Abstract

We report measurements of two-photon interference using a cw-pumped type-II spontaneous parametric down-conversion source based on a multimode perodically poled potassium titanyl phosphate (PPKTP) waveguide. We have used the recently demonstrated technique of controlling the spatial characteristics of the down-conversion process via intermodal dispersion to generate photon pairs in fundamental transverse modes, thus ensuring their spatial indistinguishability. Good overlap of photon modes within the pairs has been verified using the Hong-Ou-Mandel interferometer and the preparation of polarization entanglement in the Shih-Alley configuration, yielding visibilities consistently above 90%.

© 2014 Optical Society of America

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2013 (5)

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

R. Machulka, J. Svozilík, J. Soubusta, J. Peřina, O. Haderka, “Spatial and spectral properties of fields generated by pulsed second-harmonic generation in a periodically poled potassium-titanyl-phosphate waveguide,” Phys. Rev. A 87, 013836 (2013).
[CrossRef]

M. D. C. Pereira, F. E. Becerra, B. L. Glebov, J. Fan, S. W. Nam, A. Migdall, “Demonstrating highly symmetric single-mode, single-photon heralding efficiency in spontaneous parametric downconversion,” Opt. Lett. 38, 1609–1611 (2013).
[CrossRef]

G. Harder, V. Ansari, B. Brecht, T. Dirmeier, C. Marquardt, C. Silberhorn, “An optimized photon pair source for quantum circuits,” Opt. Express 21, 13975–13985 (2013).
[CrossRef] [PubMed]

H. Herrmann, X. Yang, A. Thomas, A. Poppe, W. Sohler, C. Silberhorn, “Post-selection free, integrated optical source of non-degenerate, polarization entangled photon pairs,” Opt. Express 21, 27981–27991 (2013).
[CrossRef]

2012 (3)

2011 (2)

B. Brecht, A. Eckstein, A. Christ, H. Suche, C. Silberhorn, “From quantum pulse gate to quantum pulse shaper–engineered frequency conversion in nonlinear optical waveguides,” New. J. Phys. 13, 065029 (2011).
[CrossRef]

J. P. Torres, K. Banaszek, I. A. Walmsley, “Engineering nonlinear optic sources of photonic entanglement,” Progress in Optics 56, 227–331 (2011).
[CrossRef]

2010 (1)

2009 (5)

M. Karpiński, C. Radzewicz, K. Banaszek, “Experimental characterization of three-wave mixing in a multi-mode nonlinear KTiOPO4 waveguide,” Appl. Phys. Lett. 94, 181105 (2009).
[CrossRef]

P. J. Mosley, A. Christ, A. Eckstein, C. Silberhorn, “Direct measurement of the spatial-spectral structure of waveguided parametric down-conversion,” Phys. Rev. Lett. 103, 233901 (2009).
[CrossRef]

A. Martin, V. Cristofori, P. Aboussouan, H. Herrmann, W. Sohler, D. B. Ostrowsky, O. Alibart, S. Tanzilli, “Integrated optical source of polarization entangled photons at 1310 nm,” Opt. Express 17, 1033–1041 (2009).
[CrossRef] [PubMed]

T. Zhong, F. N. C. Wong, T. D. Roberts, P. Battle, “High performance photon-pair-source based on fiber-coupled periodically poled KTiOPO4 waveguide,” Opt. Express 17, 12019–12030 (2009).
[CrossRef] [PubMed]

J. L. O’Brien, A. Furusawa, J. Vučković, “Photonic quantum technologies,” Nat. Photon. 3, 687–695 (2009).
[CrossRef]

2007 (1)

2004 (1)

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, “Efficient conditional preparation of high-fidelity single photon states for fiber-optic quantum networks,” Phys. Rev. Lett. 93, 093601 (2004).
[CrossRef]

2001 (1)

1998 (1)

W. P. Grice, R. Erdmann, I. A. Walmsley, D. Branning, “Spectral distinguishability in ultrafast parametric down-conversion,” Phys. Rev. A 57, R2289–R2292 (1998).
[CrossRef]

