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arXiv · Emerging technologies (cs.ET) Devki Nandan Jha et al.

Entangled Futures: Quantum Computing's Potential and Challenges in Computer Science

Quantum computing represents a fundamental shift in computation, promising to solve problems currently intractable for classical computers. However, misconceptions persist; quantum computers are not universally faster, nor do they replace classical systems. Current Noisy Intermediate-Scale Quantum (NISQ) devices face…

arXiv · Emerging technologies (cs.ET) Giuseppe Bisicchia et al.

Quantum Broker: QoS-Aware Distribution of Quantum Computations

Cloud-accessible quantum computing has made heterogeneous Quantum Processing Units (QPUs) available through provider platforms that differ in qubit technology, calibration state, queueing behavior, and pricing model. This heterogeneity makes execution management a quantum-engineering concern: a quantum circuit may be…

arXiv · Emerging technologies (cs.ET) Yukun Yang et al.

Distributing Quantum Circuits Using Pre-Distributed Entanglement Pairs over Quantum Networks

Distributing quantum circuits across a network of quantum devices is a recent approach to improve the scalability of quantum computation. Entangled pairs of qubits distributed across network nodes are used as a communication resource for executing inter-node (remote) gates. However, establishing these entanglement…

arXiv · Emerging technologies (cs.ET) Yukun Yang et al.

Online Scheduling and Distribution of Quantum Circuits over Quantum Networks

Emerging quantum networks enable distributed quantum computing (DQC) by interconnecting modest, noisy quantum processors. However, practical deployments face tight memory budgets, probabilistic entanglement generation, and decoherence, all while serving multiple users. In realistic settings -- cloud execution,…

arXiv · Emerging technologies (cs.ET) Nicholas S. DiBrita et al.

SynDebug: A Framework to Debug Logic Bugs in Fault-Tolerant Quantum Computing Programs

Fault-tolerant quantum computing (FTQC) introduces substantial systems-level complexity through quantum error correction (QEC), making debugging FTQC programs challenging. Existing quantum debugging approaches primarily target logical-level circuits and do not naturally support debugging within realistic FTQC…

arXiv · Emerging technologies (cs.ET) Chi Zhang et al.

Lifting: Quantum State Discrimination Framework for Mid-Circuit Measurements

Quantum computing promises new capabilities beyond classical computation. Mid-circuit measurements (MCMs) enable error correction and outcome-dependent control, but their reliability is limited by noise on superconducting hardware. These operations depend on accurate quantum state discrimination (QSD), which assigns…

arXiv · Emerging technologies (cs.ET) Dmitry Filippov et al.

Architecting Instruction Execution for Scalable Fault-Tolerant Quantum Computing

Scaling fault-tolerant quantum computing (FTQC) requires orchestrating millions of operations continuously across a tightly coupled classical-quantum control stack. A critical challenge in this orchestration is determining the optimal hardware-software boundary, i.e., the Quantum Instruction Set Architecture (QISA).…

IEEE Spectrum · Computing Rahul Rao

Superconducting Transistors to Solve Quantum Computing Woes

A quantum computer can be an ungainly thing, because even the most elegant qubit-housing cryostat usually sprouts a thicket of control cables. Most qubits don’t work above a fraction of a degree above absolute zero, but the conventional electronics that control the qubits don’t work in the cryogenic cold. Hence…

IEEE Spectrum · Computing Lucas Laursen

Brazil Seeks Its Quantum State

Countries around the world are trying to find their place in a world of new and powerful quantum computing possibilities. China and the U.S. are investing tens of millions of U.S. dollars to build individual quantum computers for their national laboratories as part of a wider investment of tens of billions of dollars…