Abstract

Frequency correlation (or decorrelation) of photon pairs is of great importance in long-range quantum communications and photonic quantum computing. We experimentally characterize a spontaneous parametric downconversion source, based on a β-barium borate crystal cut for type-II phase matching at 1550 nm, which has the capability to emit photons with positive or no spectral correlations. Our system employs a carefully designed detection method exploiting two InGaAs detectors.

© 2013 Optical Society of America

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  1. A. Dragan, Phys. Rev. A 70, 053814 (2004).
    [CrossRef]
  2. Y.-H. Kim and W. P. Grice, Opt. Lett. 30, 908 (2005).
    [CrossRef]
  3. W. Wasilewski, P. Wasylczyk, P. Kolenderski, K. Banaszek, and C. Radzewicz, Opt. Lett. 31, 1130 (2006).
    [CrossRef]
  4. H. S. Poh, C. Y. Lum, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 75, 043816 (2007).
    [CrossRef]
  5. H. S. Poh, J. Lim, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 80, 043815 (2009).
    [CrossRef]
  6. C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
    [CrossRef]
  7. A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
    [CrossRef]
  8. A. B. U’Ren, Y. Jeronimo-Moreno, and H. Garcia-Gracia, Phys. Rev. A 75, 023810 (2007).
    [CrossRef]
  9. C. I. Osorio, A. Valencia, and J. P. Torres, New J. Phys. 10, 113012 (2008).
    [CrossRef]
  10. P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
    [CrossRef]
  11. P. Kolenderski, W. Wasilewski, and K. Banaszek, Phys. Rev. A 80, 013811 (2009).
    [CrossRef]
  12. A. Eckstein, A. Christ, P. J. Mosley, and C. Silberhorn, Phys. Rev. Lett. 106, 013603 (2011).
    [CrossRef]
  13. O. Kuzucu, M. Fiorentino, M. A. Albota, F. N. Wong, and F. X. Kärtner, Phys. Rev. Lett. 94, 083601 (2005).
    [CrossRef]
  14. M. Hendrych, M. Micuda, and J. P. Torres, Opt. Lett. 32, 2339 (2007).
    [CrossRef]
  15. A. Valencia, A. Ceré, X. Shi, G. Molina-Terriza, and J. P. Torres, Phys. Rev. Lett. 99, 243601 (2007).
    [CrossRef]
  16. Y.-H. Kim and W. P. Grice, J. Mod. Opt. 49, 2309 (2002).
    [CrossRef]
  17. Z. Yan, D. Hamel, A. Heinrichs, X. Jiang, M. Itzler, and T. Jennewein, Rev. Sci. Instrum. 83, 073105 (2012).
    [CrossRef]
  18. M. Avenhaus, A. Eckstein, P. J. Mosley, and C. Silberhorn, Opt. Lett. 34, 2873 (2009).
    [CrossRef]
  19. P. Kolenderski and W. Wasilewski, Phys. Rev. A 80, 015801 (2009).
    [CrossRef]

2012 (1)

Z. Yan, D. Hamel, A. Heinrichs, X. Jiang, M. Itzler, and T. Jennewein, Rev. Sci. Instrum. 83, 073105 (2012).
[CrossRef]

2011 (1)

A. Eckstein, A. Christ, P. J. Mosley, and C. Silberhorn, Phys. Rev. Lett. 106, 013603 (2011).
[CrossRef]

2010 (1)

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

2009 (4)

H. S. Poh, J. Lim, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 80, 043815 (2009).
[CrossRef]

P. Kolenderski, W. Wasilewski, and K. Banaszek, Phys. Rev. A 80, 013811 (2009).
[CrossRef]

P. Kolenderski and W. Wasilewski, Phys. Rev. A 80, 015801 (2009).
[CrossRef]

M. Avenhaus, A. Eckstein, P. J. Mosley, and C. Silberhorn, Opt. Lett. 34, 2873 (2009).
[CrossRef]

2008 (2)

C. I. Osorio, A. Valencia, and J. P. Torres, New J. Phys. 10, 113012 (2008).
[CrossRef]

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef]

2007 (4)

A. B. U’Ren, Y. Jeronimo-Moreno, and H. Garcia-Gracia, Phys. Rev. A 75, 023810 (2007).
[CrossRef]

H. S. Poh, C. Y. Lum, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 75, 043816 (2007).
[CrossRef]

A. Valencia, A. Ceré, X. Shi, G. Molina-Terriza, and J. P. Torres, Phys. Rev. Lett. 99, 243601 (2007).
[CrossRef]

M. Hendrych, M. Micuda, and J. P. Torres, Opt. Lett. 32, 2339 (2007).
[CrossRef]

2006 (1)

2005 (3)

O. Kuzucu, M. Fiorentino, M. A. Albota, F. N. Wong, and F. X. Kärtner, Phys. Rev. Lett. 94, 083601 (2005).
[CrossRef]

Y.-H. Kim and W. P. Grice, Opt. Lett. 30, 908 (2005).
[CrossRef]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
[CrossRef]

2004 (1)

A. Dragan, Phys. Rev. A 70, 053814 (2004).
[CrossRef]

2002 (1)

Y.-H. Kim and W. P. Grice, J. Mod. Opt. 49, 2309 (2002).
[CrossRef]

Albota, M. A.

