What is a Qubit?

Qubit is short for “quantum bit.” It is the fundamental unit of information in quantum computing. Unlike classical bits, which can be either 0 or 1, qubits can exist in multiple states simultaneously (superposition). Superposition is a mathematical combination of both 0 and 1. Quantum algorithms can use a group of qubits in a superposition to shortcut through calculations.

Here are just some of the qubit types out there:

• Superconducting: One of the most popular types of quantum computers is a superconducting qubit quantum computer. This is what we develop here at OQC.  In addition to having faster gate speeds, superconducting qubits are solid-state fabrications. Superconducting qubits are also the most mature of all the qubit technologies.
• Trapped Ions: uses atoms or molecules with a net electrical charge known as “ions” that are trapped and manipulated using electric and magnetic fields to store and process quantum information. 
• Photonic: these types of quantum computers use photons (particles of light) to carry and process quantum information.  Photonic qubits are potentially an alternative to trapped ions and neutral atoms.