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

arXiv:1112.4594 · Nature

Atomic homodyne detection of continuous-variable entangled twin-atom states

C. Gross, Helmut Strobel, E. Nicklas, Tilman Zibold, Nir Bar‐Gill, Gershon Kurizki, Markus K Oberthaler

Published Nov 29, 2011• 216 citations
arXivHTMLPDF
DOI
10.1038/nature10654

Related papers

Interferometric measurement of a biphoton state with continuous-variables by homodyne detection

Yashuai Han, Daohua Wu, Katsuyuki Kasai +2 more

The Japan Society of Applied Physics•Jan 25, 2019•0 citations

Applications of Homodyne Detection Technique: Quantum Measurement of Continuous Variables

WORLD SCIENTIFIC eBooks•Jul 4, 2017•0 citations

Observation of two-photon interference with continuous variables by homodyne detection

Daohua Wu, Kota Kawamoto, Xiaomin Guo +3 more

The European Physical Journal D•Oct 1, 2017•4 citations

Quantum-state engineering assisted by entanglement

Matteo G. A. Paris, Mary M. Cola, Rodolfo Bonifacio

We suggest a general scheme for continuous variable quantum-state engineering based on conditional measurements carried out on entangled twin beam of radiation. Realistic detection schemes such as on/off photodetection, homodyne detection, and joint measurement of two-mode quadratures are analyzed in detail. Imperfections of the apparatuses, such as nonunit quantum efficiency and finite resolution, are taken into account. We show that conditional on/off photodetection provides a reliable scheme to verify nonclassicality, whereas conditional homodyning represents a tunable and robust source of squeezed light. We also describe optical continuous variable teleportation as a conditional measurement, and evaluate the degrading effects of finite amount of entanglement, decoherence due to losses, and nonunit quantum efficiency.

arXiv:quant-ph/0211127•Physical Review A•Apr 10, 2003•38 citations

Homodyne measurements and detection of continuous variable entanglement with mesoscopic numbers of bosons

Andrew J. Ferris, M. K. Olsen, Eric G. Cavalcanti +1 more

•Jun 19, 2008•0 citations

Non-Gaussian entanglement criteria for atomic homodyne detection

Jaehak Lee, Jiyong Park, Jaewan Kim +2 more

Homodyne measurement is a crucial tool widely used to address continuous variables for bosonic quantum systems. While an ideal homodyne detection provides a powerful analysis, e.g., to effectively measure quadrature amplitudes of light in quantum optics, it relies on the use of a strong reference field, the so-called local oscillator, typically in a coherent state. Such a strong coherent local oscillator may not be readily available, particularly for a massive quantum system like a Bose-Einstein condensate, posing a substantial challenge in dealing with continuous variables appropriately. It is necessary to establish a practical framework that includes the effects of nonideal local oscillators for a rigorous assessment of various quantum tests and applications. We here develop entanglement criteria beyond a Gaussian regime applicable for this realistic homodyne measurement that do not require assumptions on the state of local oscillators. We discuss the working conditions of homodyne detection to effectively detect non-Gaussian quantum entanglement under various states of local oscillators.

arXiv:2401.01228•Physical Review A•Feb 14, 2023•1 citation
We suggest a general scheme for continuous variable quantum-state engineering based on conditional measurements carried out on entangled twin beam of radiation. Realistic detection schemes such as on/off photodetection, homodyne detection, and joint measurement of two-mode quadratures are analyzed in detail. Imperfections of the apparatuses, such as nonunit quantum efficiency and finite resolution, are taken into account. We show that conditional on/off photodetection provides a reliable scheme to verify nonclassicality, whereas conditional homodyning represents a tunable and robust source of squeezed light. We also describe optical continuous variable teleportation as a conditional measurement, and evaluate the degrading effects of finite amount of entanglement, decoherence due to losses, and nonunit quantum efficiency.
Homodyne measurement is a crucial tool widely used to address continuous variables for bosonic quantum systems. While an ideal homodyne detection provides a powerful analysis, e.g., to effectively measure quadrature amplitudes of light in quantum optics, it relies on the use of a strong reference field, the so-called local oscillator, typically in a coherent state. Such a strong coherent local oscillator may not be readily available, particularly for a massive quantum system like a Bose-Einstein condensate, posing a substantial challenge in dealing with continuous variables appropriately. It is necessary to establish a practical framework that includes the effects of nonideal local oscillators for a rigorous assessment of various quantum tests and applications. We here develop entanglement criteria beyond a Gaussian regime applicable for this realistic homodyne measurement that do not require assumptions on the state of local oscillators. We discuss the working conditions of homodyne detection to effectively detect non-Gaussian quantum entanglement under various states of local oscillators.