All Quantum Computing Modalities Posts
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Quantum Computing Modalities
Quantum Computing Modalities: Gate-Based / Universal QC
Quantum computing in the gate-based or circuit model is the most widely pursued paradigm for realizing a universal quantum computer. In this model, computations are carried out by applying sequences of quantum logic gates to qubits (quantum bits), analogous to how classical computers use circuits of logic gates on bits. A gate-model quantum computer leverages uniquely quantum phenomena – superposition, entanglement, and interference – to…
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Quantum Computing Modalities
Quantum Computing Modalities: Quantum Annealing (QA) & Adiabatic QC (AQC)
Quantum annealing (QA) and adiabatic quantum computing (AQC) are closely related paradigms that use gradual quantum evolution to solve problems. In both approaches, a problem is encoded into a landscape of energy states (a quantum Hamiltonian), and the system is guided to its lowest-energy state which corresponds to the optimal solution.
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Quantum Computing Modalities
Quantum Computing Modalities: Quantum Cellular Automata (QCA) in Living Cells
Trapped-ion quantum computing uses individual ions (charged atoms) as qubits. Each ion’s internal quantum state (usually two hyperfine levels of the atom’s electron configuration) serves as |0⟩ and |1⟩. Ions are held in place (suspended in free space) using electromagnetic traps – typically a linear Paul trap that confines ions in a line using oscillating electric fields. By using lasers or microwaves to interact with…
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