_hot_ — Qedq-002

| ⚠️ | Reason | |----|--------| | | USD 12,950 (list) – still high for hobbyists, though comparable to other SNSPD systems. | | Power draw | 35 W means you need a reliable power source; field deployments must budget for batteries or portable generators. | | Learning curve | Cryogenic operation, albeit automated, requires basic understanding of thermal cycles; a novice may need a few days to get comfortable. | | Limited spectral range | Optimized for 400‑900 nm; performance drops sharply in the IR (> 1 µm) where some quantum‑communication labs operate. | | No built‑in photon‑tagging | If you need per‑photon timestamping beyond the provided API, you’ll have to add external hardware (e.g., a Time‑to‑Digital Converter). |

However, if you're referring to a specific document, product, or piece of research labeled as "qedq-002," here are a few possibilities on how to approach your query: qedq-002

Disclaimer: I am an AI, not a medical professional or pharmacist. The following information is based on general research principles and available public data. Always consult a licensed healthcare provider or refer to the official product labeling before using any medication. | ⚠️ | Reason | |----|--------| | |

The QEDQ‑002 delivers on its headline promises—high quantum efficiency, ultra‑low dark noise, and sub‑nanosecond timing—all in a desktop‑friendly package. While the price tag is premium, the elimination of external cryogen logistics and the solid software ecosystem make it a strong value proposition for serious photonics work. If your workflow hinges on photon‑level precision, the QEDQ‑002 is arguably the most practical SNSPD module currently on the market. | | Limited spectral range | Optimized for

Bottom line : The QEDQ‑002 sits at the sweet spot between performance and system‑level integration. It does not have the sheer pixel count of the QET‑SN‑500, but it outperforms most competitors in jitter and dark count while keeping the overall footprint low.

| Feature | Specification | Why It Matters | |---------|----------------|----------------| | | Superconducting Nanowire Single‑Photon Detector (SNSPD) array, 64 × 64 pixels | Enables single‑photon detection with > 85 % quantum efficiency in the 400‑900 nm band | | Timing resolution | 250 ps jitter (RMS) | Critical for time‑correlated single‑photon counting (TCSPC) and LIDAR | | Dynamic range | 10⁶:1 (single‑photon to 10⁶ photons per pulse) | Handles both ultra‑weak signals and bright bursts | | Data throughput | 5 Gbps raw, 2 Gbps sustained via USB‑3.2 Gen 2x2 | Real‑time streaming to a PC or edge server | | Temperature control | Closed‑loop cryocooler (2.5 K operating point) with ± 10 mK stability | Guarantees detector performance without external LN₂ | | Software stack | QEDSuite 2.3 (cross‑platform: Windows, macOS, Linux) + API (Python, C++) | Easy integration into existing measurement pipelines | | Power consumption | 35 W (including cryocooler) | Acceptable for benchtop setups; can be battery‑powered for field work | | Environmental rating | IP54 (dust‑resistant, splash‑proof) | Suitable for lab‑bench or semi‑outdoor experiments |

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