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Title: | Non-avalanche single photon detection without carrier transit-time delay through quantum capacitive coupling |
Authors: | Kumar, Rahul |
Keywords: | EEE Quantum capacitive coupling |
Issue Date: | 2017 |
Publisher: | OSA Open Access |
Abstract: | Searching for innovative approaches to detect single photons remains at the center of science and technology for decades. This paper proposes a zero transit-time, non-avalanche quantum capacitive photodetector to register single photons. In this detector, the absorption of a single photon changes the wave function of a single electron trapped in a quantum dot (QD), leading to a charge density redistribution nearby. This redistribution translates into a voltage signal through capacitive coupling between the QD and the measurement probe. Using InAs QD/AlAs barrier as a model system, the simulation shows that the output signal reaches ~4 mV per absorbed photon, promising for high-sensitivity, ps single-photon detection. |
URI: | https://opg.optica.org/oe/fulltext.cfm?uri=oe-25-22-26508&id=375372 http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/10130 |
Appears in Collections: | Department of Electrical and Electronics Engineering |
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