Accelerated Quantum Amplitude Estimation without QFT
We put forward a Quantum Amplitude Estimation algorithm delivering superior performance (lower quantum computational complexity and faster classical computation parts) compared to the approaches available to-date. The algorithm does not relay on the Quantum Fourier Transform and its quantum computat...
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| description | We put forward a Quantum Amplitude Estimation algorithm delivering superior performance (lower quantum computational complexity and faster classical computation parts) compared to the approaches available to-date. The algorithm does not relay on the Quantum Fourier Transform and its quantum computational complexity is of order \(O(\frac{1}{\varepsilon})\) in terms of the target accuracy \(\varepsilon>0\). The \(O(\frac{1}{\varepsilon})\) bound on quantum computational complexity is also superior compared to those in the earlier approaches due to smaller constants. Moreover, a much tighter bound is obtained by means of computer-assisted estimates for the expected value of quantum computational complexity. The correctness of the algorithm and the \(O(\frac{1}{\varepsilon})\) bound on quantum computational complexity are supported by precise proofs. |
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| subjects | Algorithms Amplitudes Complexity Fourier transforms |
| title | Accelerated Quantum Amplitude Estimation without QFT |
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