Physics – Quantum Physics
Scientific paper
2000-03-08
Physics
Quantum Physics
Submitted to Fortschritte der Physik Special Issue on Experimental Proposals for Quantum Computation
Scientific paper
An architecture for a quantum computer is presented in which spins associated with donors in silicon function as qubits. Quantum operations on the spins are performed using a combination of voltages applied to gates adjacent to the spins and radio frequency applied magnetic fields resonant with spin transitions. Initialization and measurement of electron spins is made by electrostatic probing of a two electron system, whose orbital configuration must depend on the spin states of the electrons because of the Pauli Principle. Specific devices will be discussed which perform all the necessary operations for quantum computing, with an emphasis placed on the qualitative principles underlying their operation. The likely impediments to achieving large-scale quantum computation using this architecture will be addressed: the computer must operate at extremely low temperature, must be fabricated from devices built with near atomic precision, and will require extremely accurate gating operations in order to perform quantum logic. Refinements to the computer architecture will be presented which could remedy each of these deficiencies. I will conclude by discussing a specific realization of the computer using Si/SiGe heterostructures into which donors are deposited using a low energy focused ion beam.
No associations
LandOfFree
Silicon-based Quantum Computation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Silicon-based Quantum Computation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silicon-based Quantum Computation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-144392