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CIRCUIT ARRANGEMENT FOR SUPERCONDUCTIVE QUANTUM INTERFERENCE DETECTORS (SQUIDS)A sensor system for magnetic signals, especially for biomagnetic signals such as signals from the brain or the heart in the form of a SQUID has two superconducting magnetic field detectors connected in parallel and a ...
Thanks to Moore’s Law, it becomes possible to create complex digital signal processing on chip side-by-side with, or under the detectors, thus minimizing noise and jitter. Proximity of detection and processing maximizes compactness, while reducing power dissipation due to the lack of expensive an...
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The first quantum technology that harnesses quantum mechanical effects for its core operation has arrived in the form of commercially available quantum key distribution systems. This technology achieves enhanced security by encoding information in photons such that an eavesdropper in the system can be det...
A π-phase rotation is then performed on the collective mode of the ensemble R2 conditional on that the two clicks appear in the detectors D1I, D2L or D2I, D1L. The collective excitation in the ensembles R1 and R2, if appearing, would be found in the same “polarization” state (d0...
the fact that Alice and Bob should be spacelike separated so that the choice of measurements cannot influence one another, was first closed after the ’80s [318,319]. On the other hand, the detection loophole [320,321], which is related to the inefficiencies of detectors, was closed in ...
Zhe Yu Ou and Leonard Mandel found that, if perfectly distinguishable, the particles always exit the experiment together as a pair. Explainable using the statistics of bosons, such interference is described as yielding complete “visibility” – in other words, two detectors placed behind the beam...
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Similarly, the tests can be performed using linear-optical transformations consisting of a few operations: a global permutation of all modes, simple interferometers acting on at most four modes, and measurement using single-photon detectors. We also show that the protocol can tolerate experimental ...