30 research outputs found

    High Frequency Acousto-electric Single Photon Source

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    We propose a single optical photon source for quantum cryptography based on the acousto-electric effect. Surface acoustic waves (SAWs) propagating through a quasi-one-dimensional channel have been shown to produce packets of electrons which reside in the SAW minima and travel at the velocity of sound. In our scheme these electron packets are injected into a p-type region, resulting in photon emission. Since the number of electrons in each packet can be controlled down to a single electron, a stream of single (or N) photon states, with a creation time strongly correlated with the driving acoustic field, should be generated

    Effects of supervised aerobic and strength training in overweight and grade I obese pregnant women on maternal and foetal health markers: the GESTAFIT randomized controlled trial

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    The relationship among restless legs syndrome (Willis–Ekbom Disease), hypertension, cardiovascular disease, and cerebrovascular disease

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    Stiffness of Broad-Faced Gasketted Flanged Joints

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    Progress in integrated widely tunable edge-emitting 1.55 µm laser diodes

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    We present the progress obtained in recent years on widely tunable edge-emitting lasers at 1.55 mu m. We focus on electronically tunable lasers, which can switch the wavelength in tens of nanoseconds and thus offer great potential for new networking concepts such as optical packet/burst switching, label switching, bandwidth on demand, ..
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