Abstract

Experimental results on the squeezing of photon-number fluctuations of series-coupled LED's driven by a constant-voltage source are presented that illustrate the advantage of series-coupled LED's, namely, a greater squeezing capability than that of a single LED driven through an equivalent series resistor. We discuss the microscopic origin of the deep squeezing on the basis of quantum-mechanical Langevin equations.

© 1999 Optical Society of America

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  1. W. H. Richardson, S. Machida, and Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
    [CrossRef] [PubMed]
  2. P. R. Tapster, J. G. Rarity, and J. S. Satchell, Europhys. Lett. 4, 293 (1987).
    [CrossRef]
  3. T. Hirano and T. Kuga, IEEE J. Quantum Electron. 31, 2236 (1995).
    [CrossRef]
  4. G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, Jpn. J. Appl. Phys. Part 1 36, 6350 (1997).
    [CrossRef]
  5. J. Abe, G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, J. Opt. Soc. Am. B 14, 1295 (1997).
    [CrossRef]
  6. M. Kobayashi, M. Kohno, Y. Kadoya, M. Yamanishi, J. Abe, and T. Hirano, Appl. Phys. Lett. 72, 284 (1997).
    [CrossRef]
  7. G. Björk, Phys. Rev. A 45, 8259 (1992).
    [CrossRef]
  8. P. J. Edwards and G. H. Pollard, Phys. Rev. Lett. 69, 1757 (1992).
    [CrossRef] [PubMed]
  9. E. Goobar, A. Karlsson, G. Björk, and P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
    [CrossRef] [PubMed]
  10. K. Kurata, Y. Ono, K. Ito, M. Mori, and H. Sano, IEEE Trans. Electron Devices ED-28, 374 (1981).
    [CrossRef]
  11. H. Fujisaki and A. Shimizu, J. Phys. Soc. Jpn. 66, 34 (1997).
    [CrossRef]
  12. H. Fujisaki and A. Shimizu, Phys. Rev. A 57, 3074 (1998).
    [CrossRef]
  13. A. Imamoglu and Y. Yamamoto, Phys. Rev. Lett. 70, 3327 (1993).
    [CrossRef] [PubMed]

1998 (1)

H. Fujisaki and A. Shimizu, Phys. Rev. A 57, 3074 (1998).
[CrossRef]

1997 (4)

M. Kobayashi, M. Kohno, Y. Kadoya, M. Yamanishi, J. Abe, and T. Hirano, Appl. Phys. Lett. 72, 284 (1997).
[CrossRef]

H. Fujisaki and A. Shimizu, J. Phys. Soc. Jpn. 66, 34 (1997).
[CrossRef]

G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, Jpn. J. Appl. Phys. Part 1 36, 6350 (1997).
[CrossRef]

J. Abe, G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, J. Opt. Soc. Am. B 14, 1295 (1997).
[CrossRef]

1995 (1)

T. Hirano and T. Kuga, IEEE J. Quantum Electron. 31, 2236 (1995).
[CrossRef]

1993 (2)

E. Goobar, A. Karlsson, G. Björk, and P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[CrossRef] [PubMed]

A. Imamoglu and Y. Yamamoto, Phys. Rev. Lett. 70, 3327 (1993).
[CrossRef] [PubMed]

1992 (2)

G. Björk, Phys. Rev. A 45, 8259 (1992).
[CrossRef]

P. J. Edwards and G. H. Pollard, Phys. Rev. Lett. 69, 1757 (1992).
[CrossRef] [PubMed]

1991 (1)

W. H. Richardson, S. Machida, and Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[CrossRef] [PubMed]

1987 (1)

P. R. Tapster, J. G. Rarity, and J. S. Satchell, Europhys. Lett. 4, 293 (1987).
[CrossRef]

1981 (1)

K. Kurata, Y. Ono, K. Ito, M. Mori, and H. Sano, IEEE Trans. Electron Devices ED-28, 374 (1981).
[CrossRef]

Abe, J.

M. Kobayashi, M. Kohno, Y. Kadoya, M. Yamanishi, J. Abe, and T. Hirano, Appl. Phys. Lett. 72, 284 (1997).
[CrossRef]

J. Abe, G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, J. Opt. Soc. Am. B 14, 1295 (1997).
[CrossRef]

Björk, G.

E. Goobar, A. Karlsson, G. Björk, and P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[CrossRef] [PubMed]

G. Björk, Phys. Rev. A 45, 8259 (1992).
[CrossRef]

Edwards, P. J.

