Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Bulletin of the American Physical Society

Certified quantum non-demolition measurement of atomic spins

R. J. Sewell, M. Napolitano, N. Behbood, Giorgio Colangelo, Ferran Martin Ciurana, Morgan W. Mitchell

Published Jun 4, 2014• 0 citations
OpenAlex

Related papers

Certified quantum non-demolition measurement of a macroscopic material system

R. J. Sewell, M. Napolitano, N. Behbood +2 more

arXiv:1303.2490•Nature Photonics•May 10, 2013•56 citations

Quantum non-demolition measurement of an electron spin qubit

Takashi Nakajima, Akito Noiri, Jun Yoneda +11 more

arXiv:1904.11220•Nature Nanotechnology•Apr 15, 2019•75 citations

Quantum non-demolition measurement of an electron spin qubit

Jun Yoneda

Bulletin of the American Physical Society•Mar 5, 2020•0 citations

Certified quantum non-demolition measurement of atomic spins

R. J. Sewell, M. Napolitano, N. Behbood +3 more

We report certified quantum non-demolition measurement of atomic spins using criteria developed for continuous variable experiments in optics. We observe quantum state preparation and information–damage trade–off beyond classical limits by seven and twelve standard deviations.

•Jan 1, 2014•0 citations

Certified quantum non-demolition measurement of material systems

Morgan W. Mitchell, Marco Koschorreck, Marcin Kubasik +2 more

An extensive debate on quantum non-demolition (QND) measurement, reviewed in Grangier et al (1998 Nature 396 537), finds that true QND measurements must have both non-classical state-preparation capability and non-classical information-damage tradeoff. Existing figures of merit for these non-classicality criteria require direct measurement of the signal variable and are thus difficult to apply to optically-probed material systems. Here we describe a method to demonstrate both criteria without need for to direct signal measurements. Using a covariance matrix formalism and a general noise model, we compute meter observables for QND measurement triples, which suffice to compute all QND figures of merit. The result will allow certified QND measurement of atomic spin ensembles using existing techniques.

arXiv:1203.6584•New Journal of Physics•Aug 24, 2012•12 citations

Fast polarimetry system for the application to spin quantum non-demolition measurement

Takeuchi, M, Ichihara, S, Kumakura, M +4 more

We report the development of a fast pulse polarimeter for the application to quantum non-demolition measurement of atomic spin (Spin QND). The developed system was tunable to the atomic resonance of ytterbium atom and has narrow laser linewidth suitable for spin QND. Using the developed polarimeter, we successfully demonstrated the measurement of the vacuum noise, with 10^6 to 10^7 photon number per pulse.

•Dec 12, 2005•7 citations
An extensive debate on quantum non-demolition (QND) measurement, reviewed in Grangier et al (1998 Nature 396 537), finds that true QND measurements must have both non-classical state-preparation capability and non-classical information-damage tradeoff. Existing figures of merit for these non-classicality criteria require direct measurement of the signal variable and are thus difficult to apply to optically-probed material systems. Here we describe a method to demonstrate both criteria without need for to direct signal measurements. Using a covariance matrix formalism and a general noise model, we compute meter observables for QND measurement triples, which suffice to compute all QND figures of merit. The result will allow certified QND measurement of atomic spin ensembles using existing techniques.