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Point contact readout for a quantum dot terahertz sensor

S. Pelling ; R. Davis ; L. Kulik ; Alexander Tzalenchuk ; Sergey Kubatkin (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; T. Ueda ; S. Komiyama ; V. Antonov
Applied Physics Letters (0003-6951). Vol. 93 (2008), 7, p. 073501.
[Artikel, refereegranskad vetenskaplig]

We introduce a terahertz 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


Denna post skapades 2009-01-06.
CPL Pubid: 83616


Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik



Chalmers infrastruktur