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A cavity-enhanced waveguide quantum memory

A cavity-enhanced waveguide quantum memory . Hassan Mallahzadeh , Daniel Oblak , Neil Sinclair, Wolfgang Tittel Canadian Association of Physicists congress, Sudbury, Ontario June 19, 2014. The quest for an efficient optical quantum memory. Quantum Memory.

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A cavity-enhanced waveguide quantum memory

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  1. A cavity-enhanced waveguide quantum memory Hassan Mallahzadeh, Daniel Oblak, Neil Sinclair, Wolfgang Tittel Canadian Association of Physicists congress, Sudbury, Ontario June 19, 2014

  2. The quest for an efficient optical quantum memory Quantum Memory Nature Photonics 3, 706 - 714 (2009)

  3. Frequency Comb memoryThe Mathematical Background Fourier transform Δν Δt= Fourier transform Frequency Time

  4. Frequency Comb memoryThe Physical Limitations • Limited absorption pick height • Finite absorption pick width • Kramers-KronigRelations

  5. The cavity enhanced frequency comb memory input Memory output Front mirror T=Round trip absorption Back mirror R=100%. d f Phys. Rev. A 82, 022310 (2010) Phys. Rev. Lett. 110, 133604 (2013)

  6. The Atomic Frequency Comb (AFC) in rare earth ion doped crystals Ti:Tm:LiNbO3 • Very narrow homogenous line width (0.1-100KHz) at cryogenic temperatures(~<4k)., Phys. Rev. A 79, 052329 (2009)

  7. The experiment’s layout Cryostat T<1k Ti:Tm:LiNbO3 AOM PM Laser R=1 BS Detector

  8. Hole burning results 10 GHz 10 GHz

  9. Have to be done: • Make an AFC inside the cavity by hole burning on equal intervals • Minimize the reflected light • Perform the experiment at single photon level

  10. Thank You!

  11. Backup slide R2=14% Crystal Fiber R1=4% R3=100%

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