Process Tomography of a Silicon Quantum Memory

29 January, 2015 @ 4:00 pm

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Long coherence times and fast manipulation are two desirable qualities of a qubit that for many systems are mutually incompatible. Storing quantum information in an ancillary qubit, i.e. a `quantum memory’, is a strategy to address this issue. It is a advantageous property of donor impurities in silicon to have qubits of both qualities in a single lattice site. This talk will present results of the storage and retrieval of quantum information from a single donor electron spin to its host phosphorus nucleus in isotopically-enriched $^{28}$Si. We demonstrate a high fidelity memory process characterised via both state and process tomography. A tutorial-style introduction to state and process tomography will precede the results.

Details

Date:
29 January, 2015
Time:
4:00 pm

Venue

Newton Building, UNSW
CQC2T Conference Room, Level 2, Newton Building J12, UNSW Kensington Campus NSW Australia

Organizer

University of New South Wales