P. J. Edwards and G. H. Pollard, Phys. Rev. Lett. 69, 1757 (1992).
[CrossRef] [PubMed]

Fujisaki, H.

H. Fujisaki and A. Shimizu, Phys. Rev. A 57, 3074 (1998).
[CrossRef]

H. Fujisaki and A. Shimizu, J. Phys. Soc. Jpn. 66, 34 (1997).
[CrossRef]

Goobar, E.

E. Goobar, A. Karlsson, G. Björk, and P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[CrossRef] [PubMed]

Hirano, T.

M. Kobayashi, M. Kohno, Y. Kadoya, M. Yamanishi, J. Abe, and T. Hirano, Appl. Phys. Lett. 72, 284 (1997).
[CrossRef]

J. Abe, G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, J. Opt. Soc. Am. B 14, 1295 (1997).
[CrossRef]

G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, Jpn. J. Appl. Phys. Part 1 36, 6350 (1997).
[CrossRef]

T. Hirano and T. Kuga, IEEE J. Quantum Electron. 31, 2236 (1995).
[CrossRef]

Imamoglu, A.

A. Imamoglu and Y. Yamamoto, Phys. Rev. Lett. 70, 3327 (1993).
[CrossRef] [PubMed]

Ito, K.

K. Kurata, Y. Ono, K. Ito, M. Mori, and H. Sano, IEEE Trans. Electron Devices ED-28, 374 (1981).
[CrossRef]

Kadoya, Y.

M. Kobayashi, M. Kohno, Y. Kadoya, M. Yamanishi, J. Abe, and T. Hirano, Appl. Phys. Lett. 72, 284 (1997).
[CrossRef]

Karlsson, A.

E. Goobar, A. Karlsson, G. Björk, and P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[CrossRef] [PubMed]

Kobayashi, M.

M. Kobayashi, M. Kohno, Y. Kadoya, M. Yamanishi, J. Abe, and T. Hirano, Appl. Phys. Lett. 72, 284 (1997).
[CrossRef]

Kohno, M.

M. Kobayashi, M. Kohno, Y. Kadoya, M. Yamanishi, J. Abe, and T. Hirano, Appl. Phys. Lett. 72, 284 (1997).
[CrossRef]

Kuga, T.

J. Abe, G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, J. Opt. Soc. Am. B 14, 1295 (1997).
[CrossRef]

G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, Jpn. J. Appl. Phys. Part 1 36, 6350 (1997).
[CrossRef]

T. Hirano and T. Kuga, IEEE J. Quantum Electron. 31, 2236 (1995).
[CrossRef]

Kurata, K.

K. Kurata, Y. Ono, K. Ito, M. Mori, and H. Sano, IEEE Trans. Electron Devices ED-28, 374 (1981).
[CrossRef]

Machida, S.

W. H. Richardson, S. Machida, and Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[CrossRef] [PubMed]

Mori, M.

K. Kurata, Y. Ono, K. Ito, M. Mori, and H. Sano, IEEE Trans. Electron Devices ED-28, 374 (1981).
[CrossRef]

Ono, Y.

K. Kurata, Y. Ono, K. Ito, M. Mori, and H. Sano, IEEE Trans. Electron Devices ED-28, 374 (1981).
[CrossRef]

Pollard, G. H.

P. J. Edwards and G. H. Pollard, Phys. Rev. Lett. 69, 1757 (1992).
[CrossRef] [PubMed]

Rarity, J. G.

P. R. Tapster, J. G. Rarity, and J. S. Satchell, Europhys. Lett. 4, 293 (1987).
[CrossRef]

Richardson, W. H.

W. H. Richardson, S. Machida, and Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[CrossRef] [PubMed]

Rigole, P.-J.

E. Goobar, A. Karlsson, G. Björk, and P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[CrossRef] [PubMed]

Sano, H.

K. Kurata, Y. Ono, K. Ito, M. Mori, and H. Sano, IEEE Trans. Electron Devices ED-28, 374 (1981).
[CrossRef]

Satchell, J. S.

P. R. Tapster, J. G. Rarity, and J. S. Satchell, Europhys. Lett. 4, 293 (1987).
[CrossRef]

Shimizu, A.

H. Fujisaki and A. Shimizu, Phys. Rev. A 57, 3074 (1998).
[CrossRef]

H. Fujisaki and A. Shimizu, J. Phys. Soc. Jpn. 66, 34 (1997).
[CrossRef]

Shinozaki, G.

