Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Alber, Gernot"'
Autor:
Schumacher, Maximilian, Alber, Gernot
Sufficient and necessary conditions are presented for the existence of $(N,M)$-positive operator valued measures ($(N,M)$-POVMs) valid for arbitrary-dimensional quantum systems. A sufficient condition for the existence of $(N,M)$-POVMs is presented.
Externí odkaz:
http://arxiv.org/abs/2310.12302
Autor:
Schumacher, Maximilian, Alber, Gernot
Recently proposed correlation-matrix based sufficient conditions for bipartite steerability from Alice to Bob are applied to local informationally complete positive operator valued measures (POVMs) of the $(N,M)$-type. These POVMs allow for a unified
Externí odkaz:
http://arxiv.org/abs/2305.17985
Autor:
Schumacher, Maximilian, Alber, Gernot
Entanglement detection by local measurements, which can possibly be performed by far distant observers, are of particular interest for applications in quantum key distribution and quantum communication. In this paper sufficient conditions for arbitra
Externí odkaz:
http://arxiv.org/abs/2305.14226
Publikováno v:
Quantum Rep. 6, 366 (2024)
Motivated by the revitalized interest in the digital simulation of medium- and high-energy physics phenomena, we investigate the dynamics following a Yukawa-interaction quench on IBM Q. Adopting the zero-dimensional version of the scalar Yukawa-coupl
Externí odkaz:
http://arxiv.org/abs/2211.02684
Publikováno v:
Phys. Rev. Research 4, 033087 (2022)
Motivated by the significantly improved scalability of optically-trapped neutral-atom systems, extensive efforts have been devoted in recent years to quantum-state engineering in Rydberg-atom ensembles. Here we investigate the problem of engineering
Externí odkaz:
http://arxiv.org/abs/2111.09718
Publikováno v:
Physical Review A 104, 052608 (2021)
Resonant dissipation-enabled adiabatic quantum state transfer processes between the polarization degrees of freedom of a single photon wave packet and quantum emitters are discussed. These investigations generalize previous work [N. Trautmann and G.
Externí odkaz:
http://arxiv.org/abs/2108.13524
Publikováno v:
Phys. Rev. A 104, 053110 (2021)
Fast and nearly lossless atomic transport, enabled by moving the confining trap, is a prerequisite for many quantum-technology applications. While theoretical studies of this problem have heretofore focussed almost exclusively on simplified scenarios
Externí odkaz:
http://arxiv.org/abs/2108.10336
Publikováno v:
Phys. Rev. A 103, 032427 (2021)
We investigate the possibilities for a deterministic conversion between two important types of maximally entangled multiqubit states, namely, $W$ and Greenberger-Horne-Zeilinger (GHZ) states, in the Rydberg-blockade regime of a neutral-atom system wh
Externí odkaz:
http://arxiv.org/abs/2012.15169
Autor:
Stonner, David Jakob, Kysela, Jaroslav, Weir, Graeme, Novotny, Jaroslav, Alber, Gernot, Jex, Igor
Twirling operations, which average a quantum state with respect to a unitary subgroup, have become a frequently-employed tool in quantum information processing. We investigate the efficient implementation of twirling operations with minimal resources
Externí odkaz:
http://arxiv.org/abs/1912.06014
Publikováno v:
Cryptography 3 (4), 25 (2019)
Optical physical unclonable keys are currently considered to be rather promising candidates for the development of entity authentication protocols, which offer security against both classical and quantum adversaries. In this work we investigate the r
Externí odkaz:
http://arxiv.org/abs/1910.11579