T. B. Pittman, D. V. Strekalov, A. Migdall, M. H. Rubin, A. V. Sergienko, and Y. H. Shih, “Can two-photon interference be considered the interference of two-photon?” Phys. Rev. Lett. 77, 1917–1920 (1996).

[CrossRef]
[PubMed]

K. Koch, E. C. Cheung, G. T. Moore, S. H. Chakmakjian, and J. M. Liu, “Hot spots in parametric fluorescence with pump beam of finite cross section,” IEEE J. Quantum Electron. 31, 769–781 (1995).

[CrossRef]

R. Y. Chiao, P. G. Kwait, and A. Steinberg, “Quantum nonlocality in two-photon experiments at Berkeley,” Quantum Semiclassic. Opt. 7, 259–278 (1995).

[CrossRef]

T. E. Kiess, Y. H. Shih, A. V. Sergienko, and C. O. Alley, “Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by type-II parametric downconversion,” Phys. Rev. Lett. 71, 3893–3897 (1993).

[CrossRef]
[PubMed]

Z. Y. Ou and L. Mandel, “Violation of Bell’s inequality and classical probability in a two-photon correlation experiment,” Phys. Rev. Lett. 61, 50–53 (1988).

[CrossRef]
[PubMed]

Y. H. Shih and C. O. Alley, “New type of Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by optical parametric downconversion,” Phys. Rev. Lett. 61, 2921–2924 (1988).

[CrossRef]
[PubMed]

D. N. Klyshko, “Utilization of vacuum fluctuations as an optical brightness standard,” Sov. J. Quantum Electron. 7, 591–595 (1977).

[CrossRef]

M. Choy and R. L. Byer, “Accurate second-order susceptibility measurements of visible and infrared nonlinear crystals,” Phys. Rev. B 14, 1693–1706 (1976).

[CrossRef]

A. Einstein, B. Podolsky, and N. Rosen, “Can quantum-mechanical description of physical reality be considered complete?” Phys. Rev. 47, 777–780 (1935).

[CrossRef]

T. E. Kiess, Y. H. Shih, A. V. Sergienko, and C. O. Alley, “Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by type-II parametric downconversion,” Phys. Rev. Lett. 71, 3893–3897 (1993).

[CrossRef]
[PubMed]

Y. H. Shih and C. O. Alley, “New type of Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by optical parametric downconversion,” Phys. Rev. Lett. 61, 2921–2924 (1988).

[CrossRef]
[PubMed]

M. Choy and R. L. Byer, “Accurate second-order susceptibility measurements of visible and infrared nonlinear crystals,” Phys. Rev. B 14, 1693–1706 (1976).

[CrossRef]

K. Koch, E. C. Cheung, G. T. Moore, S. H. Chakmakjian, and J. M. Liu, “Hot spots in parametric fluorescence with pump beam of finite cross section,” IEEE J. Quantum Electron. 31, 769–781 (1995).

[CrossRef]

K. Koch, E. C. Cheung, G. T. Moore, S. H. Chakmakjian, and J. M. Liu, “Hot spots in parametric fluorescence with pump beam of finite cross section,” IEEE J. Quantum Electron. 31, 769–781 (1995).

[CrossRef]

R. Y. Chiao, P. G. Kwait, and A. Steinberg, “Quantum nonlocality in two-photon experiments at Berkeley,” Quantum Semiclassic. Opt. 7, 259–278 (1995).

[CrossRef]

M. Choy and R. L. Byer, “Accurate second-order susceptibility measurements of visible and infrared nonlinear crystals,” Phys. Rev. B 14, 1693–1706 (1976).

[CrossRef]

A. Einstein, B. Podolsky, and N. Rosen, “Can quantum-mechanical description of physical reality be considered complete?” Phys. Rev. 47, 777–780 (1935).

