Will D-Wave Systems Produce A Robust Quantum Computer?

In a prior post entitled Emergence of 'Super-Quant' Funds, I enunciated that D-Wave Systems, a precocious Canadian start-up, is currently at an advanced stage of creating a cutting-edge processor that uses a computational model known as adiabatic quantum computing (AQC), to solve complex search and optimization problems. If everything progresses smoothly, D-Wave Systems-created quantum computing solutions should be commercially available in the foreseeable future.

Underpinning the tremendous computational puissance of D-Wave Systems' computing solutions, is a processor that is fabricated using a super-conducting metal called niobium. When chilled to near absolute-zero temperatures, specifically when it is chilled to a temperature of 9.2 Kelvin, niobium loses all its electrical resistance and starts to behave like matter at its most rudimentary level, i.e quantum mechanically. Hence, this super-conducting property of niobium allows D-Wave Systems to fashion 'normal-sized' circuits, using currently-existing lithography technology, that operate using the principles of quantum mechanics (when chilled to ~9.2 Kelvin), i.e. they behave like 'circuits of atoms'.

This all resonated well with me until I encountered Sir Roger Penrose's Interpretation (The Penrose Interpretation) about the mass-scale at which standard quantum mechanics will fail. According to a Wikipedia Entry:

• "Penrose's idea is a variant of objective collapse theory. In these theories the wavefunction is a physical wave, which undergoes wave function collapse as a random process, with observers playing no special role. Penrose suggests that the threshold for wave function collapse is when superpositions involve at least a Planck mass worth of matter. He then hypothesizes that some fundamental gravitational event occurs, causing the wavefunction to choose one branch of reality over another. The exact way in which this choice happens he doesn't specify in any mathematically precise way.

  Accepting that wavefunctions are physically real, Penrose believes that things can exist in more than one place at one time. In his view, a macroscopic system, like a human being, cannot exist in more than one position because it has a significant gravitational field. A microscopic system, like an electron, has an insignificant gravitational field, and can exist in more than one location almost indefinitely."

Hence, this implies that any system above the Planck Mass, which is ~1e-8kg (According to Suzanne Gildert), fails to maintain coherence for any measurable amount time, due to the onset of gravitational interactions. Thus, this means that the mass of a system has a bearing, or an impact, on its ability to maintain quantum coherence.

According to Suzanne Gildert, one molecule of a niobium contains ~ 6e23 conduction electrons which have a mass of ~ 5e-7 kg. Since 5e-7 kg > 1e-8kg, any macro system fashioned from niobium may fail to maintain quantum coherence because of the onset of gravitational interactions. Hence the question (which is the title of this post): Will D-Wave Systems Produce A Robust Quantum Computer?

In my opinion: The D-Wave Systems' quantum computing solution has better chances of maintaining quantum coherence (being robust) in a zero-gravity chamber!