Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Agata M. Brańczyk"'
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043149 (2020)
We study the collective decay rates of multidimensional quantum networks in which one-dimensional waveguides form an intersecting hyperrectangular lattice, with qubits located at the lattice points. We introduce and motivate the dimensional reduction
Externí odkaz:
https://doaj.org/article/089824a9d8ef43fca68b196fc3e835fa
Autor:
Fatih Dinc, Agata M. Brańczyk
Publikováno v:
Physical Review Research, Vol 1, Iss 3, p 032042 (2019)
We study non-Markovian enhancement effects in the spontaneous emission of a collective excitation in a linear chain of up to 100 qubits coupled to a one-dimensional waveguide. We find that for a critical separation of qubits, the system exhibits supe
Externí odkaz:
https://doaj.org/article/32d0e650dc5649fca28e796e8a7fe079
Publikováno v:
Quantum, Vol 3, p 213 (2019)
We develop a formalism for modelling $exact$ time dynamics in waveguide quantum electrodynamics (QED) using the real-space approach. The formalism does not assume any specific configuration of emitters and allows the study of Markovian dynamics $\tex
Externí odkaz:
https://doaj.org/article/dce29bac38e347dabc0e0d4591b957a2
Autor:
Agata M. Brańczyk, Alexander Pickston, Christopher L. Morrison, Peter Barrow, Francesco Graffitti, Joseph Ho, Alessandro Fedrizzi
Publikováno v:
Optics express. 29(5)
The ideal photon-pair source for building up multi-qubit states needs to produce indistinguishable photons with high efficiency. Indistinguishability is crucial for minimising errors in two-photon interference, central to building larger states, whil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c63d9ace2d035d8ce2102ed121c9c0c
https://pubmed.ncbi.nlm.nih.gov/33726209
https://pubmed.ncbi.nlm.nih.gov/33726209
Publikováno v:
Physical Review A. 102
We propose a method for simulating an Unruh-DeWitt detector, coupled to a 1+1-dimensional massless scalar field, with a suitably-engineered $\chi^{(2)}$ nonlinear interaction. In this simulation, the parameter playing the role of the detector acceler
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2d645b1b3ce6de30ff46b94745a8bf4
https://doi.org/10.1103/physreva.102.033506
https://doi.org/10.1103/physreva.102.033506
Autor:
Agata M. Brańczyk, Fatih Dinc
Publikováno v:
Physical Review Research. 1
We study non-Markovian enhancement effects in the spontaneous emission of a collective excitation in a linear chain of up to 100 qubits coupled to a 1D waveguide. We find that for a critical separation of qubits, the system exhibits super-superradian
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c86bab46955a61e1a4e825921b6a8a3b
https://doi.org/10.1103/physrevresearch.1.032042
https://doi.org/10.1103/physrevresearch.1.032042
Autor:
Peter Barrow, Agata M. Brańczyk, Dmytro Kundys, Massimiliano Proietti, Alex Pickston, Alessandro Fedrizzi, Francesco Graffitti
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Photonic quantum technologies rely on the deterministic preparation of quantum states encoded in singlephotons degrees of freedom. While polarisation, orbital angular momentum and path have been routinely used since the early days of photonic quant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::950b49460d5649093dfae33282dca3de
https://doi.org/10.1109/cleoe-eqec.2019.8871592
https://doi.org/10.1109/cleoe-eqec.2019.8871592
Autor:
Agata M. Brańczyk, Francesco Graffitti, Peter Barrow, Alessandro Fedrizzi, Alexander Pickston
Photonic quantum technology increasingly uses frequency encoding to enable higher quantum information density and noise resilience. Pulsed time-frequency modes (TFM) represent a unique class of spectrally encoded quantum states of light that enable a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4351a48c292cf16e7f532254113d363
When building a parametric downconversion photon-pair source with spectrally separable photons, e.g. for making high-purity heralded single photons, two practical issues must be accounted for: the design of the experiment, and its characterization. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48fa23509ff90466f08e84eb8547eccf
http://arxiv.org/abs/1807.01015
http://arxiv.org/abs/1807.01015
Autor:
Agata M. Brańczyk, Nicolás Quesada
Many nonlinear optical technologies require the two-mode spectral amplitude function that describes them---the \emph{joint spectral amplitude} (JSA)---to be separable. We prove that the JSA factorizes \emph{only} when the incident pump field and phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d9332eb147ef71db80a817a1107ca06