![]() Moreover, a neutral atom has little affinity for other atoms, making the qubits less susceptible to noise. That contributes to its stability and relatively long coherence time in a range greater than 40 seconds compared to a millisecond for superconducting or a few seconds for ion-trapping systems. Since Atom Computing’s neutral atom qubits are natural rather than manufactured, no adjustments are needed to compensate for differences between qubits. ![]() The length of time that a qubit can retain its quantum state is its coherence time. Qubits need to remain in a quantum state long enough to complete computations. Atom Computing uses the isotope Strontium-87 and takes advantage of its unique energy levels to create spin qubits. These differences in neutrons produce different energy levels in the atom. However, isotopes of Strontium have varying numbers of neutrons. At the atomic level, neutral atoms have equal numbers of protons and electrons. The Phoenix platform uses a specific type of nuclear-spin qubits created from an isotope of Strontium, a naturally occurring element. In contrast, Psi Quantum and Xanadu use photons of light.Ītom computing chose to use different technology - nuclear-spin qubits made from neutral atoms. Phoenix, the name of Atom’s first-generation, gate-based quantum computer platform, uses 100 optically trapped qubits.įirst-Generation Quantum Computer, “Phoenix”, Berkeley, Atom Computing Honeywell and IonQ both use trapped-ion qubits made from a rare earth metal called ytterbium. Although Amazon doesn’t yet have a quantum computer, it plans to build one using superconducting hardware. ![]() IBM uses superconducting qubits on its huge fleet of about twenty quantum computers. But regardless of the technology, a common requirement for all quantum computing qubits is that it must be scalable, high quality, and capable of fast quantum interaction with each other. Today’s quantum computers use several different technologies for qubits. While traditional computers use magnetic bits to represent a one or a zero for computation, quantum computers use quantum bits or qubits to represent a one or a zero or simultaneously any number in between.
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