Results 1 to 10 of about 391 (68)
Frequentist and Bayesian Quantum Phase Estimation
Entropy, 2018 Frequentist and Bayesian phase estimation strategies lead to conceptually different results on the state of knowledge about the true value of an unknown parameter.
Yan Li +5 more
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Experimental Advances in Phase Estimation with Photonic Quantum States
EntropyPhotonic quantum metrology has emerged as a leading platform for quantum-enhanced precision measurements. By taking advantage of quantum resources such as entanglement, quantum metrology enables parameter estimation with sensitivities surpassing ...
Laura T. Knoll +2 more
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Heisenberg-limited quantum phase estimation of multiple eigenvalues with few control qubits [PDF]
Quantum, 2022 Quantum phase estimation is a cornerstone in quantum algorithm design, allowing for the inference of eigenvalues of exponentially-large sparse matrices.The maximum rate at which these eigenvalues may be learned, –known as the Heisenberg limit–, is ...
Alicja Dutkiewicz +2 more
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Error Mitigation via Verified Phase Estimation
PRX Quantum, 2021 The accumulation of noise in quantum computers is the dominant issue stymieing the push of quantum algorithms beyond their classical counterparts. We do not expect to be able to afford the overhead required for quantum error correction in the next decade,
Thomas E. O’Brien +7 more
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npj Quantum Information, 2022 The quantum Cramér–Rao bound sets a fundamental limit on the accuracy of unbiased parameter estimation in quantum systems, relating the uncertainty in determining a parameter to the inverse of the quantum Fisher information. We experimentally demonstrate
Min Yu +10 more
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QREChem: quantum resource estimation software for chemistry applications
Frontiers in Quantum Science and Technology, 2023 As quantum hardware continues to improve, more and more application scientists have entered the field of quantum computing. However, even with the rapid improvements in the last few years, quantum devices, especially for quantum chemistry applications ...
Matthew Otten +7 more
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Faster Coherent Quantum Algorithms for Phase, Energy, and Amplitude Estimation [PDF]
Quantum, 2021 We consider performing phase estimation under the following conditions: we are given only one copy of the input state, the input state does not have to be an eigenstate of the unitary, and the state must not be measured.
Patrick Rall
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On low-depth algorithms for quantum phase estimation [PDF]
Quantum, 2023 Quantum phase estimation is one of the critical building blocks of quantum computing. For early fault-tolerant quantum devices, it is desirable for a quantum phase estimation algorithm to (1) use a minimal number of ancilla qubits, (2) allow for inexact ...
Hongkang Ni, Haoya Li, Lexing Ying
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Statistical Phase Estimation and Error Mitigation on a Superconducting Quantum Processor
PRX Quantum, 2023 Quantum phase estimation (QPE) is a key quantum algorithm, which has been widely studied as a method to perform chemistry and solid-state calculations on future fault-tolerant quantum computers.
Nick S. Blunt +4 more
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Adaptive Phase Estimation with Squeezed Vacuum Approaching the Quantum Limit [PDF]
QuantumPhase estimation plays a central role in communications, sensing, and information processing. Quantum correlated states, such as squeezed states, enable phase estimation beyond the shot-noise limit, and in principle approach the ultimate quantum limit in
M. A. Rodríguez-García, F. E. Becerra
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