Zobrazeno 1 - 10
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pro vyhledávání: '"David, R. M."'
Autor:
Thio, Jonathan J., Salmon, Wilfred, Barnes, Crispin H. W., De Bièvre, Stephan, Arvidsson-Shukur, David R. M.
We uncover new features of generalized contextuality by connecting it to the Kirkwood-Dirac (KD) quasiprobability distribution. Quantum states can be represented by KD distributions, which take values in the complex unit disc. Only for ``KD-positive'
Externí odkaz:
http://arxiv.org/abs/2412.00199
Given two observables $A$ and $B$, one can associate to every quantum state a Kirkwood-Dirac (KD) quasiprobability distribution. KD distributions are like joint classical probabilities except that they can have negative or nonreal values, which are a
Externí odkaz:
http://arxiv.org/abs/2407.04558
Autor:
Long, Christopher K., Mayhall, Nicholas J., Economou, Sophia E., Barnes, Edwin, Barnes, Crispin H. W., Martins, Frederico, Arvidsson-Shukur, David R. M., Mertig, Normann
Standing as one of the most significant barriers to reaching quantum advantage, state-preparation fidelities on noisy intermediate-scale quantum processors suffer from quantum-gate errors, which accumulate over time. A potential remedy is pulse-based
Externí odkaz:
http://arxiv.org/abs/2406.10913
Autor:
Langrenez, Christopher, Salmon, Wilfred, De Bièvre, Stephan, Thio, Jonathan J., Long, Christopher K., Arvidsson-Shukur, David R. M.
A central problem in quantum information is determining quantum-classical boundaries. A useful notion of classicality is provided by the quasiprobability formulation of quantum theory. In this framework, a state is called classical if it is represent
Externí odkaz:
http://arxiv.org/abs/2405.17557
Autor:
Arvidsson-Shukur, David R. M., Braasch Jr., William F., De Bievre, Stephan, Dressel, Justin, Jordan, Andrew N., Langrenez, Christopher, Lostaglio, Matteo, Lundeen, Jeff S., Halpern, Nicole Yunger
The most famous quasi-probability distribution, the Wigner function, has played a pivotal role in the development of a continuous-variable quantum theory that has clear analogues of position and momentum. However, the Wigner function is ill-suited fo
Externí odkaz:
http://arxiv.org/abs/2403.18899
Autor:
Song, Xingrui, Salvati, Flavio, Gaikwad, Chandrashekhar, Halpern, Nicole Yunger, Arvidsson-Shukur, David R. M., Murch, Kater
Publikováno v:
Phys. Rev. Lett. 132, 260801 (2024)
The goal of quantum metrology is to improve measurements' sensitivities by harnessing quantum resources. Metrologists often aim to maximize the quantum Fisher information, which bounds the measurement setup's sensitivity. In studies of fundamental li
Externí odkaz:
http://arxiv.org/abs/2403.00054
Autor:
David R. M. Irving
Publikováno v:
Historia Crítica, Vol 94, Pp 23-44 (2024)
Objective/Context: This article examines dimensions of sensoriality within the writings of Thomas Gage (c. 1603–1656) regarding his experiences as a Dominican friar in Mexico and Guatemala between 1625 and 1637. His 1648 travelogue, The English-Ame
Externí odkaz:
https://doaj.org/article/fde5976380054703910a840b1e5bd531
The quantum approximate optimization algorithm (QAOA) is an appealing proposal to solve NP problems on noisy intermediate-scale quantum (NISQ) hardware. Making NISQ implementations of the QAOA resilient to noise requires short ansatz circuits with as
Externí odkaz:
http://arxiv.org/abs/2309.00047