Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Rutkowski, Adam"'
Autor:
Rutkowski, Adam, Siudzińska, Katarzyna
This paper explores geometric aspects of the inverse Choi-Jamio{\l}kowski isomorphism. It focuses on qubit channels corresponding to two-qubit circulant states that satisfy Bell's nonlocality condition. The main part is devoted to a characterization
Externí odkaz:
http://arxiv.org/abs/2407.16035
Publikováno v:
Phys. Rev. Research 2, 043022 (2020)
A significant number of servers that constitute the Internet are to provide private data via private communication channels to mutually anonymous registered users. Such are the servers of banks, hospitals that provide cloud storage and many others. R
Externí odkaz:
http://arxiv.org/abs/1912.07548
Autor:
Rutkowski, Adam, Studziński, Michał
In this paper we show an explicit construction of multipartite class of entangled states with the PPT (Positive Partial Transposition) property in every cut. We investigate properties of this class of states focusing on the trace distance from the se
Externí odkaz:
http://arxiv.org/abs/1906.10023
Publikováno v:
Phys. Rev. A 99, 022309 (2019)
For multipartite states we consider a notion of D-symmetry. For a system of $N$ qubits it concides with usual permutational symmetry. In case of $N$ qudits ($d\geq 3$) the D-symmetry is stronger than the permutational one. For the space of all D-symm
Externí odkaz:
http://arxiv.org/abs/1810.05522
Autor:
Hill, Charles A., Kusaka, Akito, Barton, Paul, Bixler, Bryce, Droster, Alex G., Flament, Mael, Ganjam, Suhas, Jadbabaie, Arian, Jeong, Oliver, Lee, Adrian T., Madurowicz, Alex, Matsuda, Fred T., Matsumura, Tomotake, Rutkowski, Adam, Sakurai, Yuki, Sponseller, Danielle R., Suzuki, Aritoki, Tat, Raymond
We describe the design of a cryogenic rotation stage (CRS) for use with the cryogenic half-wave plate (CHWP) polarization modulator on the POLARBEAR-2b and POLARBEAR-2c (PB2b/c) cosmic microwave background (CMB) experiments, the second and third inst
Externí odkaz:
http://arxiv.org/abs/1805.10403
A problem of further generalization of generalized Choi maps $\Phi_{[a,b,c]}$ acting on $\mathbb{M}_3$ introduced by Cho, Kye and Lee is discussed. Some necessary conditions for positivity of the generalized maps are provided as well as some sufficie
Externí odkaz:
http://arxiv.org/abs/1802.05558
Autor:
Markiewicz, Marcin, Kolodziejski, Adrian, Puchala, Zbigniew, Rutkowski, Adam, Tylec, Tomasz, Laskowski, Wieslaw
Publikováno v:
Phys. Rev. A 97, 042339 (2018)
Detecting quantumness of correlations (especially entanglement) is a very hard task even in the simplest case i.e. two-partite quantum systems. Here we provide an analysis whether there exists a relation between two most popular types of entanglement
Externí odkaz:
http://arxiv.org/abs/1802.00806
Autor:
Zhuo, Zhao, Mondal, Spandan, Markiewicz, Marcin, Rutkowski, Adam, Dakić, Borivoje, Laskowski, Wiesław, Paterek, Tomasz
Publikováno v:
Phys. Rev. A 98, 022108 (2018)
Quantum coherence can be used to infer the presence of a detector without triggering it. Here we point out that, according to quantum mechanics, such interaction-free measurements cannot be perfect, i.e., in a single-shot experiment one has strictly
Externí odkaz:
http://arxiv.org/abs/1801.05578
Autor:
Marciniak, Marcin, Rutkowski, Adam
Publikováno v:
Linear Algebra and its Applications Volume 529, 215-257, 2017
For two positive maps $\phi_i:B(\mathcal{K}_i)\to B(\mathcal{H}_i)$, $i=1,2$, we construct a new linear map $\phi:B(\mathcal{H})\to B(\mathcal{K})$, where $\mathcal{K}=\mathcal{K}_1\oplus\mathcal{K}_2\oplus\mathbb{C}$, $\mathcal{H}=\mathcal{H}_1\oplu
Externí odkaz:
http://arxiv.org/abs/1605.02219
Publikováno v:
Phys. Rev. Lett. 118, 020402 (2017)
Quantum steering is a relatively simple test for quantumness of correlations, proving that the values of quantum-mechanical measurement outcomes come into being only in the act of measurement. By exploiting quantum correlations Alice can influence --
Externí odkaz:
http://arxiv.org/abs/1603.07861