Uttam Singh

6 Questions 6 Answers 0 Followers

Questions related from Uttam Singh

What are the known results on majorization and trumping of infinite dimensional probability vectors?

Hello there! I am collecting results on the majorization and trumping of infinite dimensional probability vectors. Here is a list of papers (in context of quantum information): (1)...

04 June 2016 8,299 0 View

Does the monotonicity of a few entanglement measures under a fixed CPTP map implies monotonicity of other entanglement measures under the same map?

I have a fixed channel (CPTP map) and I do not know whether it is inside the class of LOCC. I know explicitly that entanglement of formation, relative entropy of entanglement and negativity...

19 November 2014 207 3 View

Can anyone suggest a way to measure the square root of a number operator in the laboratory?

The square root of a number operator is Hermitian and therefore in principle, it should be possible to measure it in a laboratory. Also, the number operator itself, say for photons, can be...

08 May 2014 838 2 View

Is 0.5 ebits of entangement for some pure quantum state same as 0.5 ebits of entanglement of formation for some mixed quantum state?

The state, say

15 November 2013 1,114 0 View

Post-selection: what is it good for and when can it lead to something interesting?

It has been seen a long ago (http://prl.aps.org/abstract/PRL/v60/i14/p1351_1) that in a pre and post-selected ensemble, the measurement of some observable on the considered system yields exotic...

30 October 2013 3,168 3 View

How to describe correlations in a bipartite quantum system which is both pre- and post-selected?

Suppose we have a bipartite quantum system which is preapared in some state, say, at t = 0 (preselection) and postselected at a later time, say, t = T. The correlations between two parts of the...

25 October 2013 3,227 1 View