Abstract

We show that parametric image amplification can be used to achieve a 2D radiance map directly expressed in photons per spatiotemporal mode. Radiance images of incoherent signals with less than one photon per mode (typically 102) are resolved.

© 2007 Optical Society of America

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References

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    [CrossRef]
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    [CrossRef]

2006 (1)

S. Brustlein, F. Devaux, and E. Lantz, J. Mod. Opt. 53, 799 (2006).
[CrossRef]

1998 (2)

G. Brida, S. Castelletto, C. Novero, and M. Rastello, Metrologia 35, 247 (1998).
[CrossRef]

A. Migdall, R. U. Datla, A. Sergienko, J. S. Orszak, and Y. H. Shih, Appl. Opt. 37, 3345 (1998).
[CrossRef]

1993 (1)

1991 (1)

1987 (1)

Abram, I.

Brida, G.

G. Brida, S. Castelletto, C. Novero, and M. Rastello, Metrologia 35, 247 (1998).
[CrossRef]

Brustlein, S.

S. Brustlein, F. Devaux, and E. Lantz, J. Mod. Opt. 53, 799 (2006).
[CrossRef]

Castelletto, S.

G. Brida, S. Castelletto, C. Novero, and M. Rastello, Metrologia 35, 247 (1998).
[CrossRef]

Datla, R. U.

Devaux, F.

S. Brustlein, F. Devaux, and E. Lantz, J. Mod. Opt. 53, 799 (2006).
[CrossRef]

Grangier, Ph.

Lantz, E.

S. Brustlein, F. Devaux, and E. Lantz, J. Mod. Opt. 53, 799 (2006).
[CrossRef]

Levenson, J. A.

Migdall, A.

Novero, C.

G. Brida, S. Castelletto, C. Novero, and M. Rastello, Metrologia 35, 247 (1998).
[CrossRef]

Orszak, J. S.

Penin, A. N.

Rarity, J. G.

Rastello, M.

G. Brida, S. Castelletto, C. Novero, and M. Rastello, Metrologia 35, 247 (1998).
[CrossRef]

Ridley, K. D.

Rivera, Th.

Sergienko, A.

Shih, Y. H.

Tapster, P. R.

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Figures (3)

Fig. 1
Fig. 1

Experimental setup: absorbing filters, F 1 , 2 ; interferential filters, I F 1 , 2 ; dichroic mirrors, D ( T max = 710 nm , R max = 355 nm ); spatial filter, SF.

Fig. 2
Fig. 2

Spatial frequency spectra at 700 nm : (a) SPDC only and (b) idler with SPDC. The spatial frequency contribution of the idler delimited by the SF is represented by the dotted circle. (c) Two-dimensional radiance map of the input signal.

Fig. 3
Fig. 3

Near-field images at 700 nm : (a) and (e) of the SPDC only and (b) and (f) idler with SPDC at the crystal input. (c) and (g) Subtraction of the background noise to retrieve spatial information. (d) and (h) 2D radiance maps of the input signal.

Equations (7)

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a ̂ out = a ̂ in cosh ( g L ) + j b ̂ in sinh ( g L ) ,
b ̂ out = b ̂ in cosh ( g L ) + j a ̂ in sinh ( g L ) ,
n ¯ signal i n = a ̂ i n a ̂ i n .
n ¯ signal o u t = a ̂ o u t a ̂ o u t = cosh 2 ( g L ) ( n ¯ signal i n ) + sinh 2 ( g L ) = G n ¯ signal i n + ( G 1 ) ,
n ¯ idler o u t = b ̂ o u t b ̂ o u t = sinh 2 ( g L ) ( n ¯ signal i n ) + sinh 2 ( g L ) = ( G 1 ) ( n ¯ signal i n ) + ( G 1 ) ,
n ̂ S P D C = sinh 2 ( g L ) = G 1 .
n ¯ signal i n = n ¯ idler o u t n ¯ S P D C n ¯ S P D C .

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