US 7,321,131 B2
Universal gates for ising TQFT via time-tilted interferometry
Michael H. Freedman, Redmond, Wash. (US); and Chetan V. Nayak, Santa Monica, Calif. (US)
Assigned to Microsoft Corporation, Redmond, Wash. (US)
Filed on Oct. 07, 2005, as Appl. No. 11/245,964.
Prior Publication US 2007/0080339 A1, Apr. 12, 2007
Int. Cl. H01L 29/06 (2006.01); H01L 21/00 (2006.01)
U.S. Cl. 257—9  [257/12; 257/14; 257/E27.005; 438/800] 20 Claims
OG exemplary drawing
 
1. A logical gate for a quantum computer, the logical gate comprising:
an input current source for injecting an input current into a first edge of a fractional quantum Hall effect (FQHE) fluid;
an output current source for removing an output current drained from a second edge of the FQHE fluid;
a first antidot defined by a first absence of FQHE fluid;
a second antidot defined by a second absence of FQHE fluid;
a voltage supply for adjusting an electrical potential confining the FQHE fluid to form a Polyakov loop between the antidots;
means for determining from the output current a quantum state of the Polyakov loop.