No, bit-flips of entangled qubits do not undermine the concept of quantum entanglement. Quantum entanglement is a fundamental phenomenon in quantum mechanics where two or more particles become correlated in such a way that the state of one particle cannot be described independently of the state of the other particle(s). This correlation persists even when the particles are physically separated.
Bit-flips refer to the flipping of the state of a qubit, which is the basic unit of quantum information. In a classical system, a bit can have a value of either 0 or 1, and flipping it would change its value. Similarly, a qubit in a superposition can exist in a state of both 0 and 1 simultaneously, and a bit-flip operation on a qubit would change its state from 0 to 1 or vice versa.
In the context of entangled qubits, if one qubit undergoes a bit-flip, it does not affect the entangled state between the qubits. The entanglement is a property that describes the correlation between the qubits, not the specific states of the qubits themselves. Therefore, a bit-flip on one qubit may change the state of that qubit, but it does not break the entanglement or affect the entangled state between the qubits.
In fact, the phenomenon of entanglement is at the core of various quantum technologies and applications, such as quantum computing, quantum communication, and quantum cryptography. Entangled qubits can be used to perform quantum computations that exhibit exponential speedup compared to classical computers or enable secure communication protocols that are impossible to achieve using classical means.
So, while bit-flips can change the state of individual qubits, they do not undermine the concept or utility of quantum entanglement itself.