Profile
Outputs
| Title | Category | Date | Authors |
| Two-photon interference of weak coherent laser pulses recalled from separate solid-state quantum memories University of Calgary, The University of Calgary | Publication | 2013-08-01 | J. Jin, J. A. Slater, E. Saglamyurek, N. Sinclair, M. George, R. Ricken, D. Oblak, W. Sohler, W. Tittel | | Towards entanglement swapping with quantum-memory compatible photons University of Calgary, The University of Calgary | Presentation | 2014-09-02 | J. Jin, L. P. Grimau, L. Giner, J. Slater, M. Lamont, B. V. Verma, S. M. Shaw, F. Marsili, W. S. Nam, D. Oblak, W. Tittel | | Two-photon interference with attenuated laser pulses stored in separate solid-state memories University of Calgary, The University of Calgary | Presentation | 2012-06-11 | J. Jin, E. Saglamyurek, N. Sinclair, J. Slater, D. Oblak, M. George, R. Ricken, W. Sohler, W. Tittel | | Quantum storage of entangled telecom-wavelength photons in an erbium-doped optical fibre University of Calgary, The University of Calgary | Publication | 2015-01-01 | E. Saglamyurek, J. Jin, V. B. Verma, M. D. Shaw, F. Marsili, S. W. Nam, D. Oblak, W. Tittel | | Implementations of quantum protocols on optical networks: entanglement & time‐bin qubits University of Calgary, The University of Calgary | Presentation | 2011-11-04 | J. Slater, J. Jin, M. Lamont, W. Tittel | | Storage of entangled telecom-wavelength photons in an Er-doped optical fibre University of Calgary, The University of Calgary | Presentation | 2014-09-05 | E. Saglamyurek, J. Jin, B. V. Verma, S. M. Shaw, F. Marsili, W. S. Nam, D. Oblak, W. Tittel | | Testing nonlocality over 12.4 km of underground fiber with universal time-bin qubit analyzers University of Calgary, The University of Calgary | Publication | 2010-05-01 | F. Bussières, J. A. Slater, J. Jin, N. Godbout, W. Tittel | | Conditional Detection of Pure Quantum States of Light after Storage in a Tm-Doped Waveguide University of Calgary, The University of Calgary | Publication | 2012-02-01 | E. Saglamyurek, N. Sinclair, J. Jin, J. A. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, W. Sohler, W. Tittel | | Broadband waveguide quantum memory for entangled photons University of Calgary, The University of Calgary | Publication | 2011-01-01 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | A quantum tale of two different yet inseparable photons University of Calgary, The University of Calgary | Presentation | 2008-06-05 | F. Bussières, N. Godbout, J. Jin, S. Lacroix, J. Nguyen, J. Slater, Y. Soudagar, T. Stuart, W. Tittel | | Broadband waveguide quantum memory for entangled photons University of Calgary, The University of Calgary | Presentation | 2011-01-07 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Measuring entanglement with universal time-bin qubit analyzers University of Calgary, The University of Calgary | Presentation | 2009-07-30 | F. Bussières, J. Slater, J. Jin, N. Godbout, W. Tittel | | Convertible quantum encodings and hybrid entanglement on a real-world fiber link University of Calgary, The University of Calgary | Presentation | 2009-08-04 | F. Bussières, J. Slater, J. Jin, N. Godbout, S. Hosier, W. Tittel | | Integrated quantum memory for quantum communication University of Calgary, The University of Calgary | Presentation | 2010-07-05 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, F. Bussières, W. Tittel, M. George, R. Ricken, W. Sohler | | Integrated quantum memory for sub-nanosecond non-classical light University of Calgary, The University of Calgary | Presentation | 2010-10-20 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, W. Tittel, M. George, R. Ricken, W. Sohler | | Broadband Waveguide Quantum Memory for Entangled Photons University of Calgary, The University of Calgary | Presentation | 2011-05-20 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Broadband waveguide quantum memory for entangled photons University of Calgary, The University of Calgary | Presentation | 2011-06-07 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, W. Sohler, W. Tittel | | Broadband waveguide quantum memory for entangled photons University of Calgary, The University of Calgary | Presentation | 2011-07-18 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, W. Sohler, W. Tittel | | A broadband, waveguide quantum memory for entangled photons University of Calgary, The University of Calgary | Presentation | 2011-07-11 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, W. Tittel, F. Bussières, M. George, R. Ricken, W. Sohler | | Quantum memory for quantum repeater University of Calgary, The University of Calgary | Presentation | 2011-08-28 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, W. Sohler, W. Tittel | | Broadband waveguide quantum memory for entangled photons University of Calgary, The University of Calgary | Presentation | 2011-06-15 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Broadband waveguide quantum memory for entangled photons University of Calgary, The University of Calgary | Presentation | 2011-06-24 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Broadband waveguide quantum memory for entangled photons University of Calgary, The University of Calgary | Presentation | 2011-07-26 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, W. Sohler, W. Tittel | | Broadband waveguide quantum memory for entangled photonsReversible mapping of quantum states, particularly entangled states, between light and matter is important for advanced applications of quantum information science. This mapping, i.e. operation of a quantum memory [1], is imperative for realizing quantum repeaters [2] and quantum networks [3]. Here we report the reversible transfer of photon–photon entanglement into entanglement between a photon and a collective atomic excitation in a solid-state device [4] (see also [5]). Specifically, we generate time-bin enangled pairs of photons [6] at the low-loss 795 nm (in free-space) and 1532 nm (in fibre) wavelengths. The 795 nm photons are sent into a thulium-doped lithium niobate waveguide cooled to 3K, absorbed by the Tm ions, and retrieved after 7 ns by means of a photon-echo quantum memory protocol employing an atomic frequency comb [7]. The acceptance bandwidth of the memory has been expanded to 5 GHz, more than one order of magnitude larger than the previous state-of-the-art [8], to match the spectral width of the filtered 795 nm photons. The entanglement-preserving nature of our storage device is assessed through quantum state tomography before and after storage. Within statistical error, we find a perfect mapping process. Furthermore, by violating the CHSH inequality [9], we directly verify the nonlocal nature of the generated and stored entangled photons.
