Qubi can record the operations you do and send them to a real quantum computer.
What is a quantum circuit?
A quantum circuit is how we program a quantum computer. It contains the instructions for every operation we want to perform on the computer's qubits, sequenced from left to right like a musical score.
Each of these boxes and lines has a representation on Qubi. Let's dig into them below.
Each wire is one qubit
A horizontal line represents a single physical qubit. As long as the line stays flat, nothing is happening to it, it's holding its state steady until you apply a gate or connect it to another qubit.
The three operations
Every quantum circuit is built from three building blocks. On Qubi, each one is a physical gesture, and each gesture maps to a symbol in the circuit.
Gates are twists on Qubi
Watch as the dot and colors rotate around the sphere. That's all a gate does!
For example, the X gate is just a 180° rotation around the X axis.
Entanglements are bumps between two Qubis
Bump two Qubis together to entangle them. You can change which kind of entanglement a bump performs, but that's for advanced users.
Measurements are shakes on Qubi
Every quantum program ends with a measurement. In the lab that's a detector; with Qubi it's a quick shake. If your executor is a real quantum computer, this will trigger a job!
For a deeper walk-through of each gesture, see the Qubi gestures guide.
Four steps to run on real quantum computers
Connect and choose an executor
Make sure your Qubis are connected to the Qubi App and choose an executor from the list of available quantum backends.
Build the circuit by playing
As you perform gates on the Qubis, the Qubi App captures every operation and builds a quantum circuit in real time.
Shake to ship
Shake the Qubi to send your circuit to a real quantum computer. The quantum computer will execute your circuit using lasers, magnets, and dilution fridges!
Read the results
When you take a measurement, the Qubi App ships the stored circuit to your selected executor through the cloud. Once the run completes, you receive a report and a swipeable story revealing how the quantum computer executed your circuit.
Go deeper
The science behind Qubi
For the full technical story of how Qubi maps to real quantum hardware, read the whitepaper.