O. Kuzucu, M. Fiorentino, M. A. Albota, F. N. Wong, and F. X. Kärtner, Phys. Rev. Lett. 94, 083601 (2005).
[CrossRef]

Avenhaus, M.

Banaszek, K.

P. Kolenderski, W. Wasilewski, and K. Banaszek, Phys. Rev. A 80, 013811 (2009).
[CrossRef]

W. Wasilewski, P. Wasylczyk, P. Kolenderski, K. Banaszek, and C. Radzewicz, Opt. Lett. 31, 1130 (2006).
[CrossRef]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
[CrossRef]

Brecht, B.

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

Ceré, A.

A. Valencia, A. Ceré, X. Shi, G. Molina-Terriza, and J. P. Torres, Phys. Rev. Lett. 99, 243601 (2007).
[CrossRef]

Christ, A.

A. Eckstein, A. Christ, P. J. Mosley, and C. Silberhorn, Phys. Rev. Lett. 106, 013603 (2011).
[CrossRef]

Dragan, A.

A. Dragan, Phys. Rev. A 70, 053814 (2004).
[CrossRef]

Eckstein, A.

A. Eckstein, A. Christ, P. J. Mosley, and C. Silberhorn, Phys. Rev. Lett. 106, 013603 (2011).
[CrossRef]

M. Avenhaus, A. Eckstein, P. J. Mosley, and C. Silberhorn, Opt. Lett. 34, 2873 (2009).
[CrossRef]

Erdmann, R.

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
[CrossRef]

Fiorentino, M.

O. Kuzucu, M. Fiorentino, M. A. Albota, F. N. Wong, and F. X. Kärtner, Phys. Rev. Lett. 94, 083601 (2005).
[CrossRef]

Garcia-Gracia, H.

A. B. U’Ren, Y. Jeronimo-Moreno, and H. Garcia-Gracia, Phys. Rev. A 75, 023810 (2007).
[CrossRef]

Grice, W. P.

Y.-H. Kim and W. P. Grice, Opt. Lett. 30, 908 (2005).
[CrossRef]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
[CrossRef]

Y.-H. Kim and W. P. Grice, J. Mod. Opt. 49, 2309 (2002).
[CrossRef]

Hamel, D.

Z. Yan, D. Hamel, A. Heinrichs, X. Jiang, M. Itzler, and T. Jennewein, Rev. Sci. Instrum. 83, 073105 (2012).
[CrossRef]

Heinrichs, A.

Z. Yan, D. Hamel, A. Heinrichs, X. Jiang, M. Itzler, and T. Jennewein, Rev. Sci. Instrum. 83, 073105 (2012).
[CrossRef]

Hendrych, M.

Itzler, M.

Z. Yan, D. Hamel, A. Heinrichs, X. Jiang, M. Itzler, and T. Jennewein, Rev. Sci. Instrum. 83, 073105 (2012).
[CrossRef]

Jennewein, T.

Z. Yan, D. Hamel, A. Heinrichs, X. Jiang, M. Itzler, and T. Jennewein, Rev. Sci. Instrum. 83, 073105 (2012).
[CrossRef]

Jeronimo-Moreno, Y.

A. B. U’Ren, Y. Jeronimo-Moreno, and H. Garcia-Gracia, Phys. Rev. A 75, 023810 (2007).
[CrossRef]

Jiang, X.

Z. Yan, D. Hamel, A. Heinrichs, X. Jiang, M. Itzler, and T. Jennewein, Rev. Sci. Instrum. 83, 073105 (2012).
[CrossRef]

Joly, N. Y.

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

Kärtner, F. X.

O. Kuzucu, M. Fiorentino, M. A. Albota, F. N. Wong, and F. X. Kärtner, Phys. Rev. Lett. 94, 083601 (2005).
[CrossRef]

Kim, Y.-H.

Y.-H. Kim and W. P. Grice, Opt. Lett. 30, 908 (2005).
[CrossRef]

Y.-H. Kim and W. P. Grice, J. Mod. Opt. 49, 2309 (2002).
[CrossRef]

Kolenderski, P.

