In quantum computing, which process limits the fidelity when entanglement manipulations are implemented using time-dependent functions?

💡 Explanation

When manipulating entangled qubits with time-dependent functions, decoherence occurs because interaction with the environment introduces random phase changes, collapsing the superposition. Therefore decoherence limits fidelity, rather than noise, gate errors, or decay, which are distinct qubit error sources.

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