"Spin based all-optical quantum computation employing semiconducting
quantum dots"
Dr. Ehoud Pazy
Dept.
of Physics, Ben Gurion University
Solid-state implementation of quantum computation promises
scalability to a large number of qubits (two level systems)
and benefits from recent advances in fabrication and
characterization of quantum dots. Furthermore, using the
spin of an electron confined in a quantum nanostructureas the qubit degree of freedom seems highly promising
for quantum information processing due to its relatively long spin dephasing time. An all-optical method for
the implementation of quantum computation shall be presented, in which the quantum memory is represented by
the spin of an excess electron stored in a quantum dot and state selectivity is achieved via
conditional laser excitation exploiting Pauli exclusion principle. The main imperfections on the gate
performance, present in real quantum dots, shall be described and an adiabatic gate procedure that allows to
circumvent them shall be presented.
Host:
Dr. Ron Lifshitz, x5145
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