qubit means A quantum bit; the basic unit of quantum information described by a superposition of two states; a quantum bit in a quantum computer capable of being in a state of superposition; A binary qudit. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
qubit is pronounced /ˈkjuːbɪt/.
Why “qubit” is a great word
The fundamental unit of quantum information, existing not as a definitive 0 or 1 but as a probabilistic superposition of both states simultaneously. Coined in 1995 by physicist Benjamin Schumacher, its name is a portmanteau of 'quantum' (from Latin 'quantus', 'how much') and 'bit' (binary digit), a play on the word 'cubit' (a historical unit of length). Unlike a classical bit, a stark and solitary switch, or a cubit, a fixed length of bone and sinew, the qubit is a spectrum of potential, a simultaneous whisper of yes and no. It is the paradoxical spin of an electron pointing up and down at once, the polarized photon traveling two paths concurrently, the precise chill of a superconducting circuit holding two conflicting truths—a physical manifestation of possibility that collapses into a single, mundane fact the moment it is observed.
Etymology
Blend of quantum + bit, a play on cubit (“historical unit of length”). Coined by American physicist Benjamin Schumacher in 1995.
noun
- A quantum bit; the basic unit of quantum information described by a superposition of two states; a quantum bit in a quantum computer capable of being in a state of superposition; A binary qudit.“Quantum computing, on the other hand, is based on quantum bits, or qubits.”