1996 (1)

M. H. Rubin, “Transverse correlation in optical spontaneous parametric down-conversion,” Phys. Rev. A 54, 5349–5360 (1996).
[CrossRef] [PubMed]

1993 (1)

M. Żukowski, A. Zeilinger, M. A. Horne, A. K. Ekert, “‘Event-ready-detectors’ Bell experiment via entanglement swapping,” Phys. Rev. Lett. 71, 4287–4290 (1993).
[CrossRef]

1988 (1)

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

1987 (1)

C. K. Hong, Z. Y. Ou, L. Mandel, “Measurement of subpicosecond time intervals between two photons by interference,” Phys. Rev. Lett. 59, 2044–2046 (1987).
[CrossRef] [PubMed]

Aboussouan, P.

Alibart, O.

Alley, C. O.

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

Altepeter, J. B.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Ansari, V.

Banaszek, K.

M. Karpiński, C. Radzewicz, K. Banaszek, “Dispersion-based control of modal characteristics for parametric down-conversion in a multimode waveguide,” Opt. Lett. 37, 878–880 (2012).
[CrossRef]

M. Karpiński, C. Radzewicz, K. Banaszek, “Generation of spatially pure photon pairs in a multimode nonlinear waveguide using intermodal dispersion,” Proc. SPIE 8518, Quantum Communications and Quantum Imaging X, 85180J (2012).
[CrossRef]

J. P. Torres, K. Banaszek, I. A. Walmsley, “Engineering nonlinear optic sources of photonic entanglement,” Progress in Optics 56, 227–331 (2011).
[CrossRef]

M. Karpiński, C. Radzewicz, K. Banaszek, “Experimental characterization of three-wave mixing in a multi-mode nonlinear KTiOPO4 waveguide,” Appl. Phys. Lett. 94, 181105 (2009).
[CrossRef]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, “Efficient conditional preparation of high-fidelity single photon states for fiber-optic quantum networks,” Phys. Rev. Lett. 93, 093601 (2004).
[CrossRef]

K. Banaszek, A. B. U’Ren, I. A. Walmsley, “Generation of correlated photons in controlled spatial modes by downconversion in nonlinear waveguides,” Opt. Lett. 26, 1367–1369 (2001).
[CrossRef]

Battle, P.

Beausoleil, R. G.

Becerra, F. E.

Berggen, K. K.

Branning, D.

W. P. Grice, R. Erdmann, I. A. Walmsley, D. Branning, “Spectral distinguishability in ultrafast parametric down-conversion,” Phys. Rev. A 57, R2289–R2292 (1998).
[CrossRef]

Brecht, B.

G. Harder, V. Ansari, B. Brecht, T. Dirmeier, C. Marquardt, C. Silberhorn, “An optimized photon pair source for quantum circuits,” Opt. Express 21, 13975–13985 (2013).
[CrossRef] [PubMed]

B. Brecht, A. Eckstein, A. Christ, H. Suche, C. Silberhorn, “From quantum pulse gate to quantum pulse shaper–engineered frequency conversion in nonlinear optical waveguides,” New. J. Phys. 13, 065029 (2011).
[CrossRef]

Brunner, N.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Calkins, B.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Christ, A.

B. Brecht, A. Eckstein, A. Christ, H. Suche, C. Silberhorn, “From quantum pulse gate to quantum pulse shaper–engineered frequency conversion in nonlinear optical waveguides,” New. J. Phys. 13, 065029 (2011).
[CrossRef]

P. J. Mosley, A. Christ, A. Eckstein, C. Silberhorn, “Direct measurement of the spatial-spectral structure of waveguided parametric down-conversion,” Phys. Rev. Lett. 103, 233901 (2009).
[CrossRef]

Christensen, B. G.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Cristofori, V.

Dirmeier, T.

Eckstein, A.