P. Kolenderski and W. Wasilewski, Phys. Rev. A 80, 015801 (2009).
[CrossRef]

P. Kolenderski, W. Wasilewski, and K. Banaszek, Phys. Rev. A 80, 013811 (2009).
[CrossRef]

W. Wasilewski, P. Wasylczyk, P. Kolenderski, K. Banaszek, and C. Radzewicz, Opt. Lett. 31, 1130 (2006).
[CrossRef]

Kurtsiefer, C.

H. S. Poh, J. Lim, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 80, 043815 (2009).
[CrossRef]

H. S. Poh, C. Y. Lum, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 75, 043816 (2007).
[CrossRef]

Kuzucu, O.

O. Kuzucu, M. Fiorentino, M. A. Albota, F. N. Wong, and F. X. Kärtner, Phys. Rev. Lett. 94, 083601 (2005).
[CrossRef]

Lamas-Linares, A.

H. S. Poh, J. Lim, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 80, 043815 (2009).
[CrossRef]

H. S. Poh, C. Y. Lum, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 75, 043816 (2007).
[CrossRef]

Lim, J.

H. S. Poh, J. Lim, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 80, 043815 (2009).
[CrossRef]

Lum, C. Y.

H. S. Poh, C. Y. Lum, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 75, 043816 (2007).
[CrossRef]

Lundeen, J. S.

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef]

Marcikic, I.

H. S. Poh, J. Lim, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 80, 043815 (2009).
[CrossRef]

H. S. Poh, C. Y. Lum, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 75, 043816 (2007).
[CrossRef]

Micuda, M.

Molina-Terriza, G.

A. Valencia, A. Ceré, X. Shi, G. Molina-Terriza, and J. P. Torres, Phys. Rev. Lett. 99, 243601 (2007).
[CrossRef]

Mosley, P. J.

A. Eckstein, A. Christ, P. J. Mosley, and C. Silberhorn, Phys. Rev. Lett. 106, 013603 (2011).
[CrossRef]

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

M. Avenhaus, A. Eckstein, P. J. Mosley, and C. Silberhorn, Opt. Lett. 34, 2873 (2009).
[CrossRef]

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef]

Osorio, C. I.

C. I. Osorio, A. Valencia, and J. P. Torres, New J. Phys. 10, 113012 (2008).
[CrossRef]

Podlipensky, A.

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

Poh, H. S.

H. S. Poh, J. Lim, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 80, 043815 (2009).
[CrossRef]

H. S. Poh, C. Y. Lum, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 75, 043816 (2007).
[CrossRef]

Radzewicz, C.

Raymer, M. G.

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
[CrossRef]

Russell, P. S. J.

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

Shi, X.

A. Valencia, A. Ceré, X. Shi, G. Molina-Terriza, and J. P. Torres, Phys. Rev. Lett. 99, 243601 (2007).
[CrossRef]

Silberhorn, C.

A. Eckstein, A. Christ, P. J. Mosley, and C. Silberhorn, Phys. Rev. Lett. 106, 013603 (2011).
[CrossRef]

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

M. Avenhaus, A. Eckstein, P. J. Mosley, and C. Silberhorn, Opt. Lett. 34, 2873 (2009).
[CrossRef]

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
[CrossRef]

Smith, B. J.

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef]

Söller, C.

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

Torres, J. P.

C. I. Osorio, A. Valencia, and J. P. Torres, New J. Phys. 10, 113012 (2008).
[CrossRef]

A. Valencia, A. Ceré, X. Shi, G. Molina-Terriza, and J. P. Torres, Phys. Rev. Lett. 99, 243601 (2007).
[CrossRef]

M. Hendrych, M. Micuda, and J. P. Torres, Opt. Lett. 32, 2339 (2007).
[CrossRef]

U’Ren, A. B.

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef]

A. B. U’Ren, Y. Jeronimo-Moreno, and H. Garcia-Gracia, Phys. Rev. A 75, 023810 (2007).
[CrossRef]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
[CrossRef]

Valencia, A.

C. I. Osorio, A. Valencia, and J. P. Torres, New J. Phys. 10, 113012 (2008).
[CrossRef]

A. Valencia, A. Ceré, X. Shi, G. Molina-Terriza, and J. P. Torres, Phys. Rev. Lett. 99, 243601 (2007).
[CrossRef]

Walmsley, I. A.

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
[CrossRef]

Wasilewski, W.

P. Kolenderski and W. Wasilewski, Phys. Rev. A 80, 015801 (2009).
[CrossRef]

P. Kolenderski, W. Wasilewski, and K. Banaszek, Phys. Rev. A 80, 013811 (2009).
[CrossRef]

W. Wasilewski, P. Wasylczyk, P. Kolenderski, K. Banaszek, and C. Radzewicz, Opt. Lett. 31, 1130 (2006).
[CrossRef]

Wasylczyk, P.

