Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Clader, B. David"'
We demonstrate that the problem of amplitude estimation, a core subroutine used in many quantum algorithms, can be mapped directly to a problem in signal processing called direction of arrival (DOA) estimation. The DOA task is to determine the direct
Externí odkaz:
http://arxiv.org/abs/2405.14697
We introduce two quantum algorithms to compute the Value at Risk (VaR) and Conditional Value at Risk (CVaR) of financial derivatives using quantum computers: the first by applying existing ideas from quantum risk analysis to derivative pricing, and t
Externí odkaz:
http://arxiv.org/abs/2404.10088
Autor:
Dalzell, Alexander M., Clader, B. David, Salton, Grant, Berta, Mario, Lin, Cedric Yen-Yu, Bader, David A., Stamatopoulos, Nikitas, Schuetz, Martin J. A., Brandão, Fernando G. S. L., Katzgraber, Helmut G., Zeng, William J.
Publikováno v:
PRX Quantum 4, 040325 (2023)
We study quantum interior point methods (QIPMs) for second-order cone programming (SOCP), guided by the example use case of portfolio optimization (PO). We provide a complete quantum circuit-level description of the algorithm from problem input to pr
Externí odkaz:
http://arxiv.org/abs/2211.12489
Autor:
Clader, B. David, Dalzell, Alexander M., Stamatopoulos, Nikitas, Salton, Grant, Berta, Mario, Zeng, William J.
Publikováno v:
IEEE Transactions on Quantum Engineering, vol. 3, pp. 1-23, 2022, Art no. 3103323
We provide modular circuit-level implementations and resource estimates for several methods of block-encoding a dense $N\times N$ matrix of classical data to precision $\epsilon$; the minimal-depth method achieves a $T$-depth of $\mathcal{O}{(\log (N
Externí odkaz:
http://arxiv.org/abs/2206.03505
Publikováno v:
Phys. Rev. Applied 19, 014062 (2023)
We introduce a quantum control protocol that produces smooth, experimentally implementable control sequences optimized to combat temporally correlated noise for single qubit systems. The control ansatz is specifically chosen to be a functional expans
Externí odkaz:
http://arxiv.org/abs/2206.03504
We extend quantum noise spectroscopy (QNS) of amplitude control noise to settings where dephasing noise or detuning errors make significant contributions to qubit dynamics. Previous approaches to characterize amplitude noise are limited by their vuln
Externí odkaz:
http://arxiv.org/abs/2204.10894
Autor:
Schultz, Kevin, LaRose, Ryan, Mari, Andrea, Quiroz, Gregory, Shammah, Nathan, Clader, B. David, Zeng, William J.
Publikováno v:
Phys. Rev. A 106, 052406 (2022)
Zero-noise extrapolation is a quantum error mitigation technique that has typically been studied under the ideal approximation that the noise acting on a quantum device is not time-correlated. In this work, we investigate the feasibility and performa
Externí odkaz:
http://arxiv.org/abs/2201.11792
Publikováno v:
Optics Express, Vol. 21, Issue 5, pp. 6169-6179 (2013)
We present theoretical results of a low-loss all-optical switch based on electromagnetically induced transparency and the classical Zeno effect in a microdisk resonator. We show that a control beam can modify the atomic absorption of the evanescent f
Externí odkaz:
http://arxiv.org/abs/1208.4813
Akademický článek
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This paper is a continuation of a study by Douglass and Clader. We extend the analysis through December 2003 using the latest updates of the observational temperature and solar irradiance data sets in addition to a new volcano proxy data set. We have
Externí odkaz:
http://arxiv.org/abs/physics/0411002