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decoherence

/ ˌdiːkəʊˈhɪərəns /

noun

  1. physics the process in which a system's behaviour changes from that which can be explained by quantum mechanics to that which can be explained by classical mechanics
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Example Sentences

"But there are significant challenges to overcome. With quantum computing, for instance, we are working on maintaining quantum coherence, which means keeping a quantum system intact; error correction, which means detecting and correcting errors caused by decoherence; and scalability, which means being able to increase the number of qubits in a quantum system to solve more complex problems."

From BBC

But as the name suggests, the device amplifies weak signals picked up from the qubits to conduct the readout, which causes unwanted noise and can lead to decoherence of the qubits if not protected by additional large components.

Topological quantum computers further improve upon quantum computing by taking advantage of how electrical properties are organized to make the computers robust to decoherence, or the loss of information that happens when a quantum system is not perfectly isolated.

In most traditional quantum dots, electron spin decoherence can be caused by the spin-orbit interaction, which introduces an unwanted coupling between the electron spin and the vibrations of the host lattice, and the hyperfine interaction between the electron spin and the surrounding nuclear spins.

That is because a quantum state will collapse, a process called decoherence, if the object interacts with its environment.

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