## Highly indistinguishable heralded single-photon sources using parametric down conversion |

Optics Express, Vol. 20, Issue 14, pp. 15275-15285 (2012)

http://dx.doi.org/10.1364/OE.20.015275

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### Abstract

We theoretically and experimentally investigate the conditions necessary to realize highly indistinguishable single-photon sources using parametric down conversion. The visibilities of Hong–Ou–Mandel (HOM) interference between photons in different fluorescence pairs were measured and a visibility of 95.8 ± 2% was observed using a 0.7-mm-long beta barium borate crystal and 2-nm bandpass filters, after compensating for the reflectivity of the beam splitter. A theoretical model of HOM interference visibilities is proposed that considers non-uniform down conversion process inside the nonlinear crystal. It well explains the experimental results.

© 2012 OSA

**OCIS Codes**

(270.5290) Quantum optics : Photon statistics

(270.5585) Quantum optics : Quantum information and processing

**ToC Category:**

Quantum Optics

**History**

Original Manuscript: April 18, 2012

Revised Manuscript: May 25, 2012

Manuscript Accepted: May 29, 2012

Published: June 22, 2012

**Citation**

Masato Tanida, Ryo Okamoto, and Shigeki Takeuchi, "Highly indistinguishable heralded single-photon sources using parametric down conversion," Opt. Express **20**, 15275-15285 (2012)

