A quantum walk based search algorithm, and its optical realisation
A quantum walk based search algorithm, and its optical realisation
A quantum walk based search algorithm, and its optical realisation
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Discrete time <strong>quantum</strong> <strong>walk</strong> (coined QW)<br />
Focussing generalization on:<br />
Stochastic process → Unitary process<br />
Simple example<br />
Galton’s board (quincunx)<br />
at each pin: 50%-50% probability<br />
→ tossing a coin<br />
Resolution<br />
Replace classical coin by <strong>quantum</strong> coin!<br />
{|j〉 |v j 〉 : j = 1, . . . , degree(v j )}<br />
additional degree of freedom<br />
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