Theoretical Physics Colloquium
Writing and reading spin information on mobile electronic qubits
by Prof. Amnon Aharony ((Ben Gurion University and Tel Aviv University, Israel)
Wednesday, December 23, 2009
from
to
(Asia/Kolkata)
at Colaba Campus ( AG-66 )
at Colaba Campus ( AG-66 )
Description |
Quantum computing is based on qubits, which contain the full information on the spinor which describes an electron. Essential ingredients require the ability to write and read such information. Here I consider mobile electrons, which move through mesoscopic quantum networks (made of quantum wires or of arrays of quantum dots). Combining spin-orbit interactions, whose strength can be tuned by external gate voltages, and the Aharonov-Bohm flux, which can be tuned by an external magnetic field, one can tune the properties of such networks, so that the outgoing electrons are polarized along a desired direction. This amounts to 'writing' the desired information on the spinor of the electrons. Given a beam of polarized electrons, the conductance of the same network depends on their polarization, allowing 'reading' the qubit information. |
Organised by | Dr. Vikram Tripathi |
PODCAST | click here to start |