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Point contact readout for a quantum dot terehertz sensor.

Pelling, S*; Davis, R*; Kulik, L*; Tzalenchuk, A; Kubatkin, S*; Ueda, T*; Komiyama, S*; Antonov, V N* (2008) Point contact readout for a quantum dot terehertz sensor. Appl. Phys. Lett., 93 (7). 073501

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Abstract

We introduce a novel THz radiation sensor in which the photon-induced ionization state of a quantum dot is monitored by a point contact formed in the same semiconductor heterostructure. For comparison we used a readout based on a single-electron transistor coupled to the same quantum dot. The experiments prove functionality of the point contact-based device with additional practical advantage of a higher operation temperature up to 1.5 K and ease of nanofabrication.

Item Type: Article
Subjects: Quantum Phenomena
Quantum Phenomena > Quantum Information Processing and Communication
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4311

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