Will quantum computers revolutionize the future? (Illustration photo)
Will quantum computers revolutionize the future? (Illustration photo) (GETTY IMAGES / SCIENCE PHOTO LIBRA)

Today, we are interested in a complex but promising subject: quantum computing. With a very advanced French startup in this field, which has just successfully raised funds to one day develop a French quantum computer.

franceinfo: first of all, why is your company called Alice & Bob?


Théau Peronnin, co-founder of Alice & Bob : It is a reference to a physicist joke. In physics exercises, we often talk about a point A and a point B and to personify them, physicists are used to naming points Alice and Bob. It has been used a lot in quantum cryptography.

What do you hope to bring to this computing of the future?

There are prototypes of quantum computers, like those that put Google and IBM online. We are working to move from the demonstrator stage to that of quantum computers that really meet industrial needs and that will be used to design the materials or drugs of tomorrow.


You have just raised 3 million euros and with your co-founder, you embody French excellence through your training at Normale Sup and Polytechnique, but is that enough to fight against the American giants?

It’s not a struggle. I believe that what is quite unique at Alice & Bob is above all to be extremely well supported. We are associated with all the French academic players in the field, such as Inria, Mines ParisTech, ENS Paris Lyon, CEA, etc.

Together, we are setting up a quantum flagship which will explore a more elegant technological solution and which, potentially, would allow us to build much more efficient machines, because they will meet the main challenge of the quantum computer. which is the fight against decoherence.


In two words, decoherence is the fact that the superposition of states is disturbed, it is very sensitive to noise and disturbances. So, to succeed in building a quantum machine is to manage to build a machine which is perfectly isolated from noise and the loss of information, to be more quantum correct.