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Writer's picturemansour ansari

Classical Algorithms vs Quantum Algorithms


Okay. The journey learning the IBM Qiskit continues. With six comprehensive parts covering the essence, workings, and implications of quantum teleportation, it's time to explore new frontiers within quantum computing (QC) that build upon this foundational knowledge. The next step could be to delve into specific quantum algorithms or concepts that showcase the power of QC and how it's poised to revolutionize various fields.


Let's talk about Algorithms a bit. Algorithms empower computers, whether quantum or classical, to solve meaningful problems. But their inner workings differ profoundly. Classical algorithms harness binary bits, acting decisively based on logic gates processing 0s or 1s. Though modern silicon chips execute billions of instructions per second, traditional computing strains against intractable problems. Billions of instructions per second is not enough to solve certain problems, the intractable ones. Let's talk about this a bit more.


So, Quantum algorithms unleash counterintuitive properties of subatomic particles to circumvent such limitations. Rather than definitive bits, quantum computations employ fuzzy qubits in superpositions of 0 and 1. Interconnected qubits become entangled - mysteriously intertwined across vast distances. By encoding problems into cleverly choreographed quantum interference, their exponentially escalating complexity gets conquered through parallel universes.


Consider searching an unordered list. Classically, each entry must be inspected one-by-one to identify the target - an linear, dead-end task. But a quantum algorithm leverages superposition to query all list items simultaneously before interference effects spotlight just the desired match by collapsing quantum weirdness. Voila! Grover's algorithm executes the search vastly faster.


Factoring large numbers into primes underpins cryptography securing online commerce and communications. Yet conventional methods grind gradually through potential divisors. Shor's quantum algorithm unravels the Gordian knot in nearly quadratic time. Hello, cracked codes!

Simulation equally exemplifies quantum's insurmountable advantages. Modeling large molecules like catalysts or drugs through first-principles physics remains practically impossible for even the mightiest supercomputers. But quantum chemists can map intricate atomic interactions natively onto quantum hardware, yielding exact solutions.

So while both turn coffee, eggs, and flour into breakfast, classical algorithms follow step-by-step recipes sequentially. Quantum algorithms prepare ingredients in parallel universes before magic brings the omelet to reality. The code may be complex, but the meal emerges fast and perfect. Appetites for solving intractable problems can finally be satiated.


So, for the next post, we delve into this even more.



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