G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, Jpn. J. Appl. Phys. Part 1 36, 6350 (1997).
[CrossRef]

J. Abe, G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, J. Opt. Soc. Am. B 14, 1295 (1997).
[CrossRef]

Tapster, P. R.

P. R. Tapster, J. G. Rarity, and J. S. Satchell, Europhys. Lett. 4, 293 (1987).
[CrossRef]

Yamamoto, Y.

A. Imamoglu and Y. Yamamoto, Phys. Rev. Lett. 70, 3327 (1993).
[CrossRef] [PubMed]

W. H. Richardson, S. Machida, and Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[CrossRef] [PubMed]

Yamanishi, M.

J. Abe, G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, J. Opt. Soc. Am. B 14, 1295 (1997).
[CrossRef]

M. Kobayashi, M. Kohno, Y. Kadoya, M. Yamanishi, J. Abe, and T. Hirano, Appl. Phys. Lett. 72, 284 (1997).
[CrossRef]

G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, Jpn. J. Appl. Phys. Part 1 36, 6350 (1997).
[CrossRef]

Appl. Phys. Lett. (1)

M. Kobayashi, M. Kohno, Y. Kadoya, M. Yamanishi, J. Abe, and T. Hirano, Appl. Phys. Lett. 72, 284 (1997).
[CrossRef]

Europhys. Lett. (1)

P. R. Tapster, J. G. Rarity, and J. S. Satchell, Europhys. Lett. 4, 293 (1987).
[CrossRef]

IEEE J. Quantum Electron. (1)

T. Hirano and T. Kuga, IEEE J. Quantum Electron. 31, 2236 (1995).
[CrossRef]

IEEE Trans. Electron Devices (1)

K. Kurata, Y. Ono, K. Ito, M. Mori, and H. Sano, IEEE Trans. Electron Devices ED-28, 374 (1981).
[CrossRef]

J. Opt. Soc. Am. B (1)

J. Phys. Soc. Jpn. (1)

H. Fujisaki and A. Shimizu, J. Phys. Soc. Jpn. 66, 34 (1997).
[CrossRef]

Jpn. J. Appl. Phys. Part 1 (1)

G. Shinozaki, T. Hirano, T. Kuga, and M. Yamanishi, Jpn. J. Appl. Phys. Part 1 36, 6350 (1997).
[CrossRef]

Phys. Rev. A (2)

H. Fujisaki and A. Shimizu, Phys. Rev. A 57, 3074 (1998).
[CrossRef]

G. Björk, Phys. Rev. A 45, 8259 (1992).
[CrossRef]

Phys. Rev. Lett. (4)

P. J. Edwards and G. H. Pollard, Phys. Rev. Lett. 69, 1757 (1992).
[CrossRef] [PubMed]

E. Goobar, A. Karlsson, G. Björk, and P.-J. Rigole, Phys. Rev. Lett. 70, 437 (1993).
[CrossRef] [PubMed]

A. Imamoglu and Y. Yamamoto, Phys. Rev. Lett. 70, 3327 (1993).
[CrossRef] [PubMed]

W. H. Richardson, S. Machida, and Y. Yamamoto, Phys. Rev. Lett. 66, 2867 (1991).
[CrossRef] [PubMed]

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Figures (2)

Fig. 1
Fig. 1

(a) Experimental arrangement for noise measurements of series-coupled LED's. LED's are connected to a constant-voltage source. The output noise signal from one of them detected by a PD is amplified by an ultralow-noise preamplifier and is finally fed to a spectrum analyzer. To calibrate the shot-noise level we coupled another LED weakly to the PD. (b) Normalized noise power spectra of the output photon number obtained for N=5 with a pump current of 3.85 mA (19 A/cm2). The abrupt drop in the Fano factor observed in the near-dc <2MHz regime is an artifact of the measurement.

Fig. 2
Fig. 2

Fano factor of the overall output photon number F0 of the two cases discussed here. Experimental values F0 of the series-coupled LED (filled triangles) and of the single LED driven through series resistance Rs are plotted as functions of the number of LED's and the series resistance, respectively. Two theoretical curves for F0 are also drawn for both cases (see text). The F0 of photon flux from all LED's for the twin-diode case is indicated by the filled square.

Equations (2)

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F0=1/N2+N-1/N2=1/N
F0=1/N2+2[N-1/N2].

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