[CrossRef]

T. E. Kiess, Y. H. Shih, A. V. Sergienko, and C. O. Alley, “Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by type-II parametric downconversion,” Phys. Rev. Lett. 71, 3893–3897 (1993).

[CrossRef]
[PubMed]

D. N. Klyshko, “Utilization of vacuum fluctuations as an optical brightness standard,” Sov. J. Quantum Electron. 7, 591–595 (1977).

[CrossRef]

K. Koch, E. C. Cheung, G. T. Moore, S. H. Chakmakjian, and J. M. Liu, “Hot spots in parametric fluorescence with pump beam of finite cross section,” IEEE J. Quantum Electron. 31, 769–781 (1995).

[CrossRef]

R. Y. Chiao, P. G. Kwait, and A. Steinberg, “Quantum nonlocality in two-photon experiments at Berkeley,” Quantum Semiclassic. Opt. 7, 259–278 (1995).

[CrossRef]

K. Koch, E. C. Cheung, G. T. Moore, S. H. Chakmakjian, and J. M. Liu, “Hot spots in parametric fluorescence with pump beam of finite cross section,” IEEE J. Quantum Electron. 31, 769–781 (1995).

[CrossRef]

Z. Y. Ou and L. Mandel, “Violation of Bell’s inequality and classical probability in a two-photon correlation experiment,” Phys. Rev. Lett. 61, 50–53 (1988).

[CrossRef]
[PubMed]

T. B. Pittman, D. V. Strekalov, A. Migdall, M. H. Rubin, A. V. Sergienko, and Y. H. Shih, “Can two-photon interference be considered the interference of two-photon?” Phys. Rev. Lett. 77, 1917–1920 (1996).

[CrossRef]
[PubMed]

K. Koch, E. C. Cheung, G. T. Moore, S. H. Chakmakjian, and J. M. Liu, “Hot spots in parametric fluorescence with pump beam of finite cross section,” IEEE J. Quantum Electron. 31, 769–781 (1995).

[CrossRef]

Z. Y. Ou and L. Mandel, “Violation of Bell’s inequality and classical probability in a two-photon correlation experiment,” Phys. Rev. Lett. 61, 50–53 (1988).

[CrossRef]
[PubMed]

T. B. Pittman, D. V. Strekalov, A. Migdall, M. H. Rubin, A. V. Sergienko, and Y. H. Shih, “Can two-photon interference be considered the interference of two-photon?” Phys. Rev. Lett. 77, 1917–1920 (1996).

[CrossRef]
[PubMed]

A. Einstein, B. Podolsky, and N. Rosen, “Can quantum-mechanical description of physical reality be considered complete?” Phys. Rev. 47, 777–780 (1935).

[CrossRef]

A. Einstein, B. Podolsky, and N. Rosen, “Can quantum-mechanical description of physical reality be considered complete?” Phys. Rev. 47, 777–780 (1935).

[CrossRef]

T. B. Pittman, D. V. Strekalov, A. Migdall, M. H. Rubin, A. V. Sergienko, and Y. H. Shih, “Can two-photon interference be considered the interference of two-photon?” Phys. Rev. Lett. 77, 1917–1920 (1996).

[CrossRef]
[PubMed]

T. B. Pittman, D. V. Strekalov, A. Migdall, M. H. Rubin, A. V. Sergienko, and Y. H. Shih, “Can two-photon interference be considered the interference of two-photon?” Phys. Rev. Lett. 77, 1917–1920 (1996).

[CrossRef]
[PubMed]

T. E. Kiess, Y. H. Shih, A. V. Sergienko, and C. O. Alley, “Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by type-II parametric downconversion,” Phys. Rev. Lett. 71, 3893–3897 (1993).

[CrossRef]
[PubMed]

T. B. Pittman, D. V. Strekalov, A. Migdall, M. H. Rubin, A. V. Sergienko, and Y. H. Shih, “Can two-photon interference be considered the interference of two-photon?” Phys. Rev. Lett. 77, 1917–1920 (1996).