B. Brecht, A. Eckstein, A. Christ, H. Suche, C. Silberhorn, “From quantum pulse gate to quantum pulse shaper–engineered frequency conversion in nonlinear optical waveguides,” New. J. Phys. 13, 065029 (2011).
[CrossRef]

P. J. Mosley, A. Christ, A. Eckstein, C. Silberhorn, “Direct measurement of the spatial-spectral structure of waveguided parametric down-conversion,” Phys. Rev. Lett. 103, 233901 (2009).
[CrossRef]

Ekert, A. K.

M. Żukowski, A. Zeilinger, M. A. Horne, A. K. Ekert, “‘Event-ready-detectors’ Bell experiment via entanglement swapping,” Phys. Rev. Lett. 71, 4287–4290 (1993).
[CrossRef]

Erdmann, R.

W. P. Grice, R. Erdmann, I. A. Walmsley, D. Branning, “Spectral distinguishability in ultrafast parametric down-conversion,” Phys. Rev. A 57, R2289–R2292 (1998).
[CrossRef]

Fan, J.

Fiorentino, M.

Furusawa, A.

J. L. O’Brien, A. Furusawa, J. Vučković, “Photonic quantum technologies,” Nat. Photon. 3, 687–695 (2009).
[CrossRef]

Gerrits, T.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Gisin, N.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Glebov, B. L.

Grice, W. P.

W. P. Grice, R. Erdmann, I. A. Walmsley, D. Branning, “Spectral distinguishability in ultrafast parametric down-conversion,” Phys. Rev. A 57, R2289–R2292 (1998).
[CrossRef]

Haderka, O.

R. Machulka, J. Svozilík, J. Soubusta, J. Peřina, O. Haderka, “Spatial and spectral properties of fields generated by pulsed second-harmonic generation in a periodically poled potassium-titanyl-phosphate waveguide,” Phys. Rev. A 87, 013836 (2013).
[CrossRef]

Harder, G.

Herrmann, H.

Hong, C. K.

C. K. Hong, Z. Y. Ou, L. Mandel, “Measurement of subpicosecond time intervals between two photons by interference,” Phys. Rev. Lett. 59, 2044–2046 (1987).
[CrossRef] [PubMed]

Horne, M. A.

M. Żukowski, A. Zeilinger, M. A. Horne, A. K. Ekert, “‘Event-ready-detectors’ Bell experiment via entanglement swapping,” Phys. Rev. Lett. 71, 4287–4290 (1993).
[CrossRef]

Hu, X.

Jennewein, T.

Jofre, M.

Karpinski, M.

M. Karpiński, C. Radzewicz, K. Banaszek, “Generation of spatially pure photon pairs in a multimode nonlinear waveguide using intermodal dispersion,” Proc. SPIE 8518, Quantum Communications and Quantum Imaging X, 85180J (2012).
[CrossRef]

M. Karpiński, C. Radzewicz, K. Banaszek, “Dispersion-based control of modal characteristics for parametric down-conversion in a multimode waveguide,” Opt. Lett. 37, 878–880 (2012).
[CrossRef]

M. Karpiński, C. Radzewicz, K. Banaszek, “Experimental characterization of three-wave mixing in a multi-mode nonlinear KTiOPO4 waveguide,” Appl. Phys. Lett. 94, 181105 (2009).
[CrossRef]

Kwiat, P. G.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Lim, C. C. W.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Lita, A. E.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Machulka, R.

R. Machulka, J. Svozilík, J. Soubusta, J. Peřina, O. Haderka, “Spatial and spectral properties of fields generated by pulsed second-harmonic generation in a periodically poled potassium-titanyl-phosphate waveguide,” Phys. Rev. A 87, 013836 (2013).
[CrossRef]

Mandel, L.

C. K. Hong, Z. Y. Ou, L. Mandel, “Measurement of subpicosecond time intervals between two photons by interference,” Phys. Rev. Lett. 59, 2044–2046 (1987).
[CrossRef] [PubMed]

Marquardt, C.

Martin, A.

McCusker, K. T.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Migdall, A.

Miller, A.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Mitchell, M. W.

Mosley, P. J.