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef]

W. Wasilewski, P. Wasylczyk, P. Kolenderski, K. Banaszek, and C. Radzewicz, Opt. Lett. 31, 1130 (2006).
[CrossRef]

Wong, F. N.

O. Kuzucu, M. Fiorentino, M. A. Albota, F. N. Wong, and F. X. Kärtner, Phys. Rev. Lett. 94, 083601 (2005).
[CrossRef]

Yan, Z.

Z. Yan, D. Hamel, A. Heinrichs, X. Jiang, M. Itzler, and T. Jennewein, Rev. Sci. Instrum. 83, 073105 (2012).
[CrossRef]

Zang, L. Y.

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

J. Mod. Opt. (1)

Y.-H. Kim and W. P. Grice, J. Mod. Opt. 49, 2309 (2002).
[CrossRef]

Laser Phys. (1)

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, R. Erdmann, W. P. Grice, and M. G. Raymer, Laser Phys. 15, 146 (2005).
[CrossRef]

New J. Phys. (1)

C. I. Osorio, A. Valencia, and J. P. Torres, New J. Phys. 10, 113012 (2008).
[CrossRef]

Opt. Lett. (4)

Phys. Rev. A (7)

A. B. U’Ren, Y. Jeronimo-Moreno, and H. Garcia-Gracia, Phys. Rev. A 75, 023810 (2007).
[CrossRef]

H. S. Poh, C. Y. Lum, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 75, 043816 (2007).
[CrossRef]

H. S. Poh, J. Lim, I. Marcikic, A. Lamas-Linares, and C. Kurtsiefer, Phys. Rev. A 80, 043815 (2009).
[CrossRef]

C. Söller, B. Brecht, P. J. Mosley, L. Y. Zang, A. Podlipensky, N. Y. Joly, P. S. J. Russell, and C. Silberhorn, Phys. Rev. A 81, 031801 (2010).
[CrossRef]

P. Kolenderski, W. Wasilewski, and K. Banaszek, Phys. Rev. A 80, 013811 (2009).
[CrossRef]

A. Dragan, Phys. Rev. A 70, 053814 (2004).
[CrossRef]

P. Kolenderski and W. Wasilewski, Phys. Rev. A 80, 015801 (2009).
[CrossRef]

Phys. Rev. Lett. (4)

A. Eckstein, A. Christ, P. J. Mosley, and C. Silberhorn, Phys. Rev. Lett. 106, 013603 (2011).
[CrossRef]

O. Kuzucu, M. Fiorentino, M. A. Albota, F. N. Wong, and F. X. Kärtner, Phys. Rev. Lett. 94, 083601 (2005).
[CrossRef]

A. Valencia, A. Ceré, X. Shi, G. Molina-Terriza, and J. P. Torres, Phys. Rev. Lett. 99, 243601 (2007).
[CrossRef]

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef]

Rev. Sci. Instrum. (1)

Z. Yan, D. Hamel, A. Heinrichs, X. Jiang, M. Itzler, and T. Jennewein, Rev. Sci. Instrum. 83, 073105 (2012).
[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

Experimental setup. A tunable Ti:sapphire laser is coupled into single-mode fiber using a coupler (CI) with collimated output (CO). A half-wave plate (HWP) allows polarization correction. A lens (L1) focuses the pump, resulting in a beam radius of 150 μm in the BBO crystal. Downconverted photons exit at an angle of 3° and are collected by a system of plano-convex lenses (L2 and L3; focal length 150 mm) and coupling aspheric lenses (C1 and C2; focal length 15.4 mm). The NFAD’s photon detection gates the id201 detector.

Fig. 2.
Fig. 2.

Histograms (the dots are measured data, the Poissonian error bars are omitted due to visibility, and the lines are Gaussian fits to the data) of photon arrival times with 200 s acquisition time and 156 ps bin size. (a) Triggering with either e- or o-polarized photon. Placing the polarizer in front of the triggering coupler allows the selection of (b) e-polarized, and (c) o-polarized photons.

Fig. 3.
Fig. 3.

Measured central wavelengths (black circles) and guiding blue curve of extraordinary and ordinary photons depending on the internal angle between the pump beam and the optical axes. The wavelength error is smaller than the marker size.

Fig. 4.
Fig. 4.

EPMF measurement (colored squares) and theory (continuous contour at 13.5%, dashed contour curve at 50%). The cuts are labeled with pump wavelength λp. The sizes of the squares represent the resolution of the spectrometer. The inset shows the comparison between measured and theoretical central frequencies and EPMF widths. This particular shape of the EPM curve allows for the generation of positively spectrally correlated photons.

Equations (2)

Equations on this page are rendered with MathJax. Learn more.

ψ(ωs,ωi)=Θ(ωs,ωi)A(ωs+ωi).
ψ(ωs,ωpωs)Θ(ωs,ωpωs).

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