The term "entanglement bit" is not commonly used in quantum computing or quantum information theory. It is possible that you may be referring to a different concept or a term that is not widely recognized.
In quantum computing, the fundamental unit of information is called a "qubit" (quantum bit). A qubit is the quantum analogue of a classical bit and can exist in a superposition of states, representing both 0 and 1 simultaneously. This property of superposition allows quantum computers to perform certain calculations more efficiently than classical computers.
Entanglement, on the other hand, is a unique property of quantum systems where two or more qubits become correlated in such a way that the state of one qubit cannot be described independently of the other(s). When qubits are entangled, the state of one qubit is instantaneously related to the state of the other qubits, regardless of the distance between them. This phenomenon is known as "quantum entanglement" and is a crucial resource in quantum computing and quantum communication protocols.
In summary, while "qubit" and "entanglement" are well-established terms in the field of quantum computing, the term "entanglement bit" is not a recognized term. If you have encountered this term in a specific context or publication, it would be helpful to provide more details to better understand its intended meaning.