P. J. Mosley, A. Christ, A. Eckstein, C. Silberhorn, “Direct measurement of the spatial-spectral structure of waveguided parametric down-conversion,” Phys. Rev. Lett. 103, 233901 (2009).
[CrossRef]

Munro, M. W.

Nam, S. W.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

M. D. C. Pereira, F. E. Becerra, B. L. Glebov, J. Fan, S. W. Nam, A. Migdall, “Demonstrating highly symmetric single-mode, single-photon heralding efficiency in spontaneous parametric downconversion,” Opt. Lett. 38, 1609–1611 (2013).
[CrossRef]

O’Brien, J. L.

J. L. O’Brien, A. Furusawa, J. Vučković, “Photonic quantum technologies,” Nat. Photon. 3, 687–695 (2009).
[CrossRef]

Ostrowsky, D. B.

Ou, Z. Y.

C. K. Hong, Z. Y. Ou, L. Mandel, “Measurement of subpicosecond time intervals between two photons by interference,” Phys. Rev. Lett. 59, 2044–2046 (1987).
[CrossRef] [PubMed]

Pereira, M. D. C.

Perez, D.

Perina, J.

R. Machulka, J. Svozilík, J. Soubusta, J. Peřina, O. Haderka, “Spatial and spectral properties of fields generated by pulsed second-harmonic generation in a periodically poled potassium-titanyl-phosphate waveguide,” Phys. Rev. A 87, 013836 (2013).
[CrossRef]

Poppe, A.

Pruneri, V.

Radzewicz, C.

M. Karpiński, C. Radzewicz, K. Banaszek, “Generation of spatially pure photon pairs in a multimode nonlinear waveguide using intermodal dispersion,” Proc. SPIE 8518, Quantum Communications and Quantum Imaging X, 85180J (2012).
[CrossRef]

M. Karpiński, C. Radzewicz, K. Banaszek, “Dispersion-based control of modal characteristics for parametric down-conversion in a multimode waveguide,” Opt. Lett. 37, 878–880 (2012).
[CrossRef]

M. Karpiński, C. Radzewicz, K. Banaszek, “Experimental characterization of three-wave mixing in a multi-mode nonlinear KTiOPO4 waveguide,” Appl. Phys. Lett. 94, 181105 (2009).
[CrossRef]

Rarity, J.

Roberts, T. D.

Rubin, M. H.

M. H. Rubin, “Transverse correlation in optical spontaneous parametric down-conversion,” Phys. Rev. A 54, 5349–5360 (1996).
[CrossRef] [PubMed]

Shalm, L. K.

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

Shih, Y. H.

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

Silberhorn, C.

H. Herrmann, X. Yang, A. Thomas, A. Poppe, W. Sohler, C. Silberhorn, “Post-selection free, integrated optical source of non-degenerate, polarization entangled photon pairs,” Opt. Express 21, 27981–27991 (2013).
[CrossRef]

G. Harder, V. Ansari, B. Brecht, T. Dirmeier, C. Marquardt, C. Silberhorn, “An optimized photon pair source for quantum circuits,” Opt. Express 21, 13975–13985 (2013).
[CrossRef] [PubMed]

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[CrossRef]

P. J. Mosley, A. Christ, A. Eckstein, C. Silberhorn, “Direct measurement of the spatial-spectral structure of waveguided parametric down-conversion,” Phys. Rev. Lett. 103, 233901 (2009).
[CrossRef]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, “Efficient conditional preparation of high-fidelity single photon states for fiber-optic quantum networks,” Phys. Rev. Lett. 93, 093601 (2004).
[CrossRef]

Sohler, W.

Soubusta, J.

R. Machulka, J. Svozilík, J. Soubusta, J. Peřina, O. Haderka, “Spatial and spectral properties of fields generated by pulsed second-harmonic generation in a periodically poled potassium-titanyl-phosphate waveguide,” Phys. Rev. A 87, 013836 (2013).
[CrossRef]

Spillane, S. M.

Steinlechner, F.

Suche, H.

B. Brecht, A. Eckstein, A. Christ, H. Suche, C. Silberhorn, “From quantum pulse gate to quantum pulse shaper–engineered frequency conversion in nonlinear optical waveguides,” New. J. Phys. 13, 065029 (2011).
[CrossRef]

Svozilík, J.

