Zobrazeno 1 - 10
of 728
pro vyhledávání: '"Grace, Michael"'
We consider an imaging system tasked with estimating the angular distance between two incoherently-emitting sub-Rayleigh-separated point sources, without any prior knowledge of the centroid or the constellation and with a fixed collected-photon budge
Externí odkaz:
http://arxiv.org/abs/2409.04323
Detecting if and when objects change is difficult in passive sub-diffraction imaging of dynamic scenes. We consider the best possible tradeoff between responsivity and accuracy for detecting a change from one arbitrary object model to another in the
Externí odkaz:
http://arxiv.org/abs/2308.07262
Publikováno v:
Phys. Rev. Research 6, 013212 (2024)
Distributed aperture telescopes are a well-established approach for boosting resolution in astronomical imaging. However, theoretical limits on quantitative imaging precision, and the fundamentally best possible beam-combining and detection schemes t
Externí odkaz:
http://arxiv.org/abs/2305.03848
Autor:
Nelli, Filippo, Ge, Zongyuan, Blackall, Linda, Taheriashtiani, Negar, Henry, Rebekah, Brumley, Douglas R., Grace, Michael, Jex, Aaron, Burch, Michael, Lin, Tsair-Fuh, Bertelkamp, Cheryl, Willis, Anusuya, Gao, Li, Schmidt, Jonathan, Crosbie, Nicholas D., Zamyadi, Arash
Publikováno v:
In Computational and Structural Biotechnology Reports December 2024 1
Autor:
Jagannathan, Arunkumar, Brasher, Olivia, Grace, Michael, Shapiro, Jeffrey H., Guha, Saikat, Habif, Jonathan L.
We demonstrate an optical receiver that achieves the quantum Chernoff bound for discriminating coherent states from thermal states in the multi-copy scenario. In contrast, we find that repeated use of the receiver approaching the Helstrom bound for s
Externí odkaz:
http://arxiv.org/abs/2111.14890
Autor:
Grace, Michael R, Guha, Saikat
Publikováno v:
Phys. Rev. Lett. 129, 180502, 2022
We consider passive imaging tasks involving discrimination between known candidate objects and investigate the best possible accuracy with which the correct object can be identified. We analytically compute quantum-limited error bounds for hypothesis
Externí odkaz:
http://arxiv.org/abs/2107.00673
Autor:
Grace, Michael R, Guha, Saikat
Publikováno v:
2022 IEEE Information Theory Workshop (ITW), Mumbai, India, 2022, pp. 500-505
We report lowest-order series expansions for primary matrix functions of quantum states based on a perturbation theory for functions of linear operators. Our theory enables efficient computation of functions of perturbed quantum states that assume on
Externí odkaz:
http://arxiv.org/abs/2106.05533
Publikováno v:
Phys. Rev. A 104, 022410 (2021)
We investigate our ability to determine the mean position, or centroid, of a linear array of equally-bright incoherent point sources of light, whose continuum limit is the problem of estimating the center of a uniformly-radiating object. We consider
Externí odkaz:
http://arxiv.org/abs/2102.02228
Publikováno v:
Phys. Rev. Research 3, 033114 (2021)
Quantum-enhanced sensing promises to improve the performance of sensing tasks using non-classical probes and measurements that require far fewer scene-modulated photons than the best classical schemes, thereby granting previously-inaccessible informa
Externí odkaz:
http://arxiv.org/abs/2004.04152
Publikováno v:
Phys. Rev. Applied 14, 034065 (2020)
We analyze a fiber-optic gyroscope design enhanced by the injection of quantum-optical squeezed vacuum into a fiber-based Sagnac interferometer. In the presence of fiber loss, we compute the maximum attainable enhancement over a classical, laser-driv
Externí odkaz:
http://arxiv.org/abs/2003.12545