Both companies are developing promising technology, but are burning significant cash.IonQ (IONQ 7.67%) and Rigetti Computing (RGTI 8.69%) are two of the more prominent publicly traded stocks in the field of quantum computing.NYSE : IONQIonQToday's Change( -7.67 %) $-3.82Current Price$ 46.00Key Data PointsMarket Cap$16BDay's Range$ 45.76 - $49.6852wk Range$ 17.88 - $ 84.64Volume20MAvg Vol27MGross Margin-747.41 %What do they do?Without wading too deep into the weeds of quantum computing, the main difference ...