Superconducting Single Photon Detecting Systems
超导单光子计数器
Operation in the visible and infrared ranges (overlapping unavailable for the APD range)
Very low level of dark counts (below 10 cps)
Picosecond time resolution
High quantum efficiency (up to 25%)
Operation in a continuous mode
No afterpulsing
One, two, or multi-channel systems are available (up to 4 channels)
Standard single-mode fiber input
Photonic quantum computing
Photon correlation measurements
Quantum cryptography
Free space communication
LIDAR
Time-resolved fluorescence measurements
Picosecond Integrated Circuits analysis (PICA)
Single quantum dot/molecule fluorescence spectroscopy
Registration of extra low IR photon flux
Optical tomography
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Spectral Range
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Quantum Efficiency Referred to Optical Input
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500-1500nm (SW)
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≥ 10% at λ = 600nm
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≥ 25% at λ = 700-1100nm
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≥ 18% at λ = 1310nm
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1000-1700nm (TW)
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≥ 20% at λ = 1000-1200nm
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≥ 23% at λ = 1310nm
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≥ 15% at λ = 1550nm
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1400-2300nm (LW)
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≥ 8% at λ = 1800nm
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≥ 4% at λ = 2000nm
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≥ 1.5% at λ = 2200nm
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Timing Jitter
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≤ 45ps
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Dark Counts Rate
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≤ 10cps for 500-1500nm & 1000-1700nm
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≤ 1000cps for 1400-2300nm
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Counting Rate
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≥ 100MHz (Dead time ≤ 10ns) for 500-1500nm & 1000-1700nm
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≥ 50MHz (Dead time ≤ 20ns) for 1400-2300nm
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Number of Channels
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1-4
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Fiber
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SMF 28e for 500-1500nm & 1000-1700nm
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SM 2000 for 1400-2300nm
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Original Output Voltage
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150mV possible
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Types of Output Voltage
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TTL, ECL, LVDS
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Electrical Connection
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SMA
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Driver Interface
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USB, LabVIEW
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Others
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No afterpulsing, Fiber coupling without misalignment,
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Operation in a Continuous Mode without Gating
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