Zobrazeno 1 - 10
of 3 482
pro vyhledávání: '"Pucher, A"'
Given an undirected graph, the stable set problem asks to determine the cardinality of the largest subset of pairwise non-adjacent vertices. This value is called the stability number of the graph, and its computation is an NP-hard problem. In this pa
Externí odkaz:
http://arxiv.org/abs/2405.12845
Autor:
Pucher, Thomas, Puebla, Sergio, Zamora, Victor, Viso, Estrella Sánchez, Rouco, Victor, Leon, Carlos, Garcia-Hernandez, Mar, Santamaria, Jacobo, Munuera, Carmen, Castellanos-Gomez, Andres
We present the electrostatic control of photoluminescence of monolayer MoS$_2$ at room temperature via integration of free-standing BaTiO$_3$ (BTO), a ferroelectric perovskite oxide, layers. We show that the use of BTO leads to highly tunable exciton
Externí odkaz:
http://arxiv.org/abs/2405.05862
Autor:
Pucher, Dunja, Rendl, Franz
Stable Set and Graph Coloring belong to the class of NP-hard optimization problems on graphs. It is well known that even near-optimal solutions for these problems are difficult to find in polynomial time. The Lov\'asz theta function, introduced by Lo
Externí odkaz:
http://arxiv.org/abs/2401.17069
Autor:
Pucher, S., Klüsener, V., Spriestersbach, F., Geiger, J., Schindewolf, A., Bloch, I., Blatt, S.
Publikováno v:
Physical Review Letters 132, 150605 (2024)
We demonstrate coherent control of the fine-structure qubit in neutral strontium atoms. This qubit is encoded in the metastable $^3\mathrm{P}_2$ and $^3\mathrm{P}_0$ states, coupled by a Raman transition. Using a magnetic quadrupole transition, we de
Externí odkaz:
http://arxiv.org/abs/2401.11054
Autor:
Klüsener, V., Pucher, S., Yankelev, D., Trautmann, J., Spriestersbach, F., Filin, D., Porsev, S. G., Safronova, M. S., Bloch, I., Blatt, S.
Publikováno v:
Physical Review Letters 132, 253201 (2024)
We report on the coherent excitation of the ultranarrow $^{1}\mathrm{S}_0$-$^{3}\mathrm{P}_2$ magnetic quadrupole transition in $^{88}\mathrm{Sr}$. By confining atoms in a state insensitive optical lattice, we achieve excitation fractions of 97(1)% a
Externí odkaz:
http://arxiv.org/abs/2401.03934
Autor:
Povh, Janez, Pucher, Dunja
We assess the performance of D-wave quantum solvers for solving the stable set problem in a graph, one of the most studied NP-hard problems. We perform computations on some instances from the literature with up to 125 vertices and compare the quality
Externí odkaz:
http://arxiv.org/abs/2308.13041
Autor:
Tebbenjohanns, Felix, Jia, Jihao, Antesberger, Michael, Prasad, Adarsh Shankar, Pucher, Sebastian, Rauschenbeutel, Arno, Volz, Jürgen, Schneeweiss, Philipp
Tapered optical fibers (TOFs) are used in many areas of physics and optical technologies ranging from coupling light into nanophotonic components to optical sensing and amplification to interfacing quantum emitters. Here, we study the fundamental tor
Externí odkaz:
http://arxiv.org/abs/2301.07792
Publikováno v:
Small Science, Vol 4, Iss 11, Pp n/a-n/a (2024)
Phototransistors are used in plenty of diverse applications such as optical communication systems, light sensors, imaging devices, and biomedical instruments for detecting and amplifying light signals. Herein, an approach for the large‐scale produc
Externí odkaz:
https://doaj.org/article/a000e3c1d59047b79df7cabc8b1e0795
Autor:
Pucher, PH1 (AUTHOR) philip.pucher@porthosp.nhs.uk, Maynard, N2 (AUTHOR) philip.pucher@porthosp.nhs.uk, Body, S3 (AUTHOR) philip.pucher@porthosp.nhs.uk, Bowling, K4 (AUTHOR) philip.pucher@porthosp.nhs.uk, Chaudry, M Asif5 (AUTHOR), Forshaw, M6 (AUTHOR), Hornby, S7 (AUTHOR) philip.pucher@porthosp.nhs.uk, Markar, SR2,8 (AUTHOR), Mercer, SJ1 (AUTHOR), Preston, SR9 (AUTHOR), Sgromo, B2 (AUTHOR), van Boxel, GI1 (AUTHOR), Gossage, JA10 (AUTHOR)
Publikováno v:
Bulletin of The Royal College of Surgeons of England. Nov2024, Vol. 106 Issue 8, p688-693. 6p.
Autor:
Pucher, Dunja, Rendl, Franz
We consider semidefinite relaxations of Stable-Set and Coloring, which are based on quadratic 0-1 optimization. Information about the stability number and the chromatic number is hidden in the objective function. This leads to simplified relaxations
Externí odkaz:
http://arxiv.org/abs/2211.13147