So this post covers the SpinQ' upgraded desktop quantum computers. In addition to Gemini, there is a Gemini Mini, another 2-qubits portable NMR quantum computer and the third model is the Triangulum, a 3-qubits desktop NMR quantum computer.
Gemini product drops the Mini and attached screen, but doesn't add qubits., but allows it to perform more complex gate operations, with 1-qubit operations allowing up to 200 gates of depth, and 2-qubit operations allowing upwards of 20 gates while maintaining the quoted ">20 ms" coherence times. This product is aimed at more advanced quantum computing users because it's more complex and only includes six demo algorithms. Pricing is also more "advanced" - about five times so, at 5.72 million yen which translates to (~$41,510). It reminds me of an Alienware gaming desktop from years ago. With an Alienware-like enclosure, it measures 600 x 280 x 530 mm, consumes 100 W, and weighs 44 kg. So this model offers more gates, deeper circuits.
In comparison to the other two products, the Triangulum unit is a bit bigger and offers more power as well as a much higher price tag of (~$57,400). Three NMR spin qubits are housed within its 40 kg chassis, which measures 610 x 330 x 560mm (doubling Gemini's size).
As SpinQ designed the Triangulum for higher coherence times, more work can be completed before all work is lost when the spin qubits' states decohere. For now, in quantum world (and in NMR devices especially), something has to give: gate depth is lower than Gemini, only 40 gate depths on a single qubit and up to 8 gate depths on two or three qubits.
We get increased coherence and losing gate depth.
looking at the Superconducting or Ion Trapping methods, I am not fund of NMR's scaling capabilities. This device get you one more! qubit, but instead quantum noise had to be dealt with (less gate operations) and that is another sticky point of NMR methodology in general.
I forgot to mention, Triangulum's power consumption of 330 W probably doesn't help the system's coherence.
Although I am unsure if I want the second or third system, I opt for the Gemini Mini (the entry level) to test gate building and play with the algorithms included in the kit. I will cover the software interface in my next post, but I am still researching and seeking other reviews.
Click here to visit the SpinQ website