Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Marcin Jarzyna"'
Publikováno v:
New Journal of Physics, Vol 22, Iss 4, p 043010 (2020)
We consider a communication scenario where classical information is encoded in an ensemble of quantum states that admit a power series expansion in a cost parameter and converge to a single zero cost state with vanishing cost. For a given measurement
Externí odkaz:
https://doaj.org/article/0b5d707cc91748059ae9ca1d81124586
Publikováno v:
New Journal of Physics, Vol 19, Iss 7, p 073013 (2017)
We analyse the phase space representation of the optimal measurement of a phase shift in an interferometer with equal photon loss in both its arms. In the local phase estimation scenario with a fixed number of photons, we identify features of the spi
Externí odkaz:
https://doaj.org/article/89b86e59558b4ee88b868b681cc58d1c
Publikováno v:
New Journal of Physics, Vol 19, Iss 7, p 073034 (2017)
We point out a contrasting role the entanglement plays in communication and estimation scenarios. In the first case it brings noticeable benefits at the measurement stage (output super-additivity), whereas in the latter it is the entanglement of the
Externí odkaz:
https://doaj.org/article/98e26ff92cd644219d22b42054326b2b
Publikováno v:
New Journal of Physics, Vol 17, Iss 1, p 013010 (2015)
We show that quantification of the performance of quantum-enhanced measurement schemes based on the concept of quantum Fisher information (QFI) yields results that are asymptotically equivalent to those from the rigorous Bayesian approach, provided g
Externí odkaz:
https://doaj.org/article/d0f5f323d8064e83a2b9b1ab9c3b5fc5
Publikováno v:
IEEE Journal on Selected Areas in Communications. 38:496-505
Quantum fingerprinting reduces communication complexity of determination whether two $n$ -bit long inputs are equal or different in the simultaneous message passing model. Here we quantify the advantage of quantum fingerprinting over classical protoc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb256cc48bed3ee3b787670bfaf1bb28
https://doi.org/10.1109/jsac.2020.2968996
https://doi.org/10.1109/jsac.2020.2968996
Long-distance fiber communication stands as a cornerstone of modern technology. One of the underlying principles, preventing signal levels from diminishing below the detectability threshold, is optical amplification. In particular, phase-sensitive am
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0811340ed15e4d85882c0dca53b05e2
Publikováno v:
IEEE Communications Letters. :1-1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3abfd7fc5b99feccec7113e9225f6a0a
https://doi.org/10.1109/lcomm.2023.3273305
https://doi.org/10.1109/lcomm.2023.3273305
Publikováno v:
International Conference on Space Optics — ICSO 2020.
A method for photon-efficient quantum key distribution (QKD) is proposed and analyzed theoretically. The technique is based on nested encoding of multiple logical qubits into the discretized temporal degree of freedom of a single photon. The states o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05237794d0698e7a1608373afaae851f
https://doi.org/10.1117/12.2599962
https://doi.org/10.1117/12.2599962
Publikováno v:
Scopus-Elsevier
The Shannon capacity of a point-to-point link with an optimised configuration of optical amplifiers is compared with general detection strategies permitted by quantum mechanics. Results suggest that the primary application area of receivers based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a8bcbd39dab4b2a737efdbdbb54cf79
Autor:
Marcin Jarzyna, Konrad Banaszek, Karol Łukanowski, Yink Loong Len, Chandan Datta, Jan Kołodyński
Publikováno v:
Physical Review A. 102
Conventional incoherent imaging based on measuring the spatial intensity distribution in the image plane faces the resolution hurdle described by the Rayleigh diffraction criterion. Here, we demonstrate theoretically using the concept of the Fisher i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::634fc502feb0bb24c267b9e370c3e383
https://doi.org/10.1103/physreva.102.063526
https://doi.org/10.1103/physreva.102.063526