Quantum Computing
Schrödinger's Laptop?
Eating Couscous
Bungee Jumping
That's Impossible
Quantum Computers
Superposition
Many theoretical states at once.
instead of using a normal
Bits
we use
Qubits
What are Qubits?
it's a photon used as an information unit.
In a classical system, a bit would have to be in one state or the other, but quantum mechanics allows the qubit to be in a superposition of both states at the same time, a property which is fundamental to quantum computing.
The "normal" bit
1
0
a Qubit
Could be in 3 possible states
1 or 0 or BOTH !
The Both state can be modelized as such:
Huge difference
if 1 qubit can give us 2 possibilities
2 qubits would give us 4 possibilities
and 3 give 8 possibilities
.
.
.
.
N qubits give 2 N possibilities!
Drawback
As soon as someone tries to look into the qubit it becomes unreadable
Cool security feature though
Quanfidential!
What about the people actually allowed to see those infos?
Solution
Indirect Observation
Useful Application
In 2010, they broke the encryption and it took them 3 years to do that as for a quantum computer it would take
MINUTES!
Useful Applications
- Physical modelling (climate, economics, engineering ..)
- Simulations (chemistry, materials ..)
- Databases search (bioinformatics ..)