Talk on: Adiabatic Control of Solid State Spin Qubits

Abstract: Confined electron spins are preferred candidates for embodying quantum information in the solid state. A popular idea is the use of optical excitation to achieve the "best of both worlds'', i.e. marrying the long spin decoherence times with rapid gating. In this presentation, I will discuss adiabatic implementations of all-optical single and two qubit gates. The adiabatic approach offers crucial advantages over dynamic approaches: First, adiabatic gates can be can be extremely robust against the combined effect of all principal sources of decoherence even at finite temperature. Second, besides being less technically demanding, the approach is also applicable to a wider class of physical systems with a more general form of interaction between the qubits.