Speaker
Aharon Brodutch
(Univesity of Waterloo)
Description
NMR ensemble quantum processors can be used for implementing a universal quantum circuit with a limited number of qubits using current technologies. The computation is carried out with high fidelity over a large number of processors (individual molecules) in parallel and the readout corresponds to ensemble averages of single-qubit observables. This type of readout poses a obstacle when the algorithm requires post-processing on individual outcomes, for example in the case of weak measurements with post-selection. We present a method for overcoming the challenge of post-selection in an ensemble processor and show experimental results of the first weak measurement in NMR. The experiment involves 3 qubits but can be extended to larger systems of up to 12 qubits using conventional methods. These extensions may be useful for carrying out weak measurements experiments that cannot be done with the more common optical setup.
* arXiv:1311.5890
Author
Aharon Brodutch
(Univesity of Waterloo)
Co-authors
Dr
Dawei Lu
(University of Waterloo)
Mr
Hang Li
(Tsinghua University)
Mr
Jun li
(University of science and technology China)
Prof.
Raymond Laflamme
(University of Waterloo)
