Tutorial: Quantum Information & Cold Atoms
Tutorial: Quantum Information & Cold Atoms
Tutorial: Quantum Information & Cold Atoms
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Concept 1: two-qubit gates via quantum databus<br />
- Entanglement via collective auxiliary quantum degree of freedom<br />
Collective mode<br />
1 2<br />
qubits<br />
quantum<br />
data bus<br />
switch<br />
Examples:<br />
Ion traps<br />
Cavity QED<br />
state vector:<br />
| cx|xN1xN2 x0 |collective mode<br />
x<br />
gate:<br />
quantum register data bus<br />
swap<br />
requirement: cooling of the collective mode (= prepare a pure state)<br />
16
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