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Utilizing weak pump depletion to stabilize squeezed vacuum states

Denker, T.; Schutte, Dirk; Wimmer, M.H.; Wheatley, T.A.; Huntington, Elanor Harriet; Heurs, Michèle


We propose and demonstrate a pump-phase locking technique that makes use of weak pump depletion (WPD) - an unavoidable effect that is usually neglected - in a sub-threshold optical parametric oscillator (OPO). We show that the phase difference between seed and pump beam is imprinted on both light fields by the non-linear interaction in the crystal and can be read out without disturbing the squeezed output. In our experimental setup we observe squeezing levels of 1.96±0.01 dB, with an...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.23.016517
Access Rights: Open Access


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