Qumarg Systems engineers next-generation parametric amplifiers — JPAs and TWPAs — achieving quantum-limited noise for superconducting qubit readout.
From single-qubit readout to large-scale multi-qubit systems — amplifiers engineered for quantum-limited noise and maximum signal fidelity.
Quantum amplifiers sit at the heart of every superconducting qubit readout chain, amplifying fragile quantum signals while adding minimal noise.
Fragile quantum state
~single photon level
JPA / TWPA at 10 mK
Adds minimal noise
Further amplification
at 4K stage
Digital conversion
& state discrimination
Built on proven Josephson junction technology and world-class fabrication infrastructure, optimized for quantum-limited performance and production reliability.
Noise temperatures approaching the Heisenberg limit — the fundamental minimum set by quantum mechanics — ensuring highest fidelity qubit readout.
State-of-the-art Al/AlOx/Al Josephson junction fabrication with industry-leading 65–85% yield rates across wafer-scale production.
Every amplifier tested at 10 mK in dilution refrigerators. Full S-parameter characterization ensures spec compliance before shipment.
Tailored amplifier designs for specific center frequencies, bandwidths, and impedances optimized for your quantum processor architecture.
Rapid lead times for standard configurations. On-site installation support and integration assistance across Asia-Pacific.
Capacity to scale from prototype units to 100+ amplifier systems, supporting the growing demands of quantum computing labs worldwide.
Detailed performance specifications across our product lineup — from narrow-band precision to broadband coverage.
| Parameter | NB-JPA | MB-JPA | TWPA |
|---|---|---|---|
| Bandwidth | 10–50 MHz | 200–500 MHz | 2–4 GHz |
| Gain | 20–25 dB | 18–22 dB | 15–20 dB |
| Noise Temperature | <80 mK | <100 mK | <150 mK |
| Center Frequency | 4–8 GHz | 4–8 GHz | 4–8 GHz |
| Saturation Power | -120 dBm | -110 dBm | -95 dBm |
| Qubit Readout | Single qubit | 3–5 qubits (mux) | 10+ qubits (mux) |
| Pump Requirement | Single tone, ~2f₀ | Single tone, ~2f₀ | Single tone |
| Operating Temp | 10–20 mK | 10–20 mK | 10–20 mK |
From university research labs to commercial quantum processors — Qumarg amplifiers enable breakthrough applications across the quantum ecosystem.
Quantum physics research and qubit characterization
Core readout component for superconducting QPUs
Networked quantum computing architectures
Ultra-sensitive detection and metrology
Accelerating quantum technology development
Quantum education and academic research
Quantum computing ventures and innovation
Infrastructure for QCaaS platforms
Join leading institutions advancing superconducting quantum computing. Contact our engineering team for specifications and custom solutions.