TY - JOUR VL - 15 Y1 - 2003/07/16/ TI - Optically driven silicon-based quantum gates with potential for high-temperature operation IS - 27 A1 - Stoneham, AM A1 - Fisher, AJ A1 - Greenland, PT KW - SPIN KW - SPECTROSCOPY EP - L451 JF - J PHYS-CONDENS MAT PB - IOP PUBLISHING LTD ID - discovery10059 UR - http://dx.doi.org/10.1088/0953-8984/15/27/102 N1 - Text made available to UCL Discovery by kind permission of IOP Publishing, 2012 AV - public SN - 0953-8984 N2 - We propose a new approach to constructing gates for quantum information processing, exploiting the proper-ties of impurities in silicon. Quantum information, embodied in electron spins bound to deep donors, is coupled via optically induced electronic excitation. Gates are manipulated by magnetic fields and optical light pulses; individual gates are addressed by exploiting spatial and spectroscopic selectivity. Such quantum gates do not rely on small energy scales for operation, so might function at or near room temperature. We show the scheme can produce the classes of gates necessary to construct a universal quantum computer. SP - L447 ER -