2-7 June 2019
Simon Fraser University
America/Vancouver timezone
Welcome to the 2019 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2019 !

Quantum optics approaches for quantum networks and other applications

5 Jun 2019, 13:45
30m
BLU 10011 (Simon Fraser University)

BLU 10011

Simon Fraser University

Invited Speaker / Conférencier(ère) invité(e) Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC) W2-2 Quantum Information (DAMOPC/DTP) | Information quantique (DPAMPC/DPT)

Speaker

Christoph Simon (University of Calgary)

Description

Quantum networks promise many exciting applications from secure communication over distributed sensing to distributed quantum computation. I will describe several efforts related to designing the hardware architecture for such quantum networks. One approach towards a global quantum network combines quantum communication satellites with quantum repeaters . An important capability in this context is the ability to detect photonic qubits non-destructively, which may be possible in solids using single rare-earth ions or ensembles of rare-earth ions . Single rare-earth ions are also promising for the implementation of quantum repeaters . An attractive approach towards distributed quantum computing is to connect superconducting quantum processors via optical channels . This requires the transduction of photons from the microwave to the optical domain, which may also be possible using rare-earth ion ensembles in solids . In the long term it would be highly desirable to realize quantum networks whose components can operate at ambient temperature. This may be possible using plasmonics or spin-optomechanics approaches. Finally it is interesting to ask whether there could be quantum networks in the brain . Besides quantum networks, I will also briefly describe efforts towards bringing quantum effects to the macroscopic level , as well as an approach towards super-resolution imaging using heterodyne detection.

K. Boone et al., Entanglement over global distances via quantum repeaters with satellite links, Phys. Rev. A 91, 052325 (2015); C. Simon, Towards a global quantum network, Nat. Photon. 11, 678 (2017).
C. O’Brien, T. Zhong, A. Faraon and C. Simon, Non-destructive photon detection using a single rare-earth ion coupled to a photonic cavity, Phys. Rev. A 94, 043807 (2016).
N. Sinclair et al., Cross-phase modulation of a probe stored in a waveguide for non-destructive detection of photonic qubits, Nat. Comm. 7, 13454 (2016); S. Goswami, K. Heshami and C. Simon, Theory of cavity-enhanced non-destructive detection of photonic qubits in a solid-state atomic ensemble, Phys. Rev. A 98, 043842 (2018).
F. Kimiaee Asadi et al., Quantum Repeaters with individual rare-earth ions at telecommunication wavelengths, Quantum 2, 93 (2018).
S. Kumar, N. Lauk and C. Simon, Towards long-distance quantum networks with superconducting processors and optical links, arXiv:1812.08634
S. Welinski et al., Electron Spin Coherences in Rare-Earth Optically Excited States for Microwave to Optical Quantum Transducers, arXiv:1802.03354
S. Wein, N. Lauk, R. Ghobadi and C. Simon, Towards room temperature indistinguishable single-photon sources using ultra-small mode volume cavities and solid-state emitters, Phys. Rev. B 97, 205418 (2018).
R. Ghobadi et al., Towards a Room-Temperature Spin-Photon Interface based on Nitrogen-Vacancy Centers and Optomechanics, arXiv:1711.02027.
S. Kumar et al., Possible existence of optical communication channels in the brain, Sci. Rep. 6, 36508 (2016).
P. Zarkeshian et al., Entanglement between more than two hundred macroscopic atomic ensembles in a solid, Nat. Comm. 8, 906 (2017); D.V. Sychev et al., Entanglement of macroscopically distinct states of light, arXiv:1811.01041.
F. Yang et al., Far-field linear optical superresolution via heterodyne detection in a higher-order local oscillator mode, Optica 3, 1148 (2016); F. Yang et al., Fisher information for far-field linear optical superresolution via homodyne or heterodyne detection in a higher-order local oscillator mode, Phys. Rev. A 96, 063829 (2017).

Primary author

Christoph Simon (University of Calgary)

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