Erlangen 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 7: Quantum Information (Quantum Computing)
Q 7.7: Vortrag
Montag, 5. März 2018, 12:15–12:30, K 1.020
Fault-tolerant interface between quantum memories and quantum processors — •Hendrik Poulsen Nautrup1, Nicolai Friis1,2, and Hans J. Briegel1 — 1Institute for Theoretical Physics, University of Innsbruck, Technikerstr. 21a, 6020 Innsbruck, Austria — 2Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria
Quantum computation holds the promise to solve computational problems believed to be unsolvable on classical computers. Yet, before we can discuss solving problems on a quantum computer, we have to be able to build one. The major obstacles for any near-term implementation are noise and decoherence. Thus, in order to protect quantum computations from the deteriorating effects of noise, we need to encode qubits into error correction codes. And different codes can serve different purposes: Some codes will be the basis for a quantum memory, others that of a processor. To exploit the particular advantages of different codes for fault-tolerant quantum computation, it is necessary to be able to switch between them. We propose a practical solution, subsystem lattice surgery, which requires only two-body nearest neighbor interactions in a fixed layout in addition to the indispensable error correction. This method can be employed to create a simple interface, a quantum bus, between noise resilient surface code memories and flexible color code processors in a near-term implementation.