R. Machulka, J. Svozilík, J. Soubusta, J. Peřina, O. Haderka, “Spatial and spectral properties of fields generated by pulsed second-harmonic generation in a periodically poled potassium-titanyl-phosphate waveguide,” Phys. Rev. A 87, 013836 (2013).
[CrossRef]

Tanzilli, S.

Thomas, A.

Torres, J. P.

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U’Ren, A. B.

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, “Efficient conditional preparation of high-fidelity single photon states for fiber-optic quantum networks,” Phys. Rev. Lett. 93, 093601 (2004).
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[CrossRef]

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J. L. O’Brien, A. Furusawa, J. Vučković, “Photonic quantum technologies,” Nat. Photon. 3, 687–695 (2009).
[CrossRef]

Walmsley, I. A.

J. P. Torres, K. Banaszek, I. A. Walmsley, “Engineering nonlinear optic sources of photonic entanglement,” Progress in Optics 56, 227–331 (2011).
[CrossRef]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, “Efficient conditional preparation of high-fidelity single photon states for fiber-optic quantum networks,” Phys. Rev. Lett. 93, 093601 (2004).
[CrossRef]

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Zukowski, M.

M. Żukowski, A. Zeilinger, M. A. Horne, A. K. Ekert, “‘Event-ready-detectors’ Bell experiment via entanglement swapping,” Phys. Rev. Lett. 71, 4287–4290 (1993).
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Appl. Phys. Lett. (1)

M. Karpiński, C. Radzewicz, K. Banaszek, “Experimental characterization of three-wave mixing in a multi-mode nonlinear KTiOPO4 waveguide,” Appl. Phys. Lett. 94, 181105 (2009).
[CrossRef]

Nat. Photon. (1)

J. L. O’Brien, A. Furusawa, J. Vučković, “Photonic quantum technologies,” Nat. Photon. 3, 687–695 (2009).
[CrossRef]

New. J. Phys. (1)

B. Brecht, A. Eckstein, A. Christ, H. Suche, C. Silberhorn, “From quantum pulse gate to quantum pulse shaper–engineered frequency conversion in nonlinear optical waveguides,” New. J. Phys. 13, 065029 (2011).
[CrossRef]

Opt. Express (6)

Opt. Lett. (4)

Phys. Rev. A (3)

R. Machulka, J. Svozilík, J. Soubusta, J. Peřina, O. Haderka, “Spatial and spectral properties of fields generated by pulsed second-harmonic generation in a periodically poled potassium-titanyl-phosphate waveguide,” Phys. Rev. A 87, 013836 (2013).
[CrossRef]

W. P. Grice, R. Erdmann, I. A. Walmsley, D. Branning, “Spectral distinguishability in ultrafast parametric down-conversion,” Phys. Rev. A 57, R2289–R2292 (1998).
[CrossRef]

M. H. Rubin, “Transverse correlation in optical spontaneous parametric down-conversion,” Phys. Rev. A 54, 5349–5360 (1996).
[CrossRef] [PubMed]

Phys. Rev. Lett. (6)

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

M. Żukowski, A. Zeilinger, M. A. Horne, A. K. Ekert, “‘Event-ready-detectors’ Bell experiment via entanglement swapping,” Phys. Rev. Lett. 71, 4287–4290 (1993).
[CrossRef]

B. G. Christensen, K. T. McCusker, J. B. Altepeter, B. Calkins, T. Gerrits, A. E. Lita, A. Miller, L. K. Shalm, Y. Zhang, S. W. Nam, N. Brunner, C. C. W. Lim, N. Gisin, P. G. Kwiat, “Detection-loophole-free test of quantum nonlocality, and applications,” Phys. Rev. Lett. 111, 130406 (2013).
[CrossRef] [PubMed]

A. B. U’Ren, C. Silberhorn, K. Banaszek, I. A. Walmsley, “Efficient conditional preparation of high-fidelity single photon states for fiber-optic quantum networks,” Phys. Rev. Lett. 93, 093601 (2004).
[CrossRef]

