317 research outputs found
Hay Quality Sensory Evaluation Form - Cereal
Hay Quality Sensory Evaluation Form – Cerea
Hay Quality Sensory Evaluation Form - Mixed Cereal/Pea or Vetch
Hay Quality Sensory Evaluation Form – Mixed Cereal/Pea or Vetc
Hay Quality Sensory Evaluation Form - Timothy; Export & Horse
Hay Quality Sensory Evaluation Form – Timothy; Export & Hors
Single Photons on Pseudo-Demand from Stored Parametric Down-Conversion
We describe the results of a parametric down-conversion experiment in which
the detection of one photon of a pair causes the other photon to be switched
into a storage loop. The stored photon can then be switched out of the loop at
a later time chosen by the user, providing a single photon for potential use in
a variety of quantum information processing applications. Although the stored
single photon is only available at periodic time intervals, those times can be
chosen to match the cycle time of a quantum computer by using pulsed
down-conversion. The potential use of the storage loop as a photonic quantum
memory device is also discussed.Comment: 8 pages, 7 Figs., RevTe
Practical Quantum Bit Commitment Protocol
A quantum protocol for bit commitment the security of which is based on
technological limitations on nondemolition measurements and long-term quantum
memory is presented.Comment: Quantum Inf. Process. (2011
All-Optical Switching Demonstration using Two-Photon Absorption and the Classical Zeno Effect
Low-contrast all-optical Zeno switching has been demonstrated in a silicon
nitride microdisk resonator coupled to a hot atomic vapor. The device is based
on the suppression of the field build-up within a microcavity due to
non-degenerate two-photon absorption. This experiment used one beam in a
resonator and one in free-space due to limitations related to device physics.
These results suggest that a similar scheme with both beams resonant in the
cavity would correspond to input power levels near 20 nW.Comment: 4 pages, 5 figure
Beam Splitter for Spin Waves in Quantum Spin Network
We theoretically design and analytically study a controllable beam splitter
for the spin wave propagating in a star-shaped (e.g., a -shaped beam) spin
network. Such a solid state beam splitter can display quantum interference and
quantum entanglement by the well-aimed controls of interaction on nodes. It
will enable an elementary interferometric device for scalable quantum
information processing based on the solid system.Comment: 5 pages, 4 figures, derivation of formulae change
Experimental storage of photonic polarization entanglement in a broadband loop-based quantum memory
We describe an experiment in which one member of a polarization-entangled
photon pair is stored in an active "loop and switch" type quantum memory
device, while the other propagates through a passive optical delay line. A
comparison of Bell's inequality tests performed before and after the storage is
used to investigate the ability of the memory to maintain entanglement, and
demonstrate a rudimentary entanglement distribution protocol. The entangled
photons are produced by a conventional Spontaneous Parametric Down Conversion
source with center wavelengths at 780 nm and bandwidths of 10 THz, while
the memory has an even wider operational bandwidth that is enabled by the
weakly dispersive nature of the Pockels effect used for
polarization-insensitive switching in the loop-based quantum memory platform.Comment: 6 pages, 4 figure
Hay Quality Sensory Evaluation Form - Grass
Hay Quality Sensory Evaluation Form – Gras
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