This is referred to as quantum non-locality. Instantly and *any* distance, which is what Einstein referred to as 'Spooky action at a distance,' since this appeared to violate various rules like transmitting information faster than the speed of light.

Take take that both of those words are fully intended. When entangled with eachother, a change in one of the entangled qubits will change the other instanty.

Entanglement - This is where one qubit's state is linked to another.

Once observed, it will collapse into one of the possible states.

Superposition - this is where a qubit is, while left unobserved, all of its possible states.

Qubits also have 2 other very important properties: What this means for us as computer scientists is that a qubit can be a 0, 1, or both. Through advances in technology over the years, we have bits that are nearly the size of atoms, which is absolutely incredible.Ī quantum bit is a 2-state quantum 'device.' Many things can be used as qubits, such as a photon's horizontal and vertical polarization, or the spin up or spin down of an electron. What's a qubit?Ī regular bit is a transistor that registers either a high or low voltage, which corresponds to 1 or 0 respectively. Quantum computers are machines that work with qubits (quantum bits) rather than regular bits.

That said, some basic foundation is required, so: What are quantum computers? I am going to focus mainly on the programming and application side of things here. I will still outline some basics, but I highly encourage you to dive into the theory and conceptual side of quantum physics on your own because I really am not the best person to educate there. Dare I suggest too, no one is a quantum physics expert, but there are people far more qualified than me to talk on the theories and physics side of things. The subject matter of quantum physics in general is very advanced, complex, confusing, and complicated. There's no shortage of hype around quantum computing on the internet, but I am going to still outline the propositions made by quantum computing in general, as well as how this pertains to us and programmers who intend to work with quantum computers, which we will be doing immediately in this series.

Welcome to a series on programming quantum computers.

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