ORCID Profile
0000-0002-4759-0939
Current Organisation
LPENS
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Publisher: Springer Science and Business Media LLC
Date: 09-2009
DOI: 10.1038/NATURE08325
Abstract: The bandwidth and versatility of optical devices have revolutionized information technology systems and communication networks. Precise and arbitrary control of an optical field that preserves optical coherence is an important requisite for many proposed photonic technologies. For quantum information applications, a device that allows storage and on-demand retrieval of arbitrary quantum states of light would form an ideal quantum optical memory. Recently, significant progress has been made in implementing atomic quantum memories using electromagnetically induced transparency, photon echo spectroscopy, off-resonance Raman spectroscopy and other atom-light interaction processes. Single-photon and bright-optical-field storage with quantum states have both been successfully demonstrated. Here we present a coherent optical memory based on photon echoes induced through controlled reversible inhomogeneous broadening. Our scheme allows storage of multiple pulses of light within a chosen frequency bandwidth, and stored pulses can be recalled in arbitrary order with any chosen delay between each recalled pulse. Furthermore, pulses can be time-compressed, time-stretched or split into multiple smaller pulses and recalled in several pieces at chosen times. Although our experimental results are so far limited to classical light pulses, our technique should enable the construction of an optical random-access memory for time-bin quantum information, and have potential applications in quantum information processing.
Publisher: IOP Publishing
Date: 20-12-2006
Publisher: American Physical Society (APS)
Date: 02-11-2006
Publisher: American Physical Society (APS)
Date: 13-11-2008
Publisher: American Physical Society (APS)
Date: 16-01-2008
Publisher: SPIE
Date: 13-09-2007
DOI: 10.1117/12.735471
Publisher: American Physical Society (APS)
Date: 03-11-2006
Publisher: The Optical Society
Date: 06-05-2008
DOI: 10.1364/OE.16.007369
Abstract: We demonstrate experimentally the delay of squeezed light and entanglement using Electromagnetically Induced Transparency (EIT) in a rubidium vapour cell. We perform quadrature litude measurements of the probe field and find no appreciable excess noise from the EIT process. From input squeezing of 3.2+/-0.5 dB at low sideband frequencies, we observed the survival of 2.0+/-0.5 dB of squeezing at the EIT output. By splitting the squeezed light on a beam-splitter, we generated biased entanglement between two beams. We transmit one of the entangled beams through the EIT cell and correlate the quantum statistics of this beam with its entangled counterpart. We experimentally observed a 2.2+/-0.5 micros delay of the biased entanglement and obtained a preserved degree of wavefunction inseparability of 0.71+/-0.01, below the unity value for separable states.
Publisher: American Physical Society (APS)
Date: 18-01-2008
Publisher: American Physical Society (APS)
Date: 07-02-2006
Publisher: American Physical Society (APS)
Date: 29-10-2010
Publisher: American Physical Society (APS)
Date: 30-09-2008
Publisher: AIP
Date: 2011
DOI: 10.1063/1.3630216
Publisher: IEEE
Date: 06-2007
No related grants have been discovered for Gabriel Hétet.