  It is theoretically possible to combine several Hall bars in arrays to define
new quantum standards with perfectly quantized resistance values. We have thus,
for the first time, developed and fabricated novel Quantum Hall Array
Resistance Standards (QHARS) made of a large number N (N=100, 50) of Hall bars
placed in parallel using a triple connections technique. The Hall resistance of
these quantum standards is found to be very well quantized. On the i=2 Hall
plateau, the resistance of specific good arrays stays equal to RK/2N within 5
parts in 10^9 for supplying currents up to 2 mA at a 1.3 K temperature. The
mean longitudinal resistance of the Hall bars which constitute the arrays has
been determined through the analysis of the array equivalent electrical
circuit. This measurement shows that the carrier transport in the Hall bars is
dissipation-less. This work therefore demonstrates the efficiency of the
multiple connections technique and consequently that QHARS are likely to extend
the QHE metrological applications.
