Quantum devices perform operations using quantum bits, called ’qubits,’ (pictured) that can represent the two states corresponding to classic binary bits - a 0 or 1 - or a ’quantum superposition’ of both states simultaneously. Image: Christine Daniloff, MIT
Quantum devices perform operations using quantum bits, called 'qubits,' (pictured) that can represent the two states corresponding to classic binary bits - a 0 or 1 - or a 'quantum superposition' of both states simultaneously. Image: Christine Daniloff, MIT System "recruits" defects that usually cause disruptions, using them to instead carry out quantum operations. In an advance that may help researchers scale up quantum devices, an MIT team has developed a method to "recruit" neighboring quantum bits made of nanoscale defects in diamond, so that instead of causing disruptions they help carry out quantum operations. Quantum devices perform operations using quantum bits, called "qubits," that can represent the two states corresponding to classic binary bits - a 0 or 1 - or a "quantum superposition" of both states simultaneously. The unique superposition state can enable quantum computers to solve problems that are practically impossible for classical computers, potentially spurring breakthroughs in biosensing, neuroimaging, machine learning, and other applications. One promising qubit candidate is a defect in diamond, called a nitrogen-vacancy (NV) center, which holds electrons that can be manipulated by light and microwaves. In response, the defect emits photons that can carry quantum information.
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