of Entanglement Distribution Networks on a Quantum Computer
Mathematically equivalent depolarizing-noise implementations produce markedly different results when emulating an entanglement distribution network on real quantum hardware.
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A Physics-Informed Neuro-Fuzzy Framework for Quantum Error Attribution
An ANFIS classifier with a Bhattacharyya-distance veto reports 89.5% effective accuracy separating quantum hardware noise from software bugs, but its main features presuppose the ground-truth circuit and its veto thre...
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Multi-FPGA Synchronization and Data Communication for Quantum Control and Measurement
A multi-FPGA clock synchronization and fiber data communication framework for the QubiC control stack passes bench tests, keeping three boards synchronized for 16 hours and enabling cross-board feed-forward at about 1600 ns.
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Non-unitary Variational Quantum Eigensolver with the Localized Active Space Method and Cost Mitigation
LAS-nuVQE, which applies a non-unitary Jastrow operator on top of a LASSCF initial state plus a hardware-efficient ansatz, reaches chemical accuracy in noiseless simulations of H4 and square cyclobutadiene with under ...
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Hybrid Quantum Neural Networks for Efficient Protein-Ligand Binding Affinity Prediction
A hybrid quantum-classical network matches or slightly beats classical baselines on protein-ligand binding affinity prediction while using fewer parameters.
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Universal Fluctuations in the Tail Probability for d=2 Random Walks in Space-Time Random Environments
The reported d=2 random-walk universality result is unsupported: the full text is a quantum federated learning survey that never mentions random walks, tail probabilities, or lambda_ext.
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Quantum Simulation of Molecular Dynamics Processes -- A Benchmark Study Using Classical Simulator and Present-Day Quantum Hardware
A benchmark showing that split-operator quantum circuits reproduce classical molecular dynamics on simulators but fail on today's noisy hardware.
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1D Cluster State Generation On Superconducting Hardware
A 4-qubit linear cluster state forms under a tuned Ising-type Hamiltonian at revival times t = (2n+1)π/g, and simulations show T2 dephasing degrades its fidelity faster than T1 relaxation.
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Quantum Machine Learning: A Hands-on Tutorial for Machine Learning Practitioners and Researchers
A structured tutorial that introduces quantum machine learning concepts, algorithms, theory, and PennyLane code to classical ML practitioners.
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A Toffoli Gate Decomposition via Echoed Cross-Resonance Gates
A nine-ECR-gate decomposition of the Toffoli gate is asserted without verification or comparison to known CNOT-based decompositions.
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