[CrossRef]
[PubMed]

T. E. Kiess, Y. H. Shih, A. V. Sergienko, and C. O. Alley, “Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by type-II parametric downconversion,” Phys. Rev. Lett. 71, 3893–3897 (1993).

[CrossRef]
[PubMed]

Y. H. Shih and C. O. Alley, “New type of Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by optical parametric downconversion,” Phys. Rev. Lett. 61, 2921–2924 (1988).

[CrossRef]
[PubMed]

R. Y. Chiao, P. G. Kwait, and A. Steinberg, “Quantum nonlocality in two-photon experiments at Berkeley,” Quantum Semiclassic. Opt. 7, 259–278 (1995).

[CrossRef]

T. B. Pittman, D. V. Strekalov, A. Migdall, M. H. Rubin, A. V. Sergienko, and Y. H. Shih, “Can two-photon interference be considered the interference of two-photon?” Phys. Rev. Lett. 77, 1917–1920 (1996).

[CrossRef]
[PubMed]

K. Koch, E. C. Cheung, G. T. Moore, S. H. Chakmakjian, and J. M. Liu, “Hot spots in parametric fluorescence with pump beam of finite cross section,” IEEE J. Quantum Electron. 31, 769–781 (1995).

[CrossRef]

A. Einstein, B. Podolsky, and N. Rosen, “Can quantum-mechanical description of physical reality be considered complete?” Phys. Rev. 47, 777–780 (1935).

[CrossRef]

M. Choy and R. L. Byer, “Accurate second-order susceptibility measurements of visible and infrared nonlinear crystals,” Phys. Rev. B 14, 1693–1706 (1976).

[CrossRef]

Z. Y. Ou and L. Mandel, “Violation of Bell’s inequality and classical probability in a two-photon correlation experiment,” Phys. Rev. Lett. 61, 50–53 (1988).

[CrossRef]
[PubMed]

Y. H. Shih and C. O. Alley, “New type of Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by optical parametric downconversion,” Phys. Rev. Lett. 61, 2921–2924 (1988).

[CrossRef]
[PubMed]

T. E. Kiess, Y. H. Shih, A. V. Sergienko, and C. O. Alley, “Einstein–Podolsky–Rosen–Bohm experiment using pairs of light quanta produced by type-II parametric downconversion,” Phys. Rev. Lett. 71, 3893–3897 (1993).

[CrossRef]
[PubMed]

T. B. Pittman, D. V. Strekalov, A. Migdall, M. H. Rubin, A. V. Sergienko, and Y. H. Shih, “Can two-photon interference be considered the interference of two-photon?” Phys. Rev. Lett. 77, 1917–1920 (1996).

[CrossRef]
[PubMed]

R. Y. Chiao, P. G. Kwait, and A. Steinberg, “Quantum nonlocality in two-photon experiments at Berkeley,” Quantum Semiclassic. Opt. 7, 259–278 (1995).

[CrossRef]

D. N. Klyshko, “Utilization of vacuum fluctuations as an optical brightness standard,” Sov. J. Quantum Electron. 7, 591–595 (1977).

[CrossRef]

F. Zernike and J. E. Midwinter, Applied Nonlinear Optics (Wiley, New York, 1973), pp. 34–41.

Although this Kleinman symmetry assumption is best met for wavelengths shorter than 5 μm, where LiIO_{3} transmittance begins to fall off, the calculations here are carried out to 9 μm for better viewing of the results.

A. Yariv, Optical Electronics, 3rd ed. (Holt, Rinehart, & Winston, New York, 1985), Chap. 8, pp. 227–273.

D. N. Klyshko, Photons and Nonlinear Optics (Gordon & Breach, New York, 1988), Chap. 1, pp. 1–64; Chap. 6, pp. 285–357.

M. Born and E. Wolf, Principles of Optics, 6th ed. (Pergamon, New York, 1993), pp. 679–680.