Questions tagged [memory-space]

On memory as a resource for computation (similar to time). This can refer to performance in theoretical models, or the practical construction of such memory and related concerns. Use the appropriate tags to further specify if needed.

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Why does entanglement complicate quantum simulation?

To model a single qubit one would need enough memory for $2$ complex numbers. If we have an $N$ qubit system, we would have to store $2N$ complex numbers. The general statement is that to store an $N$-...
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Can we use quantum machines to reduce space complexity of deterministic turing machines?

Can we convert every algorithm in $\text{P}$ (polynomial time complexity for deterministic machines) into a quantum algorithm with polynomial time and $O(\log n)$ quantum bit?
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Can quantum computers handle 'big' data?

While there are many interesting questions that a computer can solve with barely any data (such as factorization, which requires "only" a single integer), most real-world applications, such as machine ...
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How much memory is required to simulate a 48-qubit circuit?

This CDMTCS Report 514, 2017 entitled "The Road to Quantum Computational Supremacy" states (in Section 6) that the amount of memory needed to simulate random quantum circuits on classical computers ...
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Simulating a system inside a system

The minimum size of a computer that could simulate the universe would be the universe itself. This is quite a pretty big theory in classical computing and physics because to contain the information ...