50
nanotimes News in Brief
11-01 :: December 2010 / January 2011
Quantum Computer // Better Control of Building Blocks for Quantum Computer
Left: Artist‘s impression of nanowire qubits.
Bottom: Artist’s impression of the spin-orbit qubit. Like in a yo-yo toy, by moving the electron one controls its spin. © Gemma Plum/Delft University
S
cientists from the Kavli Institute of Nanoscience at Delft University of Technology and Eindho-
ven University of Technology have succeeded in controlling the building blocks of a future super- fast quantum computer. They are now able to ma- nipulate these building blocks (qubits) with electrical rather than magnetic fields, as has been the common practice up till now. They have also been able to em-
bed these qubits into semiconductor nanowires. Until now, the spin of an electron has been con- trolled by magnetic fields. However, these field are extremely difficult to generate on a chip. The elec- tron spin in the qubits that are currently being gene- rated by the Dutch scientists can be controlled by a charge or an electric field, rather than by magnetic fields. This form of control has major advantages, as
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95