P. J. Mosley, A. Christ, A. Eckstein, C. Silberhorn, “Direct measurement of the spatial-spectral structure of waveguided parametric down-conversion,” Phys. Rev. Lett. 103, 233901 (2009).
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Proc. SPIE (1)

M. Karpiński, C. Radzewicz, K. Banaszek, “Generation of spatially pure photon pairs in a multimode nonlinear waveguide using intermodal dispersion,” Proc. SPIE 8518, Quantum Communications and Quantum Imaging X, 85180J (2012).
[CrossRef]

Progress in Optics (1)

J. P. Torres, K. Banaszek, I. A. Walmsley, “Engineering nonlinear optic sources of photonic entanglement,” Progress in Optics 56, 227–331 (2011).
[CrossRef]

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Figures (6)

Fig. 1
Fig. 1

(a) Numerical simulations of phase matching for spontaneous parametric down-conversion in a 1 mm long PPKTP waveguide analogous to the structure used in the experiment, with the pump field prepared in the fundamental spatial mode of the waveguide. Separate phase matching bands correspond to different combinations of the spatial modes of H and V photons. The energy conservation condition is depicted with a solid white line. (b) The joint and marginal spectra of the generated photon pairs. Application of coarse spectral filtering represented by dashed lines allows one to select the spectral region where both the photons are generated in the fundamental waveguide modes 00H and 00V.

Fig. 2
Fig. 2

The PPKTP waveguide source of photon pairs and setups for (a) characterization of photon spectra, (b) measurement of two-photon interference, and (c) preparation of polarization entanglement in Shih-Alley configuration. λ/2, half-wave plate; POL, Glan-Taylor polarizer; IF, interference filter; DM, dichroic mirror; PBS, polarizing beam splitter; MMF, multimode fiber; SMF, single mode fiber; SPCM, single photon counting module; BSC, Babinet-Soleil compensator; BS, non-polarizing beam splitter, NDF, neutral density filter; CF, color filter.

Fig. 3
Fig. 3

The image of the output facet of the PPKTP waveguide illuminated with spatially incoherent white light (a) and transverse profiles of the fundamental P mode excited with the pump laser (b) as well as the fundamental H mode (c) and V mode (d) excited with the auxiliary Ti:sapphire laser beam. The intensity distributions were obtained by imaging the output facet of the waveguide onto a CCD camera using the outcoupling objective and a 200 mm focal length lens.

Fig. 4
Fig. 4

Heralded spectra of individual photons measured by rotating a 0.7 nm FWHM bandpass filter. Coincidence count rates (points, left scale) collected over 5 s intervals are fitted with Gaussian functions (solid lines) assuming Poissonian errors. Experimentally obtained spectral profiles of the interference filters used in measurements of two-photon interference: 11 nm, dashed-dotted line; 3 nm, dotted line (right scale).

Fig. 5
Fig. 5

Number of coincidence count rates (points) determined over 5 s intervals measured in the common-path Hong-Ou-Mandel interferometer as a function of the time delay for (a) 11 nm and (b) 3 nm interference filters placed at the interferometer entrance. Solid lines depict Gaussian fits assuming Poissonian errors for experimental points.

Fig. 6
Fig. 6

Coincidence count rates measured over 5 s intervals as a function of the angle θ of the collected linear polarization, when conjugate photons were detected in horizontal (H), vertical (V), diagonal (D), and antidiagonal (A) polarizations, shown for (a) 11 nm and (b) 3 nm interference filters placed at the setup entrance.

Tables (1)

Tables Icon

Table 1 Visibilities of polarization fringes obtained from measurements for multimode (MMF) and single mode (SMF) fibers in the setup for polarization entanglement preparation. Absolute uncertainties of presented values are approximately 1%. The last column specifies the source brightness for each combination of the interference filters and coupling fibers.

Equations (1)

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R ( θ ) 1 4 ( 1 + 𝒱 sin 2 θ ) ,

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