With over 42,000 students, Universität Hamburg (UHH) is the largest university in the Free and Hanseatic City of Hamburg, the largest research and training institution in northern Germany, and one of the largest universities in Germany. Located in the heart of the Free Hanseatic City of Hamburg, the university offers a wide range of courses and excellent research.
The aim is to purchase and deliver to the Institute of Quantum Physics a complete photon counting system for laser light at the wavelength of 1064 nm with 8 parallel detectors, which can be used directly into operation.
The photon counting system should be suitable for counting the photons in two transverse single-mode laser beams in a squeezed vacuum state in time segments of ten nanoseconds, achieving a quantum efficiency of more than 90% for each of the eight integrated detectors. The value for the quantum efficiency of greater than 90% can be defined as follows: Single photon pairs that are divided into two TEM00 free beams are output as two countable electrical pulses from two detectors with a probability greater than 0.902 = 0.81. This definition is intended to apply to all eight detectors. In order for dark counters (electrical output pulses without detection of a photon at 1064 nm) to produce only a small falsification of the counting rates, the dark count rates of the eight detectors must be less than 30 per second per detector and must have no temporal correlations between the eight detectors.
LOT-0001
Procurement of a photon counting system with 8 detectors that can be operated in parallel
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With over 42,000 students, Universität Hamburg (UHH) is the largest university in the Free and Hanseatic City of Hamburg, the largest research and training institution in northern Germany, and one of the largest universities in Germany. Located in the heart of the Free Hanseatic City of Hamburg, the university offers a wide range of courses and excellent research.
The aim is to purchase and deliver to the Institute of Quantum Physics a complete photon counting system for laser light at the wavelength of 1064 nm with 8 parallel detectors, which can be used directly into operation.
The photon counting system should be suitable for counting the photons in two transverse single-mode laser beams in a squeezed vacuum state in time segments of ten nanoseconds, achieving a quantum efficiency of more than 90% for each of the eight integrated detectors. The value for the quantum efficiency of greater than 90% can be defined as follows: Single photon pairs that are divided into two TEM00 free beams are output as two countable electrical pulses from two detectors with a probability greater than 0.902 = 0.81. This definition is intended to apply to all eight detectors. In order for dark counters (electrical output pulses without detection of a photon at 1064 nm) to produce only a small falsification of the counting rates, the dark count rates of the eight detectors must be less than 30 per second per detector and must have no temporal correlations between the eight detectors.