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Tutorial: Quantum Information & Cold Atoms

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Ramsey method<br />

|0 |1<br />

π /<br />

π /<br />

2<br />

2<br />

#ofatomsin|0<br />

|0 1<br />

2<br />

P0T cos 1<br />

2 L 0T 2<br />

|0 |1<br />

1<br />

2 |0 e i L 0t |1<br />

cos 1<br />

2 L 0t|0 sin 1<br />

2 L 0t<br />

y<br />

<br />

/2<br />

Nb<br />

/2 <br />

0T<br />

x<br />

L 0T<br />

x<br />

x<br />

Bloch picture<br />

z<br />

|0<br />

z<br />

y<br />

y<br />

y<br />

50

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