[1] A. Lvovsky, B. C. Sanders, and W. Tittel, Optical quantum memory, Nature Photonics 3, 706-71 (2009).
[2] N. Sangouard et al., Quantum repeaters based on atomic ensembles and linear optics, Rev. Mod. Phys. 83, 33-80 (2011).
[3] H. J. Kimble, The quantum internet, Nature 453, 1023-1030 (2008).
[4] E. Saglamyurek et al., Broadband waveguide quantum memory for entangled photons, Nature 469, 512-515 (2011).
[5] C. Clausen et al., Quantum storage of photonic entanglement in a crystal, Nature 469, 508-511 (2011).
[6] I. Marcikic et al., Distribution of time-bin entangled qubits over 50 km of optical fiber, Phys. Rev. Lett. 93, 180502 (2004).
[7] M. Afzelius et al., Multimode quantum memory based on atomic frequency combs, Phys. Rev. A 79, 052329 (2009).
[8] I. Usmani et al., Mapping multiple photonic qubits into and out of one solid-state atomic ensemble, Nat. Comm. 1 (12), 1-7 (2010).
[9] J. F. Clauser et al., Proposed experiment to test local hidden-variable theories, Phys. Rev. Lett. 23, 880-884 (1969). University of Calgary, The University of Calgary | Presentation | 2011-08-10 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Broadband waveguide quantum memory for entangled photonsQuantum information processing and communication relies on encoding information into quantum states of physical systems such as photons [1]. Actualizing a quantum interface [2] between light and matter is imperative for construction of a quantum repeater [3], which requires a faithful mapping of quantum entanglement [1] between light and matter. In this work we report the reversible transfer of photon-photon entanglement into entanglement between a photon and a collective atomic excitation in a solid-state thulium-doped lithium niobate waveguide [4] (this transfer was simultaneously done in [5]). References: [1] J.-W. Pan et al. arXiv:0805.2853, 2008. [2] A. I. Lvovsky, B. C. Sanders, & W. Tittel. Nat Photon, 3 (12): 706-714, 2009. [3] N. Sangouard et al. arXiv:0906.2699, 2009. [4] E. Saglamyurek et al. Nature, 469 (7331): 512-515, 2011. [5] C. Clausen et al. Nature, 469 (7331): 508-511, 2011. University of Calgary, The University of Calgary | Presentation | 2011-08-25 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Quantum memory for quantum repeater University of Calgary, The University of Calgary | Presentation | 2011-09-18 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Experiments with waveguide quantum memory for light University of Calgary, The University of Calgary | Presentation | 2012-07-23 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Solid-state photon-echo quantum memory for quantum repeaters University of Calgary, The University of Calgary | Presentation | 2013-02-06 | E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Towards quantum repeaters using frequency multiplexing University of Calgary, The University of Calgary | Presentation | 2013-05-28 | L. P. Grimau, J. Slater, J. Jin, N. Sinclair, E. Saglamyurek, D. Oblak, M. Hedges, H. Mallahzadeh, W. Tittel | | Broadband waveguide quantum memory for entangled photons University of Calgary, The University of Calgary | Publication | 2011-01-01 | E. Saglamyurek, N. Sinclair, J. Jin, J. A. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, W. Sohler, W. Tittel | | Integrated quantum memory for quantum communication University of Calgary, The University of Calgary | Presentation | 2010-06-02 | E. Saglamyurek, N. Sinclair, J. Slater, J. Jin, F. Bussières, C. La Mela, W. Tittel, M. George, R. Ricken, W. Sohler | | Broadband waveguide quantum memory for entangled photons The University of Calgary, University of Calgary | Presentation | 2011-03-10 | W. Tittel, E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, D. Oblak, M. George, R. Ricken, W. Sohler | | Quantum repeaters with broadband waveguide quantum memory University of Calgary, The University of Calgary | Presentation | 2013-11-25 | J. Slater, E. Saglamyurek, N. Sinclair, J. Jin, H. Mallahzadeh, L. P. Grimau, L. Giner, F. Bussières, M. Hedges, D. Oblak, C. Simon, M. George, R. Ricken, C. Simon, W. Tittel | | Quantum memory and entanglement storage in rare-earth ion doped crystals University of Calgary, The University of Calgary | Presentation | 2011-09-04 | D. Oblak, E. Saglamyurek, N. Sinclair, J. Jin, J. Slater, M. Lamont, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Quantum memory and entanglementReversibly mapping entanglement between photons and atoms, which serve as quantum memory, and projecting independent (pure) photonic quantum states after recall from such a memory