Module 01SQ
>70 GHz blocking
Robust suppression of high-frequency thermal noise across the infrared spectrum. Achieves >60 dB attenuation, protecting delicate quantum states from environmental radiation.
Specification
Home of HERD
Ultra-low-loss
IR-blocking filters
Drain high-energy radiation while
preserving signal integrity.
<0.15 dB in-band loss
>60 dB attenuation above 70 GHz
Core Capabilities
HERD at a glance
Ultra-low passband loss that preserves qubit control and readout fidelity.
Module 02SQ
<0.15 dB loss
Industry-leading <0.15 dB insertion loss preserves critical signal integrity in the passband. This unparalleled transparency directly enables much longer qubit coherence times.
Specification
Module 03SQ
Cryo-ready
Rigorously designed, manufactured, and independently tested for stable operation at the millikelvin temperatures found deep inside dilution refrigerator environments.
Specification
Module 04SQ
Quantum-native
Engineered specifically for superconducting quantum architectures. Specialized materials and geometries avoid compromising surrounding quantum hardware performance.
Specification
See the Difference
How HERD stacks up
Room-temperature measurements up to 140 GHz
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Real-World Impact
Validation from the field
Peer-reviewed publications from 2025 demonstrating real-world quantum system applications using HERD filters.
2025Yale University
Recovery dynamics of a gap-engineered transmon after a quasiparticle burst
Gap-engineered transmons show reduced sensitivity to quasiparticle bursts. Elevated substrate temperature allows quasiparticles to overcome the engineered gap. Relaxation recovers rapidly, but thermal effects highlight constraints of gap engineering alone.
doi.org/10.48550/arXiv.2505.08104
2025Princeton University
2D transmons with lifetimes and coherence times exceeding 1 millisecond
Demonstrates tantalum transmons on high-resistivity silicon reaching 2D qubit lifetimes up to ~1.7 ms and high echo coherence. Supports 99.994% single-qubit gate fidelity, representing a major step toward practical, wafer-scalable quantum processors.
doi.org/10.48550/arXiv.2503.14798
2025PTB
An rf-SQUID-based traveling-wave parametric amplifier with -84 dBm input saturation power
Presents an rf-SQUID-based Josephson TWPA achieving −84 dBm average saturation power and ~20 dB gain over 3.5–8.5 GHz. This architecture provides near-quantum-limited noise performance through the use of thousands of coupled rf-SQUID cells.
doi.org/10.48550/arXiv.2503.02489
The HERD
Products
See our HERD family
Latest
2nd generation
HERD-2
Compact, non-magnetic filter for advanced cryogenic systems. Our latest and most advanced IR-blocking filter with industry-leading performance.
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