Quantum Computing

Processors, algorithms, networks, research, and applications in quantum computing.

21 Articles

Quantum Computing

IBM Achieves Breakthrough in Modular Quantum Computing by Connecting Processors Over Meter-Scale Distances

IBM researchers have successfully connected two quantum processors using meter-scale links with a data transfer fidelity of 99%, paving the way to transcend single-chip limitations and build massive, scalable quantum systems.

2026-10-27

Quantum Computing

Quantum Computing in Service of Society: Winning NEDO Teams Rely on IBM Platform

The results of the NEDO Quantum Challenge in Japan revealed the dominance of the IBM Quantum platform, as all nine winning teams used IBM technologies to develop innovative solutions in the fields of health, infrastructure, and entertainment.

2026-10-23

Quantum Computing

Google Offers Willow Processor a Practical Way to Reduce Quantum Computing Errors 40-Fold

Google Quantum AI has practically demonstrated on the Willow processor that the “magic state cultivation” technique can reduce errors by about 40-fold, achieving a record logical fidelity of 99.99% for T states. The achievement removes one of the biggest resource bottlenecks facing the construction of error-corrected quantum computers, but it still needs to be demonstrated at a larger scale.

2026-10-15

Quantum Computing

Qiskit Enables Building Quantum Circuits Directly from Fortran, C++, and Julia Without Python

IBM announced that the C interface in Qiskit, built on the Rust core, enables use of the development package from Fortran, C++, and Julia without requiring a Python layer. The change targets integrating quantum circuits directly into high-performance computing and scientific simulation workflows.

2026-10-06

Quantum Computing

IBM Opens Quantum Circuit Execution for Direct Control of Error Mitigation and Correction Techniques

IBM announced the Directed Execution model for the IBM Quantum Compute Service, moving part of the error-mitigation logic from IBM’s servers to the client side and enabling its inspection and customization. The model relies on Executor, Samplomatic, and Qiskit libraries to run thousands of circuit instances, supporting research ranging from error mitigation to error correction.

2026-10-05

Quantum Computing

How Cloudflare Uses AI to Map the Migration to Post-Quantum Cryptography

Cloudflare is developing an internal tool called CryptoLabe to discover uses of cryptography in its repositories and measure its readiness to transition to post-quantum cryptography by 2029. The experiment reveals that AI can track indirect uses and dependencies, but its results require review by engineers, and the tool is not available to customers.

2026-09-29

Quantum Computing

From Error Mitigation to Fault-Tolerant Quantum Computing: A Gradual Path Toward Logical Circuits

IBM Quantum presents a staged vision for transitioning from mitigating errors in current quantum devices to error correction and fault-tolerant computing, rather than treating these technologies as separate phases. It highlights research results including an effective reduction in error rates by approximately tenfold and a 63-fold reduction in sampling overhead in hybrid methods, while hardware, reliability, and scalability challenges remain open.

2026-09-16

Quantum Computing

IBM Offers Academic Researchers Credits for Access to Its Quantum Computers

The IBM Quantum Credits program provides academic researchers with additional access to IBM’s quantum hardware and software for proposing new research projects at a practical scale. The company requires a clear research plan, institutional affiliation, and a demonstrated need for resources beyond the free IBM Quantum Open Plan.

2026-09-15

Quantum Computing

Cloudflare Supports Post-Quantum DNSSEC Signature Verification on 1.1.1.1

Cloudflare enabled verification of DNSSEC signatures using the NIST-standardized ML-DSA-44 algorithm on its 1.1.1.1 resolver, in a step to test the impact of large signatures and the risks of falling back to weaker traditional algorithms. The update does not yet represent a complete post-quantum chain of trust, as that requires adoption of the algorithm across DNS servers, records, and delegations all the way to the root.

2026-09-10

Quantum Computing

Switzerland Prepares to Host Its First IBM Quantum System Two at CSCS

IBM, Lockheed Martin, and ETH Zurich have announced the creation of a quantum innovation center in Switzerland, which will host the country’s first IBM Quantum System Two by the end of 2026. The center will give Swiss universities, startups, and institutions access to quantum computing, training initiatives, and applied research.

2026-09-10

Quantum Computing

IBM Unveils Nighthawk r2 with 25× Faster Processing and Independent Qubit Reset

IBM announced the availability of its Nighthawk r2 quantum processor through the IBM Quantum Platform, with 120 programmable qubits and more than 100,000 circuits per second, enabled by a fast, independent reset mechanism. The company says the system maintained Heron-level gate fidelity, reduced initialization error by approximately 25×, and ran circuits containing more than 7,500 gates accurately.

2026-09-02

Quantum Computing

IBM Launches Qiskit Fermions to Advance Quantum Simulation of Fermionic Systems

IBM has announced Qiskit Fermions, an open-source research package that enables the representation of fermionic operators and circuits and postpones their conversion to qubits until the compilation stages. IBM presents an example simulating the Fermi-Hubbard model with constant two-qubit gate depth when using an encoding based on flow groups.

2026-08-24

Quantum Computing

IBM Unveils Modular Architecture for Cooling Multi-Processor Quantum Computers

IBM announced a new architecture for ultra-cold cooling cells aimed at connecting multiple quantum processors within a single system, while simplifying scaling and upgrades and supporting the development of fault-tolerant quantum computers. The company says the design was tested by operating two connected cooling cells at its facility in Poughkeepsie.

2026-08-19

Quantum Computing

Researchers Demonstrate Reliable Quantum Progress Through Built-In Verification of Quantum Computing

IBM announced results from three research papers that demonstrated quantitative computations in regimes where classical simulation is infeasible, using methods to verify the reliability of the results or the computation process itself. The work included collaborations with the University of Chicago, Qedma, RIKEN, BlueQubit, and Algorithmiq.

2026-08-15

Quantum Computing

IBM Explains the Role of Spin Qubits Following Acquisition Agreement for HRL Laboratories

IBM said that HRL Laboratories’ expertise in engineering silicon spin qubits will support its plan to scale quantum computing. The company explains how these qubits work and their advantages, along with initial results from a system containing up to 18 qubits.

2026-08-15

Quantum Computing

IBM Launches Qiskit SDK 2.5 with Compiler Improvements and Broader Support for C Interfaces

IBM announced the release of Qiskit SDK v2.5 on July 14, 2026, featuring a new framework for building multirepresentation compilation pipelines, dedicated pipelines for fault-tolerant quantum computing, and significant improvements in compiler performance. The release also includes support for inspecting classical control flow from the C interface, along with renaming the Qiskit Runtime Service to IBM Quantum Compute Service without changing the interfaces or workflows.

2026-08-15

Quantum Computing

IBM Showcases Quantum Computing Updates for the Second Quarter of 2026

IBM Quantum reviewed a range of research, software, and educational updates in the second quarter of 2026, including the availability of a workflow for simulating a protein comprising 12,635 atoms and an experiment simulating hadron dynamics on real quantum hardware. The platform also unveiled operational metrics and new tools for improving errors and developing circuits and simulations.

2026-08-15

Quantum Computing

IBM and ORNL Use Quantum Computing to Simulate Fusion Reactor Salts

Researchers from Oak Ridge National Laboratory, IBM, and Cleveland Clinic have shown that a workflow combining quantum and classical computing with artificial intelligence can simulate the chemistry of molten salts associated with tritium fuel production for fusion reactors. The results remain preliminary, but they represent a step toward designing salt blankets for fusion reactors before testing them in practice.

2026-08-15