Lectures on Quantum Optics and Quantum Information
Lectures on Quantum Optics and Quantum Information
Lectures on Quantum Optics and Quantum Information
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
How to Generate Squeezed Light ?<br />
Squeezed light generati<strong>on</strong> requires the use<br />
of n<strong>on</strong>-linear effects. We focus here <strong>on</strong> the<br />
case of degenerate parametric interacti<strong>on</strong> in<br />
n<strong>on</strong>-linear (2) crystals.<br />
pump<br />
signal<br />
idler<br />
‘Degenerate’: signal <strong>and</strong> idler<br />
identical (frequency, polarizati<strong>on</strong>)<br />
• Hamilt<strong>on</strong>ian associated to this process (down c<strong>on</strong>versi<strong>on</strong> <strong>and</strong> up c<strong>on</strong>versi<strong>on</strong>):<br />
• It leads to the temporal evoluti<strong>on</strong><br />
• This gives for the quadratures after the interacti<strong>on</strong> :<br />
One quadrature is amplified while the<br />
orthog<strong>on</strong>al <strong>on</strong>e is deamplified.<br />
Degenerate case
Change language