11月8日 英国Warwick大学Animesh Datta教授学术报告：Quantum limits of sensing and imaging

报告题目：Quantum limits of sensing and imaging  

报告时间：11月8日上午10:00  

报告地点：唐仲英楼A213  

报告摘要：   

Of the several quantum technological applications being pursued, quantum-enhanced sensing and imaging is a prominent one. This is driven by its much-anticipated applicability in fields such as sensor design, microscopy, spectroscopy, and imaging, as well as the belief that the requirements for a quantum-enhanced sensor are less demanding that those for a universal quantum computer or simulator. The latter is based on numerous studies over the years [1], but almost entirely concerned with the problem of estimating a single-phase parameter. Going beyond these, we present some of our recent results on the quantum limits of estimating multiple parameters simultaneously, including the fundamental limitation for Gaussian states in simultaneous multiple phase estimation [2], and the design of quantum probe states that can estimate all non-commuting components of a multidimensional field simultaneously at the quantum limit [3]. Since most technological sensing applications involve multiple parameters, this understanding is vital.  

References   

[1] R. Demkowicz-Dobrzanski et al., Progress in Optics 345-435 (2015).  

[2] C. N. Gagatsos, D. Branford, A. Datta, Phys. Rev. A 94, 42342 (2016).  

[3] T. Baumgratz, A. Datta, Phys. Rev. Lett. 116, 30801 (2016).  

个人简介：   

Prof. Animesh Datta received his PhD in Physics in 2008 from the University of New Mexico, supervised by Prof. Carl Caves, after which he held a postdoctoral position at Imperial Collge London. He next held a postdoctoral position at the University of Oxford, where he led his own research group from 2014. Since 2015, he has been an Assistant Professor in Theoretical Physics at University of Warwick and lead the quantum information science group. He also hold an EPSRC Early Career Fellowship.