Abstract
A single-chip mesoscopic device is proposed for the measurement of the tunneling time of electrons or holes through various mesoscopic structures. The method is based on the possibility of generating spatially separated electrons and holes that are transported with a controlled velocity and separation over a quantum wire. The electrons and holes, subsequently separated in distinct waveguides, are allowed to recombine after propagating through carefully controlled distances. The electron and hole coincidence requirement is satisfied by compensating the tunneling time of one type of carrier through an engineered mesoscopic structure with the magnetic field induced delay of the other carrier type.
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