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International Conference on Quantum Information (2008)

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  • International Conference on Quantum Information (ICQI) 2008 paper: JMB42
  • Thiel, Christoph; Maser, Andreas; Bastin, Thierry; Solano, Enrique; von Zanthier, Joachim
  • We propose a method mimicking the coupling of N qubits to a compound system using linear optics only. Our scheme employs N atoms with Λ-configuration and offers access...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB43
  • Cassemiro, Katiúscia N; Villar, Alessandro S; Martinelli, Marcelo; Nussenzveig, Paulo A
  • We measured triple quantum correlations between the bright beams in an optical parametric oscillator, operating above threshold. Owing to extra noise in the system, still unaccounted...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB44
  • Habibian, Hessam; Clark, John W; Hingerl, Kurt; Bergmair, Michael
  • We have considered GHZ\W entanglement in non-interacting Fermi gas. For this aim we have introduced new class of GHZ-Witnesses. We have shown that for tripartite Fermi systems GHZ\W...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB45
  • Souza, Carlos Eduardo R; Huguenin, Jose Augusto O; Milman, Perola; Khoury, Antonio Z
  • We investigate the topological phase associated with the SO(3) representation in terms of maximally entangled states. An experimental demonstration of this topological phase is...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB46
  • Gilbert, Gerald; Hamrick, Michael; Weinstein, Yaakov S; Aggarwal, Vaneet; Calderbank, Robert
  • We introduce a universal operator theoretic framework for quantum fault tolerance that incorporates a top-down approach based on specification of the full system dynamics. This...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB47
  • Dolgaleva, Ksenia; Shin, Heedeuk; Boyd, Robert W; Sipe, John E
  • We show that there are cascaded contributions from the third-order microscopic hyperpolarizability to the fifth-order susceptibility induced by local-field effects which can be...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB48
  • Bastin, Thierry; Thiel, Christoph; von Zanthier, Joachim; Lamata, Lucas; Solano, Enrique; Agarwal, Girish S
  • We show that for a system of N emitters, incoherently radiating single photons it is possible to associate well-defined sets of experimental parameters with multiqubit entanglement...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB49
  • Chan, Kam Wai C; O'Sullivan, Malcolm N; Malik, Mehul; Boyd, Robert W
  • We study a quantum ghost imaging system that uses different wavelengths to illuminate the object and the reference detector. We found that the resolution is limited by the wavelength...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB50
  • Yuasa, Kazuya
  • We discuss the derivation of Markovian master equation via Nakajima-Zwanzig's projection operator method, when there exists initial correlation between the system and the reservoir.

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB51
  • Eisaman, Matthew D; Goldschmidt, Elizabeth; Fan, Jingyun; Migdall, Alan
  • We test local realistic and non-local realistic theories using a fiber-based source of polarization-entangled photons. Our measurements violate local (certain non-local)...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB54
  • Amirloo, Jeyran; Razavi, Mohsen; Majedi, A Hamed
  • The fidelity and the rate of entanglement generation for the DLCZ entanglement-swapping protocol are evaluated. We find the distance beyond which DLCZ repeaters outperform single...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB55
  • Stefanak, Martin; Jex, Igor; Kiss, Tamas
  • We analyze the recurrence probabilities (Pólya numbers) of quantum walks. We show that one can achieve strikingly different recurrence behaviours for quantum walks by altering the...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB56
  • Souza, C E; Borges, C V; Khoury, A Z; Huguenin, J A; Aolita, L; Walborn, S P
  • We report a simple quantum key distribution experiment in which a shared reference frame is not necessary. Logical qubits are encoded into non-separable states of polarization and...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB57
  • Bahder, Thomas B; Sergienko, Alexander V; Simon, David S
  • We analyze the effect of frequency dispersion on the Shannon mutual information for high-resolution phase measurement with Mach-Zehnder interferometers, comparing input states of...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB58
  • Lastra, Freddy Antonio; Romero, Guillermo E; Lopez, Carlos E; Zagury, Nicim; Retamal, Juan C
  • We discuss the loss of entanglement under dissipation for a class of entangled coherent states of two modes of the electromagnetic field. Both asymptotic decays and finite...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB59
  • Pittman, Todd B; Hendrickson, Scott; Franson, Jim D
  • We describe a Parametric Down-Conversion source based on a low-power (< 1mW), narrowband (<1 MHz) fiber-coupled pump laser. The source is designed for two-photon absorption...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB60
  • Hayat, Alex; Ginzburg, Pavel; Orenstein, Meir
  • Direct characterization of photon energy-entanglement, full Bell-state analysis and energy-qubit detection are proposed, based on a coherent-control concept of two-photon absorption...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB61
  • Landau, Mayer A; Stroud Jr , Carlos R
  • We study wavepacket entanglement using generalized Schrödinger cat states of collections of oscillators with time dependent interactions. Entanglement is characterized as a function...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB62
  • Gerry, Christopher C; Benmoussa, Adil
  • We discuss the generation of two mode maxinally entangled coherent states using a weak nonlinear medium. We then discuss their applications to quantum metrology (Heisenberg-limited...

  • International Conference on Quantum Information (ICQI) 2008 paper: JMB64
  • Capraro, Ivan; Occhipinti, Tommaso; Bonora, Stefano; Villoresi, Paolo
  • Propagation through atmosphere is a major limitation in free space QKD implementations. Adaptive Optics can be a solution to this problem. This paper describes some results in this...
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