onto entangled states are key to quantum repeaters and, more generally, quantum networks [1]. In this talk we present the reversible mapping of quantum information encoded into one of two time-bin entangled photons using a photon-echo quantum memory protocol [2] (for closely related work see [3]). Our results show, within experimental uncertainty, that the encoded quantum information, i.e. the property of the stored photon being one member of an entangled pair, can be retrieved without degradation. Furthermore, we will demonstrate two-photon interference and the projection onto an entangled state using attenuated pulses of light (featuring an average of less than one photon per pulse) that have, or have not, been reversibly mapped to separate quantum memories. As the interference visibility is close to the theoretical maximum, regardless of whether none, one, or both pulses have previously been stored, we conclude that our solid-state quantum memories preserve not only encoded quantum information, but the entire photonic wave function during storage. Both investigations take advantage of thulium-doped lithium niobate waveguide quantum memories as storage materials, and employ a photon-echo type quantum memory approach based on atomic frequency combs [4]. Our findings complete previously missing steps towards advanced applications of quantum information processing, and bring us closer to building quantum repeaters, networks, and linear optics quantum computers.
[1] N. Sangouard et al. “Quantum repeaters based on atomic ensembles and linear optics”, Rev. Mod. Phys. 83, 2011, 33.
[2] E. Saglamyurek et al. “Broadband waveguide quantum memory for entangled photons”, Nature 469, 2011, 512.
[3] C. Clausen et al. “Quantum storage of photonic entanglement in a crystal”, Nature 459, 2011, 508.
[4] M. Afzelius et al. “Multimode quantum memory based on atomic frequency combs”, Phys. Rev. A 79, 2009, 052329. University of Calgary, The University of Calgary | Presentation | 2012-08-27 | E. Saglamyurek, N. Sinclair, H. Mallahzadeh, J. Jin, J. Slater, D. Oblak, F. Bussières, M. George, R. Ricken, C. Simon, W. Tittel | | Quantum repeaters with broadband waveguide quantum memory University of Calgary, The University of Calgary | Presentation | 2013-09-26 | J. Slater, E. Saglamyurek, N. Sinclair, J. Jin, H. Mallahzadeh, L. P. Grimau, F. Bussières, M. Hedges, D. Oblak, C. Simon, M. George, R. Ricken, C. Simon, W. Tittel | | Quantum repeaters with broadband waveguide quantum memory University of Calgary, The University of Calgary | Presentation | 2013-09-20 | J. Slater, E. Saglamyurek, N. Sinclair, J. Jin, H. Mallahzadeh, L. P. Grimau, F. Bussières, M. Hedges, D. Oblak, C. Simon, M. George, R. Ricken, C. Simon, W. Tittel | | Quantum Communication in the QC2 Lab University of Calgary, The University of Calgary | Presentation | 2011-07-06 | P. Chan, C. Dascollas, C. Healey, S. Hosier, J. Jin, V. Kiselyov, M. Lamont, I. Lucio Martinez, D. Oblak, A. Rubenok, E. Saglamyurek, N. Sinclair, J. Slater, T. Stuart, W. Tittel | | Measuring entanglement with universal time-bin qubit analyzers University of Calgary, The University of Calgary | Presentation | 2009-11-06 | G. Berlin, G. Brassard, F. Bussières, N. Godbout, J. Jin, J. Slater, W. Tittel | | Frequency-multiplexed photon storage and read-out on demand using an atomic frequency comb-based quantum memory University of Calgary, The University of Calgary | Presentation | 2012-09-11 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, J. Jin, D. Oblak, M. George, R. Ricken, C. Simon, W. Tittel | | Quantum repeaters using frequency-multiplexed quantum memories University of Calgary, The University of Calgary | Presentation | 2012-08-02 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, J. Jin, C. Simon, D. Oblak, M. George, R. Ricken, C. Simon, W. Tittel | | Towards quantum repeaters based on frequency multiplexing in RE lon doped solids University of Calgary, The University of Calgary | Presentation | 2013-07-17 | J. Slater, N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Jin, M. George, R. Ricken, M. Hedges, D. Oblak, C. Simon, W. Tittel | | Quantum Information devices in rate-Earth ion doped waveguide materials University of Calgary, The University of Calgary | Presentation | 2015-01-07 | D. Oblak, N. Sinclair, E. Saglamyurek, K. Heshami, J. Jin, H. Mallahzadeh, T. Lutz, L. Veissier, J. Slater, M. Hedges, M. George, R. Ricken, B. V. Verma, F. Marsili, S. M. Shaw, W. C. Thiel, L. R. Cone, C. Simon, W. S. Nam, W. Tittel |
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