Results 11 to 20 of about 552,279 (292)
Amplitude estimation without phase estimation [PDF]
Quantum Information Processing, 2020 AbstractThis paper focuses on the quantum amplitude estimation algorithm, which is a core subroutine in quantum computation for various applications. The conventional approach for amplitude estimation is to use the phase estimation algorithm, which consists of many controlled amplification operations followed by a quantum Fourier transform.
Yohichi Suzuki +5 more
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Amplitude Estimation from Quantum Signal Processing [PDF]
Quantum, 2023 Amplitude estimation algorithms are based on Grover's algorithm: alternating reflections about the input state and the desired outcome. But what if we are given the ability to perform arbitrary rotations, instead of just reflections?
Patrick Rall, Bryce Fuller
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Noisy quantum amplitude estimation without noise estimation [PDF]
Physical Review A, 2022 Many quantum algorithms contain an important subroutine, the quantum amplitude estimation. As the name implies, this is essentially the parameter estimation problem and thus can be handled via the established statistical estimation theory. However, this problem has an intrinsic difficulty that the system, i.e., the real quantum computing device ...
Tomoki Tanaka +4 more
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Real quantum amplitude estimation
EPJ Quantum Technology, 2023 AbstractWe introduce the Real Quantum Amplitude Estimation (RQAE) algorithm, an extension of Quantum Amplitude Estimation (QAE) which is sensitive to the sign of the amplitude. RQAE is an iterative algorithm which offers explicit control over the amplification policy through an adjustable parameter.
Manzano, Alberto +2 more
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Low depth algorithms for quantum amplitude estimation [PDF]
Quantum, 2022 We design and analyze two new low depth algorithms for amplitude estimation (AE) achieving an optimal tradeoff between the quantum speedup and circuit depth.
Tudor Giurgica-Tiron +4 more
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Faster amplitude estimation [PDF]
Quantum Information and Computation, 2020 In this paper, we introduce an efficient algorithm for the quantum amplitude estimation task which is tailored for near-term quantum computers. The quantum amplitude estimation is an important problem which has various applications in fields such as quantum chemistry, machine learning, and finance.
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A Hybrid Quantum Image-Matching Algorithm
Entropy, 2022 Image matching is an important research topic in computer vision and image processing. However, existing quantum algorithms mainly focus on accurate matching between template pixels, and are not robust to changes in image location and scale. In addition,
Guoqiang Shu +4 more
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Extraction of Instantaneous Frequencies and Amplitudes in Nonstationary Time-Series Data
IEEE Access, 2021 Time-series analysis is critical for a diversity of applications in science and engineering. By leveraging the strengths of modern gradient descent algorithms, the Fourier transform, multi-resolution analysis, and Bayesian spectral analysis, we propose a
Daniel E. Shea +4 more
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Electronics Letters, 2023 This letter presents an improved Self‐Interference Cancellation (SIC) receiver with Demodulation Reference Signal (DMRS)‐based power estimation for In‐band Full‐duplex (IBFD) transmission.
J. K. Kim
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Frontiers in Neuroscience, 2023 Auditory temporal resolution plays a critical role in the everyday experience of listening to complex acoustic patterns. Amplitude modulation detection thresholds are widely used to measure auditory temporal resolution.
Shuji Mori +6 more
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