| Quantum-optical process tomography using coherent states University of Calgary | Presentation | 2010-07-19 | M. Lobino, D. Korystov, C. Kupchak, E. Figueroa, R. Kumar, E. Barrios, S. Rahimi-Keshari, A. Scherer, B. C. Sanders, A. Lvovsky |
| Propagation of squeezed vacuum under electromagnetically induced transparency University of Calgary | Publication | 2009-01-01 | E. Figueroa, M. Lobino, D. Korystov, J. Appel, A. I. Lvovsky |
| Quantum Memory for Squeezed Light University of Calgary | Publication | 2008-03-01 | J. Appel, E. Figueroa, D. Korystov, M. Lobino, A. Lvovsky |
| Electromagnetically-induced transparency and squeezed light University of Calgary | Presentation | 2008-08-20 | E. Figueroa, J. Appel, D. Korystov, M. Lobino, C. Kupchak, A. Lvovsky |
| A continuous-variable approach to process tomographyWe propose and demonstrate experimentally a technique for estimating quantum-optical processes in the continuous-variable domain. The process data is determined by applying the process to a set of coherent states and measuring the output. The process output for an arbitrary input state can then be obtained from its Glauber-Sudarshan expansion. Although such expansion is generally singular, it can be arbitrarily well approximated with a regular function. University of Calgary | Presentation | 2008-08-26 | M. Lobino, E. Figueroa, D. Korystov, C. Kupchak, B. C. Sanders, A. Lvovsky |
| Interfacing quantum light with atoms using electromagnetically-induced transparency University of Calgary | Presentation | 2008-08-12 | E. Figueroa, J. Appel, D. Korystov, M. Lobino, A. Lvovsky |
| Electromagnetically-induced transparency and squeezed lightWe study electromagnetically-induced transparency (EIT) as a tool for slowing down and storing squeezed light. The experiments are conducted in rubidium vapour, and the squeezed vacuum state is prepared by means of an optical parametric amplifier. Full homodyne tomography of the squeezed vacuum pulse before and after the interaction with the EIT cell provides insight into the phenomena that degrade the storage fidelity.
University of Calgary | Presentation | 2007-08-22 | J. Appel, E. Figueroa, D. Korystov, A. Lvovsky |
| Quantum memory for squeezed light University of Calgary | Publication | 2008-03-01 | J. Appel, E. Figueroa, D. Korystov, M. Lobino |
| Towards storage of squeezed light by electromagnetically induced transparencyElectromagnetically induced transparency (EIT) is a quantum interference effect, in which a strong control laser beam changes a medium's linear dispersion and absorption in such a way that a weak signal beam travels without absorption and its group velocity is greatly reduced. Theoretical models and recent experiments predict that adiabatic switching of the control field while the signal is inside the medium reversibly maps the signal quantum state to the states of the irradiated atoms. We report on our recent progress in storing and retrieving a squeezed optical state by adiabatic conversion to a collective coherent superposition of the hyperfine ground levels of the D1 transition in rubidium-87. A bright narrowband source of nonclassical light for interaction with atoms has been constructed based on an optical parametric amplifier featuring a periodically poled KTP crystal. Ultrafast lossless switching allows us to generate 1 $\mu$s pulses of up to 3 dB squeezed vacuum resonant to the EIT transparency window. We investigate the transmission and storage of these states under EIT conditions by homodyne tomography.
University of Calgary | Presentation | 2007-06-09 | J. Appel, E. Figueroa, F. Vewinger, D. Korystov, G. Günter, A. Lvovsky |
| Electromagnetically-induced transparency for quantum optical information processingWe report storage and retrieval of pulsed squeezed vacuum in rubidium vapor using electromagnetically-induced transparency. For the first time, complete tomographic characterization of the quantum state after the storage procedure has been performed, making our setup a universal test bed for a generic quantum optical memory system.
University of Calgary | Presentation | 2008-06-30 | A. Lvovsky, J. Appel, E. Figueroa, D. Korystov, M. Lobino |
| Quantum memory for squeezed lightWe study electromagnetically-induced transparency (EIT) as a tool for slowing down and storing squeezed light. The experiments are conducted in rubidium vapour, and the squeezed vacuum state is prepared by means of an optical parametric amplifier. Full homodyne tomography of the squeezed vacuum pulse before and after the interaction with the EIT cell provides insight into the phenomena that degrade the storage fidelity. University of Calgary | Presentation | 2008-07-03 | A. Lvovsky, J. Appel, E. Figueroa, D. Korystov, M. Lobino |
| Electromagnetically induced transparency and squeezed light University of Calgary | Presentation | 2008-05-22 | M. Lobino, J. Appel, E. Figueroa, D. Korystov, A. Lvovsky |
| Towards storage of non-classical light using electromagnetically induced transparencyElectromagnetically induced transparency (EIT) is a quantum interference effect in which a strong control laser beam changes a medium's linear dispersion and absorption allowing a weak signal beam to travel without absorption and with its group velocity greatly reduced. This allows the storage of quantum information on the irradiated atoms. We report on our recent progress in storing and retrieving a squeezed optical state using hyperfine ground levels of the D1 transition in rubidium-87. A narrowband source of nonclassical light for interaction with atoms has been constructed based on parametric amplification featuring a periodically poled KTP crystal. Ultrafast lossless switching allows us to generate 1 us pulses of up to 3 dB squeezed vacuum resonant to the EIT transparency window. We investigate the transmission and storage of these states under EIT conditions by homodyne tomography. University of Calgary | Presentation | 2007-08-11 | E. Figueroa, J. Appel, F. Vewinger, D. Korystov, G. Günter, A. Lvovsky |
| Electromagnetically-induced transparency and squeezed light University of Calgary | Publication | 2009-01-01 | E. Figueroa, J. Appel, C. Kupchak, M. Lobino, D. Korystov, A. Lvovsky |
| Electromagnetically-induced transparency and squeezed light University of Calgary | Publication | 2009-05-01 | E. Figueroa, J. Appel, C. Kupchak, M. Lobino, D. Korystov |
