Profile
Outputs
| Title | Category | Date | Authors |
| A cavity-enhanced waveguide quantum memory University of Calgary, The University of Calgary | Presentation | 2014-06-19 | H. Mallahzadeh, N. Sinclair, D. Oblak, W. Tittel | | Spectral Multiplexing for Scalable Quantum Photonics using an Atomic Frequency Comb Quantum Memory and Feed-Forward Control University of Calgary | Publication | 2014-07-01 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. A. Slater, M. George, R. Ricken, M. P. Hedges, D. Oblak, C. Simon, W. Sohler, e. al | | Frequency-multiplexed photon storage and read-out on demand using an atomic frequency comb-based quantum memoryOptical quantum memories require the ability to reversibly map quantum states between photons and atoms [1]. When employed for quantum repeaters [2], quantum memories are key to enabling long-distance quantum communication. Towards this end, quantum memories require recall on demand with high fidelity and efficiency, long storage times, and the possibility to simultaneously store multiple carriers of quantum information. The combination of a quantum state storage protocol based on an atomic frequency comb (AFC) [3] with rare-earth-ion doped crystals cooled to cryogenic temperatures as storage materials [4] has been shown to meet many of these requirements. In particular, it is well suited for storage of temporally multiplexed photons [5,6]. Yet, despite first proof-of-principle demonstrations [7], recalling quantum information at a desired time (i.e. read-out on demand) with broadband, single-photon-level pulses remains an outstanding challenge.
We will present the first experimental demonstration of frequency-multiplexed storage of attenuated laser pulses followed by read-out on demand in the frequency domain. Our work is based on the AFC protocol and employs a Tm-doped LiNbO3 waveguide [8,9]. We will argue that, in view of a quantum repeater, our approach is equivalent to temporal multiplexing and read-out on demand in the temporal domain. This overcomes one further obstacle to building quantum repeaters using rare-earth-ion doped crystals as memory devices.
[1] A. I. Lvovsky, B. C. Sanders and W. Tittel. “Optical Quantum Memory”, Nature Photonics 3, 2009, 706.
[2] N. Sangouard et al. “Quantum repeaters based on atomic ensembles and linear optics”, Rev. Mod. Phys. 83, 2011, 33.
[3] M. Afzelius et al. “Multimode quantum memory based on atomic frequency combs”, Phys. Rev. A 79, 2009, 052329.
[4] W. Tittel et al. “Photon-echo quantum memory in solid state systems”, Las. Phot. Rev. 4 (2), 2010, 244.
[5] I. Usmani et al. “Mapping multiple photonic qubits into and out of one solid-state atomic ensemble”, Nature Commun. 1, 2010, 12.
[6] M. Bonarota, J.-L. Le Gouet, and T. Chanelière. “Highly multimode storage in a crystal”, New J. Phys. 13, 2011, 013013.
[7] M. Afzelius et al. “Demonstration of Atomic Frequency Comb Memory for Light with Spin- Wave Storage”, Phys. Rev. Lett. 104, 2010, 040503.
[8] E. Saglamyurek et al. “Broadband waveguide quantum memory for entangled photons”, Nature 469, 2011, 512.
[9] N. Sinclair et al. “Spectroscopic investigations of a Ti:Tm:LiNbO3 waveguide for photon-echo quantum memory”, J. Lumin. 130, 2010, 1586. University of Calgary, The University of Calgary | Presentation | 2012-08-27 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, C. Simon, D. Oblak, M. George, R. Ricken, C. Simon, W. Tittel | | Long distance quantum communications using quantum memories having on-demand recall in the frequency domain University of Calgary, The University of Calgary | Presentation | 2013-08-06 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, M. George, R. Ricken, M. Hedges, D. Oblak, W. Sohler, C. Simon, W. Tittel | | A frequency multi-mode Tm:LiNbO3 quantum memoryOptical quantum memories require the ability to reversibly map quantum information between photons and atoms [1]. When employed for quantum repeaters, quantum memories are the key to enabling long-distance quantum communication [2]. Quantum memories require recall with high fidelity and efficiency, long storage times, large bandwidth capabilities, and the possibility to store multiple modes for multiplexing\\r\\n[3]. Attractive material candidates for quantum memories, those of rare-earth-ion doped crystals, may serve to simultaneously fulfill all aforementioned requirements [4]. In this presentation, we show how a Tm:LiNbO3 crystal [5,6] cooled to cryogenic temperatures may serve as an efficient frequency-multiplexed quantum memory. Contrasting previous works that have focused on time-multiplexing [7, 8], we present measurements showing how the wide-band absorption line and large atomic sublevel splitting in Tm:LiNbO3 can be exploited for frequency multiplexing in a quantum repeater.\\r\\n\\r\\n[1] A. I. Lvovsky et. al., Nature Photon. 3, 706(2009).\\r\\n[2] H.-J. Briegel et al., Phys. Rev. Lett. 81, 5932 (1998).\\r\\n[3] N. Sangouard et al., Rev. Mod. Phys. 83, 33 (2011).\\r\\n[4] W. Tittel et al., Laser Photon. Rev. 4, 244 (2010).\\r\\n[5] E. Saglamyurek et al., Nature (London) 469, 512 (2011).\\r\\n[6] N. Sinclair et al., J. Lumin. 130, 1586 (2010).\\r\\n[7] I. Usmani et al., Nature Commun. 1, 12 (2010).\\r\\n[8] M Bonarota et. al., New J. Phys. 13, 013013 (2011).\\r\\n University of Calgary, The University of Calgary | Presentation | 2012-06-14 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, C. Simon, D. Oblak, M. George, R. Ricken, W. Sohler, W. Tittel | | A frequency multi-mode Tm:LiNbO3 quantum memoryOptical quantum memories require the ability to reversibly map quantum information
between photons and atoms [1]. When employed for quantum repeaters, quantum
memories are the key to enabling long-distance quantum communication [2]. Quantum
memories require recall with high fidelity and efficiency, long storage times, large
bandwidth capabilities, and the possibility to store multiple modes for multiplexing [3].
