Quantum Computing
Research Hub

Eliminates discrete parallel capacitors by integrating them directly with Josephson junctions. Simpler fabrication compatible with standard superconducting qubit processes.

NIST/Pittsburgh team: 25 rf-SQUIDs in a low-Q resonator with trilayer Nb process. Record saturation power enables reading out more qubits per amplifier chain.

Yale group: three-wave mixing with suppressed Kerr nonlinearity. Single-layer optical lithography. Validated for simultaneous readout of two transmon qubits.

Extends JPA operation to K-band (21-23.5 GHz) for qubits at elevated temperatures (100 mK-1 K). Waveguide-coupled design eliminates lossy wirebonds.

Uses Floquet mode engineering to achieve record quantum efficiency and measurement fidelity. A single device can multiplex readout of 50-100+ qubits simultaneously.

Achieves 0.68-quanta total noise (only 0.18 photons above the Standard Quantum Limit). Closest approach to the fundamental quantum noise floor ever measured in a broadband amplifier.

Uses rf-SQUID elements to achieve 10x higher saturation power than conventional JTWPAs while maintaining broadband gain. Critical for scaling multiplexed readout.

Silent Waves / Institut Neel: combines 20 dB amplification with 30 dB reverse isolation in a single device, eliminating bulky ferrite circulators from the readout chain.

100x power reduction in cryogenic CMOS transistors. Path to integrating classical control electronics at millikelvin temperatures alongside qubits.

World record: 809,120-junction Single Flux Quantum circuit. SEEQC demonstrated SFQ operation at 10 mK. Digital control at millikelvin eliminates wiring bottleneck.

State-of-the-art frequency-multiplexed qubit readout achieves 99.6% fidelity in 100 ns integration time across multiple qubits per readout line.

Open-source EDA for designing superconducting quantum devices. GUI-based layout with integrated electromagnetic simulation (Ansys, COMSOL, Palace). Design-to-fab workflow.

IQM's open-source KLayout-based tool for generating superconducting quantum processor chip layouts. Parametric design library for resonators, couplers, Josephson junctions.

Berkeley Lab / NERSC: world's largest quantum chip electromagnetic simulation using 6,724 NVIDIA A100 GPUs. Enables full-chip characterization at unprecedented scale.

Professional quantum EDA within Keysight's ADS 2026 platform. Integrates quantum device design with microwave circuit analysis and full EM simulation.

Stim: ultra-fast stabilizer circuit simulator (10M+ samples/sec). PyMatching / Sparse Blossom decoder: >1M corrections/core/sec. The gold standard for QEC research.

First commercially deployed real-time QEC decoding stack. Deltaflow OS handles syndrome extraction, decoding, and feedback in the quantum control loop.

GPU-accelerated stabilizer simulation achieving 1,060x speedup over CPU baselines. Part of NVIDIA's cuQuantum SDK for quantum computing acceleration.

Princeton's breakthrough: record coherence for 2D transmon qubits. Ta's robust oxide chemistry enables aggressive cleaning without degrading properties. Potentially wafer-scale manufacturable.

Industry standard for readout resonators, coupling lines, ground planes. IBM Heron R2 (156 qubits). Key challenge: native oxide TLS defects. New mitigations: Pt capping, SAM passivation, HF/NH4F treatment.

Exceptional oxidation resistance, high kinetic inductance, tunable Tc (1-5 K). Ideal for novel qubit designs (fluxonium, granular aluminum). Used at NIST, MIT LL, Chalmers, JPL.

IMEC demonstrated a 300mm overlap-junction CMOS process for superconducting qubits with no e-beam lithography required. The most significant scalability milestone in superconducting qubit fabrication.

TiN-filled Through-Silicon Vias for 3D quantum chip integration. Enables multi-tier stacking of qubit and control layers, critical for scaling beyond 2D planar layouts.

Chalmers/WACQT demonstrated indium bump flip-chip bonding for 25-qubit processors. Enables separating qubit and readout layers for reduced crosstalk and improved coherence.

World's first modular, expandable vacuum chamber for scaling to hundreds of thousands of qubits. Self-supported modules connect to form unified payload space. 1,000+ systems deployed globally.

Largest dilution refrigerator ever shipped. Modular design with 3m workspace for 100+ qubit systems. First two installed April 2025. Division being acquired by Quantum Design.

Compact inverted dilution refrigerator: cools below 25 mK and returns to room temperature in under 24 hours. Designed for rapid quantum chip testing cycles.

Google Willow: first demonstration of below-threshold surface code operation. Logical error rate decreases exponentially as code distance increases. Distance-7 code on 101 physical qubits.

IBM's bivariate bicycle codes: [[144,12,12]] "gross code" encodes 12 logical qubits in 288 physical qubits. ~10x fewer qubits than equivalent surface code. Sub-480 ns real-time decoding.

Threshold improved from 0.14% to 0.36% via flag qubits. Transversal Clifford gates with 0.0027 additional error rate. Magic state fidelity exceeding 99%. Could surpass surface codes with 4x hardware improvement.

Microsoft's 4D geometric codes achieve 1,000x error reduction. Combined with Iceberg Quantum Pinnacle architecture targeting RSA-2048 with less than 100K physical qubits.

First verifiable quantum advantage algorithm: 13,000x faster than Frontier supercomputer. Published in Nature, October 2025. A definitive demonstration that quantum computers can outperform classical machines on meaningful computations.

94 logical qubits from just 98 physical qubits (trapped ions). March 2026. Demonstrates the extraordinary qubit overhead efficiency of trapped-ion platforms compared to superconducting approaches.

Demonstrated quantum utility with 5,000 two-qubit gates, running experiments for 2.2 hours continuously. Open Quantum Advantage Tracker for community validation.

FIPS 203/204/205/206 finalized August 2024. HQC selected March 2025. Industry migration timeline: 2024-2035. Critical for financial institutions and government systems.

Gidney estimate: <1M qubits (May 2025). Iceberg Pinnacle: <100K qubits (Feb 2026). Resource estimates dropping faster than expected. Satellite QKD demonstrated at 12,900 km record.