Profile
Outputs
| Title | Category | Date | Authors |
| Precision requirements for spin-echo-based quantum memories University of Calgary | Publication | 2011-03-01 | K. Heshami, N. Sangouard, J. Minár, H. d. Riedmatten, C. Simon | | Controllable-dipole quantum memory University of Calgary, The University of Calgary | Publication | 2012-07-01 | K. Heshami, A. Green, Y. Han, A. Rispe, E. Saglamyurek, N. Sinclair, W. Tittel, C. Simon | | Raman quantum memory based on an ensemble of nitrogen-vacancy centers coupled to a microcavity University of Calgary | Publication | 2014-04-01 | K. Heshami, C. M. Santori, B. Khanaliloo, C. Healey, V. M. Acosta, P. E. Barclay, C. Simon | | Matrix Product States and Quantum Phase TransitionThe study of strongly correlated systems attracts much attention from condensed matter physicists since quantum fluctuations introduce different phases with interesting physical properties. Several numerical and analytical approaches have been developed to investigate properties of low lying states. However, there is no specific framework in place to deal with the challenging problem of Quantum Phase Transition (QPT). We propose a method to detect some of QPTs based on a matrix product representation of the ground state of strongly correlated systems with local Hamiltonians. As a confirmation of our proposed method, we show that our analytical results compare favorably with numerical studies of XXZ spin-one chain with uniaxial single-ion-type anisotropy. University of Calgary | Presentation | 2010-02-24 | K. Heshami, S. Raeisi | | Controllable-dipole quantum memory University of Calgary, The University of Calgary | Presentation | 2012-07-24 | K. Heshami, A. Green, Y. Han, C. Simon, E. Saglamyurek, N. Sinclair, W. Tittel, C. Simon | | Precision requirements for spin‐echo based quantum memories University of Calgary | Presentation | 2011-06-07 | K. Heshami, N. Sangouard, J. Minar, H. R. de, C. Simon | | Controllable-dipole quantum memory University of Calgary, The University of Calgary | Presentation | 2012-06-11 | K. Heshami, A. Green, Y. Han, C. Simon, E. Saglamyurek, N. Sinclair, W. Tittel, C. Simon | | Controllable-dipole quantum memory University of Calgary, The University of Calgary | Publication | 2012-07-01 | K. Heshami, A. Green, Y. Han, A. Rispe, E. Saglamyurek, N. Sinclair, W. Tittel, C. Simon | | Raman quantum memory based on an ensemble of nitrogen-vacancy centers coupled to a microcavity University of Calgary | Publication | 2014-06-01 | K. Heshami, C. M. Santori, B. Khanaliloo, C. H. C, V. M. Acosta, P. E. Barclay, C. Simon | | Raman optical quantum memory in NV ensembles coupled to a cavity University of Calgary | Publication | 2013-08-01 | K. Heshami, C. Healey, B. Khanaliloo, V. Acosta, C. M. Santori, P. E. Barclay, C. Simon | | Raman quantum memory based on an ensemble of nitrogen-vacancy centers coupled to amicrocavity University of Calgary | Publication | 2014-02-01 | K. Heshami, C. M. Santori, B. Khanaliloo, C. Healey, V. M. Acosta, P. E. Barclay, C. Simon | | Photonic quantum memory in two-level ensembles based on modulating the refractive index in time: Equivalence to gradient echo memory University of Calgary | Publication | 2012-07-01 | J. Clark, K. Heshami, C. Simon | | Photon-photon gate via the interaction between two collective Rydberg excitations University of Calgary | Publication | 2015-03-01 | M. Khazali, K. Heshami, C. Simon | | Quantum memory based on controllable transition dipole momentTo build quantum memory for light with atomic ensembles one need to map single photons into atomic excitations and freeze them until releasing them back to photons on demand. Here we present an idea for realizing this storage-recall procedure by directly turning transition dipole moment on and off in a two-level system. An analytical treatment of the problem is performed and the physical requirements on the proposed scheme are discussed. Employing a magneto-dependent transition dipole moment in Tm3+: YAG crystal, we show a good instructive quantum memory using this simple idea. University of Calgary, The University of Calgary | Presentation | 2010-09-11 | Y. Han, K. Heshami, A. Rispe, E. Saglamyurek, N. Sinclair, C. Simon, W. Tittel, C. Simon | | Photonic controlled-phase gate based on Rydberg interactions University of Calgary | Presentation | 2014-08-07 | M. Khazali, K. Heshami, C. Simon | | Photonic quantum memory in two-level ensembles based on refractive index modulation: equivalence to gradient echo memory University of Calgary | Presentation | 2012-07-25 | C. Simon, K. Heshami, C. Simon | | Quantum repeaters based on Rydberg-blockade-coupled