Attractive material candidates for quantum memories, those of rare-earth-ion doped
crystals, may serve to simultaneously fulfill all aforementioned requirements [4]. In this
presentation, we show how a Tm:LiNbO3 crystal [5, 6] cooled to cryogenic temperatures
may serve as an efficient frequency-multiplexed quantum memory. Contrasting previous
works that have focused on time-multiplexing [7, 8], we present measurements showing
how the wide-band absorption line and large atomic sublevel splitting in Tm:LiNbO3 can
be exploited for frequency multiplexing in a quantum repeater.
[1] A. I. Lvovsky et. al., Nature Photon. 3, 706 (2009).
[2] H.-J. Briegel et al., Phys. Rev. Lett. 81, 5932 (1998).
[3] N. Sangouard et al., Rev. Mod. Phys. 83, 33 (2011).
[4] W. Tittel et al., Laser Photon. Rev. 4, 244 (2010).
[5] E. Saglamyurek et al., Nature (London) 469, 512 (2011).
[6] N. Sinclair et al., J. Lumin. 130, 1586 (2010).
[7] I. Usmani et al., Nature Commun. 1, 12 (2010).
[8] M Bonarota et. al., New J. Phys. 13, 013013 (2011). University of Calgary, The University of Calgary | Presentation | 2012-07-25 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, C. Simon, D. Oblak, M. George, R. Ricken, W. Sohler, 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 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 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 | | Frequency multiplexed quantum memories with read-out on demand for quantum repeaters University of Calgary, The University of Calgary | Presentation | 2013-07-01 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, M. Hedges, M. George, R. Ricken, D. Oblak, C. Simon, W. Tittel | | Frequency-multiplexed quantum memories with read-out on demand for quantum repeaters University of Calgary, The University of Calgary | Presentation | 2013-07-15 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, M. Hedges, M. George, R. Ricken, D. Oblak, C. Simon, W. Tittel | | Quantum memories with read-out on demand for quantum repeaters University of Calgary, The University of Calgary | Presentation | 2013-09-16 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, M. George, R. Ricken, M. Hedges, D. Oblak, C. Simon, C. Simon, W. Tittel | | Quantum memory for long-distance quantum communication based on spectral multiplexing
University of Calgary, The University of Calgary | Presentation | 2014-03-04 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, M. George, R. Ricken, M. Hedges, D. Oblak, C. Simon, W. Tittel | | Frequency multiplexed quantum memories for quantum repeaters University of Calgary, The University of Calgary | Presentation | 2013-06-26 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, M. Hedges, D. Oblak, W. Tittel | | Spectrally multiplexed solid-state memories with feed-forward control for quantum repeatersWe present experimental work that demonstrates frequency-multiplexed quantum state storage in solid-state quantum memories with readout on demand. University of Calgary, The University of Calgary | Presentation | 2014-06-10 | N. Sinclair, E. Saglamyurek, H. Mallahzadeh, J. Slater, M. George, R. Ricken, M. Hedges, D. Oblak, C. Simon, 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 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 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 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 | | Macroscopic quantum communications using photonic qudits The University of Calgary, University of Calgary | Presentation | 2013-12-05 | W. Tittel, N. Sinclair, J. Slater, D. Oblak, I. Lucio Martinez, L. Giner, H. Mallahzadeh, L. P. Grimau, E. Saglamyurek | | 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 |
| |
