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Quantum circuit design / quantum archi­tec­ture search

Instead of humans desig­ning circuits, QAS uses automa­ted algorithms to disco­ver the most effici­ent arran­ge­ment of gates. This minimi­zes noise and maximi­zes perfor­mance for a speci­fic task, similar to how AutoML works in classi­cal AI.

Topics in the Subfield Founda­ti­ons:

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Quantum Comple­xity Theory (e.g. BQP)

This field classi­fies how diffi­cult compu­ta­tio­nal problems are for quantum compu­ters. It focuses on…

Dequan­tiza­tion (e.g. dynami­cal Lie algebra)

When an exponen­tial speedup over classi­cal methods is claimed for a quantum algorithm, resear­chers seek to deter­mine whether…

Measu­res and metrics for quantum advan­tage (e.g. magic, entan­gle­ment) and explainability

To demons­trate that a quantum compu­ter is “better” than classi­cal compu­ta­tio­nal methods, metrics such as…

Circuit cutting and circuit knitting

To execute a large program on limited hardware, circuit cutting and circuit knitting techni­ques are used, in which…

Quantum Tomogra­phy Methods

Quantum tomogra­phy methods are proce­du­res for recon­s­truc­ting the unknown state of a quantum system or the…

Classi­cal optimi­zers (e.g. quantum natural descent)

Even on quantum hardware, the “brain” that drives the optimiza­tion is typically…

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