Probing and Controlling the Bonds of an Artificial Molecule

See allHide authors and affiliations

Science  05 Jul 2002:
Vol. 297, Issue 5578, pp. 70-72
DOI: 10.1126/science.1071215

You are currently viewing the abstract.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


We demonstrate how molecular quantum states of coupled semiconductor quantum dots are coherently probed and manipulated in transport experiments. The applied method probes quantum states by the virtual cotunneling of two electrons and hence resolves the sequences of molecular states simultaneously. This result is achieved by weakly probing the quantum system through parallel contacts to its constituting quantum dots. The overlap of the dots' wave functions and, in turn, the splitting of molecular states are adjusted by the direct influence of coupling electrodes.

  • * To whom correspondence should be addressed. E-mail: Alex.Holleitner{at}

View Full Text

Stay Connected to Science