atomic ensembles University of Calgary | Publication | 2010-05-01 | Y. Han, B. He, K. Heshami, C. Li, C. Simon | | Controllable-dipole quantum memory University of Calgary, The University of Calgary | Presentation | 2011-06-07 | A. Green, Y. Han, K. Heshami, A. Rispe, E. Saglamyurek, N. Sinclair, W. Tittel, C. Simon | | Detuning-change Quantum memory University of Calgary | Presentation | 2012-06-11 | H. Kaviani, M. Khazali, K. Heshami, C. Simon | | Detuning-change Quantum memory University of Calgary | Presentation | 2012-07-25 | H. Kaviani, M. Khazali, K. Heshami, C. Simon | | Controlled-dipole quantum memory University of Calgary, The University of Calgary | Publication | 2012-07-01 | A. Green, Y. Han, K. Heshami, A. Rispe, E. Saglamyurek, N. Sinclair, W. Tittel, C. Simon | | An integrated processor for photonic quantum states using a broadband light–matter interface University of Calgary, The University of Calgary | Publication | 2014-06-01 | E. Saglamyurek, N. Sinclair, J. A. Slater, K. Heshami, D. Oblak, W. Tittel | | An integrated processor for photonic quantum states using a broadband light-matter interface University of Calgary, The University of Calgary | Publication | 2014-01-01 | E. Saglamyurek, N. Sinclair, J. Slater, K. Heshami, D. Oblak, W. Tittel | | An integrated processor for photonic quantum states using a broadband light-matter interface University of Calgary, The University of Calgary | Presentation | 2014-05-28 | E. Saglamyurek, N. Sinclair, J. Slater, K. Heshami, D. Oblak, W. Tittel | | An integrated processor for photonic quantum states using a broadband light-matter interface University of Calgary, The University of Calgary | Presentation | 2014-07-14 | E. Saglamyurek, N. Sinclair, J. Slater, K. Heshami, D. Oblak, 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 | | Rydberg scattering of frozen spin-waves University of Calgary | Presentation | 2013-06-26 | M. Khazali, C. Simon, B. He, K. Heshami | | An integrated processor for photonic quantum states using a broadband light-matter interface University of Calgary | Publication | 2014-06-01 | E. Saglamyurek, N. Sinclair, J. A. Slater, K. Heshami, D. Oblak | | Entanglement over global distances via quantum repeaters with satellite links University of Calgary | Publication | 2014-10-01 | K. Boone, J. P. Bourgoin, E. Meyer-Scott, K. Heshami, T. Jennewein, C. Simon | | Quantum storage and retrieval of light by sweeping the atomic frequency University of Calgary | Publication | 2013-08-01 | H. Kaviani, M. Khazali, R. Ghobadi, E. Zahedinejad, K. Heshami, C. Simon | | Polaritonic quantum memory with two-level systemsGenerating efficient quantum memories is crucial for the future Information processing. One of the well-known methods for describing quantum memories and analyzing the nature of coupling between light and matter is Polariton model. We analyze a light storage protocol based on cavity arrays [1] in terms of two-level polaritons, which is different from the typical EIT polaritons [2]. The cavity array scheme moreover inspires us to propose a quantum memory scheme with atomic ensembles. The scheme [1] is based on two types of cavities, wave-guide and side cavities. The coupled system possesses two eigen-states (polaritons) corresponding to two different group velocities. One can launch the incoming light into one of these polaritons and changes its group velocity by adiabatic modulation of the detuning between side-cavities and waveguide-cavities. In principle, this allows us to reduce the group velocity to zero, while the adiabaticity guarantees that the eigen-states (polaritons) remain separated during the process. Based on the cavity array model, we introduce an ideal and reversible transfer technique for the quantum state between light and two level atoms. The method is based on the control of photon propagation in the medium, in which the group velocity could be manipulated by the detuning and adiabatically reduced to zero. We present a detailed analysis for this model based on polaritonic description. [1] M. F. Yanik, S. Fan, Physical Review Letters, 92, (2004). [2] M. Fleischhauer, M. D. Lukin, Phys. Rev. Lett. 84, 5094. (2000). University of Calgary | Presentation | 2012-06-12 | M. Khazali, C. Simon, H. Kaviani, R. Ghobadi, K. Heshami | | Long range quantum key distribution using frequency multiplexing in broadband solid state memories The University of Calgary, University of Calgary | Presentation | 2014-06-10 | H. Krovi, Z. Dutton, S. Guha, C. Fuchs, W. Tittel, C. Simon, J. Slater, K. Heshami, M. Hedges, S. G. Kanter, -. P. Huang, W. C. Thiel |
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