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-14-15275

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### References

- C. H. Bennett and G. Brassard, “Quantum cryptography: public key distribution and coin tossing,” Proceedings of IEEE International Conference on Computers Systems and Signal Processing175–179 (1984).
- M. A. Nielsen and I. L. Chuang, Quantum Computation and Quantum Information, (Cambridge University Press, Cambridge, England, 2000).
- V. Giovannetti, S. Lloyd, and L. Maccone, “Quantum-enhanced measurements: beating the standard quantum limit,” Science306, 1330–1336 (2004). [CrossRef] [PubMed]
- E. Knill, R. Laflamme, and G. J. Milburn, “A scheme for efficient quantum computation with linear optics,” Nature (London)409, 46–52 (2001). [CrossRef]
- C. K. Hong, Z. Y. Ou, and L. Mandel, “Measurement of subpicosecond time intervals between two photons by interference,” Phys. Rev. Lett.59, 2044–2046 (1987). [CrossRef] [PubMed]
- T. C. Ralph, N. K. Langford, T. B. Bell, and A. G. White, “Linear optical controlled-NOT gate in the coincidence basis,” Phys. Rev. A65, 062324 (2002). [CrossRef]
- H. F. Hofmann and S. Takeuchi, “Quantum phase gate for photonic qubits using only beam splitters and postse-lection,” Phys. Rev. A66, 024308 (2002). [CrossRef]
- J. L. O’Brien, G. J. Pryde, A. G. White, T. C. Ralph, and D. Branning, “Demonstration of an all-optical quantum controlled-NOT gate,” Nature (London)426, 264–267 (2003). [CrossRef]
- N. K. Langford, T. J. Weinhold, R. Prevedel, K. J. Resch, A. Gilchrist, J. L. O’Brien, G. J. Pryde, and A. G. White, “Demonstration of a simple entangling optical gate and its use in Bell-state analysis,” Phys. Rev. Lett.95, 210504 (2005). [CrossRef] [PubMed]
- N. Kiesel, C. Schmid, U. Weber, R. Ursin, and H. Weinfurter, “Linear optics controlled-phase gate made simple,” Phys. Rev. Lett.95, 210505 (2005). [CrossRef] [PubMed]
- R. Okamoto, H. F. Hofmann, S. Takeuchi, and K. Sasaki, “Demonstration of an optical quantum controlled-NOT gate without path interference,” Phys. Rev. Lett.95, 210506 (2005). [CrossRef] [PubMed]
- R. Okamoto, J. L. O’Brien, H. F. Hoffman, T. Nagata, K. Sasaki, and S. Takeuchi, “An entanglement filter,” Science323, 483–485 (2009). [CrossRef] [PubMed]
- B. P. Lanyon, M. Barbieri, M. P. Almeida, T. Jennewein, T. C. Ralph, K. J. Resch, G. J. Pryde, J. L. O’Brien, A. Gilchrist, and A. G. White, “Simplifying quantum logic using higher-dimensional Hilbert spaces,” Nat. Phys.5, 134–140 (2009). [CrossRef]
- R. Okamoto, J. L. O’Brien, H. F. Hofmann, and S. Takeuchi, “Realization of a Knill-Laflamme-Milburn C-NOT gate a photonic quantum circuit combining effective optical nonlinearities,” Proc. Natl. Acad. Sci. USA108, 10067–10071 (2011). [CrossRef] [PubMed]
- H. Lee, P. Kok, and J. P. Dowling, “A quantum Rosetta stone for interferometry,” J. Mod. Opt.49, 2325–2338 (2002). [CrossRef]
- T. Nagata, R. Okamoto, J. L. O’Brien, K. Sasaki, and S. Takeuchi, “Beating the standard quantum limit with four-entangled photons,” Science316, 726–729 (2007). [CrossRef] [PubMed]
- N. Boto, P. Kok, D. S. Abrams, S. L. Braunstein, C. P. Williams, and J. P. Dowling, “Quantum interferometric optical lithography: exploiting entanglement to beat the diffraction limit,” Phys. Rev. Lett.85, 2733–2736 (2000). [CrossRef] [PubMed]
- Y. Kawabe, H. Fujiwara, R. Okamoto, K. Sasaki, and S. Takeuchi, “Quantum interference fringes beating the diffraction limit,” Opt. Express15, 14244–14250 (2007). [CrossRef] [PubMed]
- T. Nagata, R. Okamoto, H. F. Hofmann, and S. Takeuchi, “Analysis of experimental error sources in a linear-optics quantum gate,” New J. Phys.12, 043053 (2010). [CrossRef]
- T. Jennewein, R. Ursin, M. Aspelmeyer, and A. Zeilinger, “Performing high-quality multi-photon experiments with parametric down-conversion,” J. Phys. B42, 114008 (2009). [CrossRef]
- P. R. Tapster and J. G. Rarity, “Photon statistics of pulsed parametric light,” J. Mod. Opt.45, 595–604 (1998). [CrossRef]
- H. R. Zhang and R. P. Wang, “Theory of fourfold interference with photon pairs from spatially separated sources,” Phys. Rev. A75, 053804 (2007). [CrossRef]
- M. Barbieri, “Effects of frequency correlation in linear optical entangling gates operated with independent photons,” Phys. Rev. A76, 043825 (2007). [CrossRef]
- R. Kaltenbaek, R. Prevedel, M. Aspelmeyer, and A. Zeilinger, “High-fidelity entanglement swapping with fully independent sources,” Phys. Rev. A79, 040302(R) (2009). [CrossRef]
- M. Zukowski, A. Zeilinger, and H. Weinfurter, “Entangling independent pulsed photon sources,” Ann. N.Y. Acad. Sci.755, 91–102 (1995). [CrossRef]
- R. Kaltenbaek, B. Blauensteiner, M. Zukowski, M. Aspelmeyer, and A. Zeilinger, “Experimental interference of independent photons,” Phys. Rev. Lett.96, 240502 (2006). [CrossRef] [PubMed]
- R. Kaltenbaek, 2008 PhD Thesis.
- S. M. Saltiel, K. Koynov, B. Agate, and W. Sibbett, “Second-harmonic generation with focused beams under conditions of large group-velocity mismatch,” J. Opt. Soc. Am. B21, 591–598 (2004). [CrossRef]
- Y. Kawabe, H. Fujiwara, S. Takeuchi, and K. Sasaki, “Investigation of the spatial propagation properties of type-I parametric fluorescence by use of tuning curve filtering method,” Jpn. J. Appl. Phys.46, 5802–5808 (2007). [CrossRef]

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