Mon·Feb 22, 2016Monday·February 22, 2016

1. 01*

   Polarization-transfer measurement to a large-virtuality bound proton in the deuteron

   A1 Collaboration: I. Yaron (1) · D. Izraeli (1) · P. Achenbach (2) · H. Arenhövel (2) · J. Beričič(3) · R. Böhm (2) · D. Bosnar (4) · L. Debenjak (3) · M. O. Distler (2) · A. Esser (2) · I. Friščić (4) · R. Gilman (5) and 18 other authors

   Possible differences between free and bound protons may be observed in the ratio of polarization-transfer components, $P_x^{\prime }/P_z^{\prime }$. We report the measurement of $P_x^{\prime }/P_z^{\prime }$, in the ${}^2\text{H}(\vec{e},e^{\prime }\vec{p})n$ reaction at low and high missing momenta. Observed increasing deviation of $P_x^{\prime }/P_z^{\prime }$ from that of a free proton as a function of the virtuality, similar to that observed in \hefour, indicates that the effect in nuclei is due to the virtuality of the knock-out proton and not due to the average nuclear density. The measured differences from calculations assuming free-proton form factors ($\sim 10\%$), may indicate in-medium modifications.

   nucl-exPLB(2017)·16 citations
2. 02*

   Decoherence Free Neutron Interferometry

   Dmitry A. Pushin · Muhammad Arif · David G. Cory🇨🇦

   Perfect single-crystal neutron interferometers are adversely sensitive to environmental disturbances, particularly mechanical vibrations. The sensitivity to vibrations results from the slow velocity of thermal neutrons and the long measurement time that are encountered in a typical experiment. Consequently, to achieve a good interference solutions for reducing vibration other than those normally used in optical experiments must be explored. Here we introduce a geometry for a neutron interferometer that is less sensitive to low-frequency vibrations. This design may be compared with both dynamical decoupling methods and decoherence-free subspaces that are described in quantum information processing. By removing the need for bulky vibration isolation setups, this design will make it easier to adopt neutron interferometry to a wide range of applications and increase its sensitivity.

   ↳ quant-phnucl-exphysics.opticsPRA(2009)·17 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.