Tutorial: Quantum Information & Cold Atoms
Tutorial: Quantum Information & Cold Atoms
Tutorial: Quantum Information & Cold Atoms
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<strong>Cold</strong> controlled collisions<br />
• consider two atoms in different internal states stored e.g. in an optical<br />
lattice<br />
• we move the lattice in a state dependent way, and induce a collision:<br />
the collision is sufficiently slow not to excite oscillations<br />
before ...<br />
during ...<br />
after collision<br />
atom 1 atom 2<br />
• phase gate via collisions ...<br />
cold atoms<br />
on site interaction =<br />
phase shift<br />
(coherent collision)<br />
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