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This research demonstrates a significant breakthrough in quantum computing stability by using periodic driving to enhance gate fidelity four-fold against environmental noise. By precisely manipulating geometric phases in open quantum systems, the Boston University team effectively shields qubits from decoherence while amplifying desired state changes. This advancement addresses a fundamental challenge in scaling quantum hardware, moving beyond static control methods to offer greater adaptability for future fault-tolerant devices.
Boston University Steers Qubit Phase with Tailored Drives
Can an oscillating force simultaneously shield *and* amplify subtle changes in a qubit’s behaviour caused by its environment? Periodic driving now demonstrates control over these geometric phase deformations within open quantum systems, moving beyond static methods reliant on symmetry breaking previously shown by Wang et al. and Villar & Soba.
Controlling how quantum systems interact with their environment remains a key challenge in building strong technologies. A team at Boston University has revealed a new method using periodic driving, repeatedly applying an energy pulse, to manipulate the geometric phase within open quantum systems. Manipulating periodic energy pulses affects quantum systems interacting with their surroundings. Repeated application of these ‘drives’ controls changes to fundamental…
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