From 9e10d74c9298961fc5151e341eb3aa1b00f5ca37 Mon Sep 17 00:00:00 2001
From: Xavier Waintal <xavier.waintal@cea.fr>
Date: Mon, 9 Sep 2013 10:50:16 +0200
Subject: [PATCH] updated index

---
 content/index.txt | 27 ++++++++++++++++++---------
 1 file changed, 18 insertions(+), 9 deletions(-)

diff --git a/content/index.txt b/content/index.txt
index fa58460..099c63c 100644
--- a/content/index.txt
+++ b/content/index.txt
@@ -5,18 +5,27 @@ Kwant is a Python package for numerical calculations on tight-binding models
 with a strong focus on quantum transport.  It is designed to be flexible, easy to
 use, while not sacrificing performance.
 
-Its flexibility is illustrated below by showcasing some of its applications. How
-easy it is to use is shown in the `tutorial </docs/tutorial/>`_, and finally its
-performance was carefully tested.
+Tight-binding models are ubiquitous in quantum physics and they can be found in a vast variety of
+situations including graphene, quantum Hall effect, topological insulators, superconductivity, semi-conductors,
+spintronics, molecular electronics, any combination of the above and many other cases. 
+While all these systems have very distinct physics, their mathematical description is very close. 
+Kwant has been designed so that their computer implementation be also very close: changing a few lines of code is all that is needed to go from one example to another.  
+
+Kwant does not use the traditional ‘input' files often found in scientific softwares. Instead, one write small python
+programs (benefiting from python simple and very powerful syntax) to "make" the sample and "measure" its quantum properties
+(conductance, density of states, etc). Learning to use Kwant is very fast, no more than a couple of hours to get started.
+How easy it is to use in practice is shown in the `tutorial </docs/tutorial/>`_ or in Kwant main 'article </paper>‘_.
+
+The few examples shown in the image below illustrate a few recent applications:
+
+* conductance of a Corbino disk in a quantum Hall regime (upper left)
+* A piece of bilayer graphene lattice (lower left)
+* Density of states in a chaotic stadium billiard (middle)
+* A quantum wire (gray) attached to a superconducting electrode (blue) give rise to a Majorana bound states
+  which can be seen in the spectrum of the device (upper and lower right).
 
 .. image:: collage.png
    :scale: 30%
    :target: collage.png
 
-Image: various applications of kwant:
 
-* conductance of a Corbino disk in a quantum Hall regime
-* A piece of bilayer graphene lattice
-* Density of states in a chaotic stadium billiard
-* A quantum wire with a proximity superconductor, and the Majorana states
-  in its spectrum.
-- 
GitLab