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Lectures on Quantum Optics and Quantum Information

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« One Quadrature » Criteria<br />

Two beams, <strong>on</strong>e quadature<br />

Q<br />

Q<br />

Field 1 Field 2<br />

P<br />

- Difference between the fluctuati<strong>on</strong>s<br />

- Noise <strong>on</strong> this difference<br />

G=1 for two independent lasers (also<br />

for the previous case with noisy beam)<br />

- C<strong>on</strong>diti<strong>on</strong>al Variance V(P 1 |P 2 )<br />

P

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