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Neutral atom6/16/2023 ![]() McDonald said, “I referred to the system as Software Configurable Dynamic Lasers because the software allows you to control the phase and amplitude of individual lasers and then imprint that information onto the qubits."Ītom researchers plan to refine and improve this capability for potential inclusion in future quantum computing architectures. Atom Computing demonstrated this with a 21-qubit array consisting of 3 columns of 7 qubits each.ĭr. The development consisted of a software-controlled laser scheme that performs arbitrary operations on multiple or individual qubits in a column or a row. The researchers at Atom Computing also developed an equally important quantum capability, which was part of the published research paper but largely ignored by the media. Source: Assembly and coherent control of a register of nuclear spin qubits Nature Communications, K. We can then manipulate that two-level system by applying two-photon transitions to the atom.”Īrbitrary operations on qubits in parallelĭiagram showing a 3x7 array used to demonstrate arbitrary operations on parallel qubits. McDonald said, “we work hard with strontium 87 to turn a naturally occurring ten-level system into an engineered two-level system. Driving a coherent operation for both ground states, place the qubit in a superposition of 1 and 0, readying it for use. The length of time the lasers are applied, as well as their relative phases, control the resulting superposition state of the qubit. Moving from one state to the other requires an operation called a two-photon transition which is accomplished by simultaneous application of two lasers that shift the qubit from one spin state to the other. ![]() Two electronic states defined by the nuclear spin of the strontium-87 atom represent the zero and one states of the qubit. Thanks to the nature of neutral atoms, a laser can push the unwanted eight levels off to the side, leaving two desired levels intact and available for manipulation. However, a spin qubit only needs a level to represent the quantum state of 1 and a level to represent the quantum state of 0. Strontium-87 has an atomic structure with ten nuclear spin levels.
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