Quantum temporal imaging with squeezed light

Patera, G.; Horoshko, D. B.; Shi, J.; Kolobov, M.

Document type :

Autre communication scientifique (congrès sans actes - poster - séminaire...): Communication dans un congrès avec actes

DOI :

10.1117/12.2307360

Title :

Quantum temporal imaging with squeezed light

Author(s) :

Patera, G. [Auteur]
Horoshko, D. B. [Auteur]
Shi, J. [Auteur]
Kolobov, M. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Conference title :

QUANTUM TECHNOLOGIES 2018

City :

Starsbourg

Country :

France

Start date of the conference :

2018

Publication date :

2018

HAL domain(s) :

Physique [physics]/Physique Quantique [quant-ph]

English abstract : [en]

Temporal imaging is a technique enabling manipulation of temporal optical signals in a manner similar to manipulation of optical images in spatial domain. The quantum description of temporal imaging is relevant in the ...
Show more >Temporal imaging is a technique enabling manipulation of temporal optical signals in a manner similar to manipulation of optical images in spatial domain. The quantum description of temporal imaging is relevant in the context of long range quantum communication. Indeed this technology relies on the efficiency of quantum repeaters for which the temporal mode matching between the quantum emitters, the communication network and the quantum memories is critical. In this work we address the problem of temporal imaging of a temporally broadband squeezed light generated by a traveling-wave optical parametric amplifier. We consider a single-lens temporal imaging system formed by two dispersive elements and a parametric temporal lens, based on a nonlinear process such as sum-frequency generation or four-wave mixing. We derive a unitary transformation of the field operators performed by this kind of time lens and evaluate the squeezing spectrum at the output of the single-lens imaging system. When the efficiency factor of the temporal lens is smaller than unity, the vacuum fluctuations deteriorate squeezing at its output. For efficiency close to unity, when certain imaging conditions are satisfied, the squeezing spectrum at the output of the imaging system will be the same as that at the output of the OPA in terms of the scaled frequency Omega' = M Omega which corresponds to the scaled time t' = t/M. The magnification factor M gives the possibility of matching the coherence time of the broadband squeezed light to the response time of the photodetector.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Comment :

Conference on Quantum Technologies, Strasbourg, FRANCE, APR 23-25, 2018

Collections :