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1566nm All-Fiber Broadband Polarization-Entangled Photon Source
We have developed a series of polarization-entangled photon sources to support the growing field of quantum information science. These sources are room-temperature nonlinear optical photon-pair sources based on polarization crystal technology and polarization fiber technology, supporting all common phase-matching schemes. They are available in OEM, benchtop, and rack-mount configurations, covering a broad wavelength range from near-infrared to short-wave infrared. Each source can be further customized to meet niche applications.
Product features:All-fiber structure; Broadband entanglement; High brightness output; Low noise design; Intelligent calibration
Part Number:MP-EPS-1000-3A3A3A-1566-9/125-S
Application area:Quantum communication | Quantum computing | Precision measurement | Quantum imaging | Fundamental research
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Center Wavelength Wavelength Accuracy
1566nm 2nm

General Specifications
Parameter Table
Parameter | Max. | Typical | Mln. | Unit | |
Signal/Idler degeneracy wavelength*2 | 1580 | 1566 ±2 | 1530 | nm | |
Signal/Idler degeneracy wavelength accuracy
| - | ±2 | - | nm | |
Biphoton bandwidth (3 dB)*3
| >120 | 80 | 60 | nm | |
Signal/Idler sum frequency bandwidth (3 dB) | 0.4 | 0.2 | 0.1 | nm | |
Pair-generation rate | 4x106 | 2x106 | 1x106 | Pairs/second | |
Coincidence-to-accidental ratio*4 | - | 1000 | 100 | ||
Fidelity*5 to Ψ=(|HV⟩+|VH⟩)/ √2 | 99.5%*6 | 98% | 97% | ||
Two-photon interference visibility*7 | 99.5%*6 | 98% | 97% | ||
Physical dimensions | W×D×H (cm) | 39×34.4×8.6 | |||
Mass (kg) | ~4 | ||||
Notes:
*1 Under continuous wave (CW) operation.
*2 Degeneracy wavelength is typically conveniently set at the boundary between C-band and L-band. Degeneracy wavelength can be customized within the specified range.
*3 Before the signal and idler are separated by a wavelength division multiplexer.
*4 Coincidence counts measured over a 0.65 ns window, over each 16 nm signal/idler FWHM bandwidth, with free-running SPAD detector dark count ~5 kHz.
*5 Measured on conjugate signal/idler pairs with 1 nm FWHM bandwidth centered at degeneracy over 80 nm. Accidental coincidences are not subtracted.
*6 Limited by detector dark counts.
*7 Measured in HV basis and AD basis. Accidental coincidences are not subtracted.
Operating and Storage Conditions
Condition | Specification |
Operating Temperature | 15°C to 25°C |
Operating Relative Humidity (%RH) | 5% - 60% |
Storage Temperature | -40°C to 40°C |
Storage Relative Humidity (%RH) | 0% - 90% |
Characteristic Curves




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