It's a very good question. The answer is, yes, the government should be concerned.
When we have the quantum computer, the algorithms we are using for cryptography today will all be broken. We should all remind ourselves that what we are transmitting around the world today through the Internet will be broken once we have a quantum computer.
Fortunately—and it's not because I want my colleagues to slow down on their goal of building a quantum computer—I do not believe that this will happen until at least 10 to 20 years from now.
The federal government should think about moving from the algorithms they are using right now to new algorithms that are quantum-resistant. There are efforts to go in this direction at both CSEC and CSIS, and in the U.S., at the National Institute of Standards and Technology.