Logic gates Archives - Page 6 of 13 - IEEE Transactions on Quantum Engineering

Postprocessing Variationally Scheduled Quantum Algorithm for Constrained Combinatorial Optimization Problems

March 13, 2024Tatsuhiko Shirai, Nozomu TogawaQuantum ComputingAnnealing, Computational modeling, Logic gates, Quantum algorithm, Quantum annealing, Quantum computing, Schedules

In this article, we propose a postprocessing variationally scheduled quantum algorithm (pVSQA) for solving constrained combinatorial optimization problems (COPs). COPs are typically transformed into ground-state search problems of the Ising model on a quantum annealer or gate-based quantum device. Variational methods are used to find an optimal schedule function that leads to high-quality solutions in […]

Testing and Debugging Quantum Circuits

March 8, 2024Sara Ayman Metwalli; Rodney Van MeterQuantum SoftwareComputer bugs, Computers, Logic gates, Python, Quantum computing, Software, Testing

This article introduces a process framework for debugging quantum circuits, focusing on three distinct types of circuit blocks: amplitude–permutation, phase-modulation, and amplitude–redistribution circuit blocks. Our research addresses the critical need for specialized debugging approaches tailored to the unique properties of each circuit type. For amplitude–permutation circuits, we propose techniques to correct amplitude–permutations mimicking classical operations. […]

Testing and Debugging Quantum Circuits

March 8, 2024Sara Ayman Metwalli, Rodney Van MeterQuantum SoftwareComputer bugs, Computers, Logic gates, Python, Quantum computing, Software, Testing

A Quantum-Classical Collaborative Training Architecture Based on Quantum State Fidelity

February 20, 2024Ryan L'AbbateQuantum ComputingLogic gates, Principal component analysis, Quantum circuit, Quantum computing, Quantum state, Qubit, Tensors

Recent advancements have highlighted the limitations of current quantum systems, particularly the restricted number of qubits available on near-term quantum devices. This constraint greatly inhibits the range of applications that can leverage quantum computers. Moreover, as the available qubits increase, the computational complexity grows exponentially, posing additional challenges. Consequently, there is an urgent need to […]

A Quantum-Classical Collaborative Training Architecture Based on Quantum State Fidelity

February 19, 2024Ryan L'Abbate, Anthony D'Onofrio, Samuel Stein, Samuel Yen-Chi Chen, Ang Li, Pin-Yu Chen, Juntao Chen, Ying MaoQuantum SoftwareLogic gates, Principal component analysis, Quantum circuit, Quantum computing, Quantum state, Qubit, Tensors

Optimal Partitioning of Quantum Circuits Using Gate Cuts and Wire Cuts

December 26, 2023Sebastian Brandhofer, Ilia Polian, Kevin KrsulichQuantum SoftwareLogic gates, Quantum circuit, Quantum computing, Qubit, Runtime, Teleportation, Wires

A limited number of qubits, high error rates, and limited qubit connectivity are major challenges for effective near-term quantum computations. Quantum circuit partitioning divides a quantum computation into classical postprocessing steps and a set of smaller scale quantum computations that individually require fewer qubits, lower qubit connectivity, and typically incur less error. However, as partitioning […]

Optimal Partitioning of Quantum Circuits Using Gate Cuts and Wire Cuts

December 26, 2023Sebastian BrandhoferQuantum SoftwareLogic gates, Quantum circuit, Quantum computing, Qubit, Runtime, Teleportation, Wires

Quantum Vulnerability Analysis to Guide Robust Quantum Computing System Design

December 15, 2023Fang QiQuantum ComputingBenchmark testing, Computational modeling, Computers, Error analysis, Integrated circuit modeling, Logic gates, Quantum computing

While quantum computers provide exciting opportunities for information processing, they currently suffer from noise during computation that is not fully understood. Incomplete noise models have led to discrepancies between quantum program success rate (SR) estimates and actual machine outcomes. For example, the estimated probability of success (ESP) is the state-of-the-art metric used to gauge quantum […]

Quantum Vulnerability Analysis to Guide Robust Quantum Computing System Design

December 15, 2023Fang Qi, Kaitlin N. Smith, Travis LeCompte, Nian-feng Tzeng, Xu Yuan, Frederic T. Chong, Lu PengQuantum ComputingBenchmark testing, Computational modeling, Computers, Error analysis, Integrated circuit modeling, Logic gates, Quantum computing

Exploiting the Quantum Advantage for Satellite Image Processing: Review and Assessment

December 4, 2023Soronzonbold OtgonbaatarQuantum ComputingHyperspectral imaging, Logic gates, Quantum annealing, Quantum computing, Quantum entanglement, Quantum mechanics, Tensors

This article examines the current status of quantum computing (QC) in Earth observation and satellite imagery. We analyze the potential limitations and applications of quantum learning models when dealing with satellite data, considering the persistent challenges of profiting from quantum advantage and finding the optimal sharing between high-performance computing (HPC) and QC. We then assess […]