Zobrazeno 1 - 10
of 962
pro vyhledávání: '"Leuchs, Gerd"'
Autor:
Najafabadi, Mojdeh S., Sánchez-Soto, Luis L., Huang, Kun., Laurat, Julien., Jeannic, Hanna. Le, Leuchs, Gerd.
We derive a compact expression for the second-order correlation function $g^{(2)} (0)$ of a quantum state in terms of its Wigner function, thereby establishing a direct link between $g^{(2)} (0)$ and the state's shape in phase space. We conduct an ex
Externí odkaz:
http://arxiv.org/abs/2407.12901
Quantum entanglement describes superposition states in multi-dimensional systems, at least two partite, which cannot be factorized and are thus non-separable. Non-separable states exist also in classical theories involving vector spaces. In both case
Externí odkaz:
http://arxiv.org/abs/2405.15692
Autor:
Huang, Sheng-Hsuan, Dirmeier, Thomas, Shafiee, Golnoush, Laiho, Kaisa, Strekalov, Dmitry V., Leuchs, Gerd, Marquardt, Christoph
Crystalline Whispering Gallery Mode Resonators (WGMRs) have been shown to facilitate versatile sources of quantum states that can efficiently interact with atomic systems. These features make WGMRs an efficient platform for quantum information proces
Externí odkaz:
http://arxiv.org/abs/2310.16589
Autor:
Grenapin, Florence, Paneru, Dilip, D'Errico, Alessio, Grillo, Vincenzo, Leuchs, Gerd, Karimi, Ebrahim
Imaging systems measuring intensity in the far field succumb to Rayleigh's curse, a resolution limitation dictated by the finite aperture of the optical system. Many proof-of-principle and some two-dimensional imaging experiments have shown that, by
Externí odkaz:
http://arxiv.org/abs/2212.10468
Autor:
Kalinin, Nikolay, Dirmeier, Thomas, Sorokin, Arseny, Anashkina, Elena A., Sánchez-Soto, Luis L., Corney, Joel F., Leuchs, Gerd, Andrianov, Alexey V.
Publikováno v:
Adv Quantum Technol. 2023, 2200143
Squeezed light is one of the resources of photonic quantum technology. Among the various nonlinear interactions capable of generating squeezing, the optical Kerr effect is particularly easy-to-use. A popular venue is to generate polarization squeezin
Externí odkaz:
http://arxiv.org/abs/2209.14100
Autor:
Wolley, Osian, Mekhail, Simon, Moreau, Paul-Antoine, Gregory, Thomas, Gibson, Graham, Leuchs, Gerd, Padgett, Miles J.
We present a wide-field homodyne imaging system capable of recovering intensity and phase images of an object from a single camera frame at an illumination intensity significantly below the noise floor of the camera. By interfering a weak imaging sig
Externí odkaz:
http://arxiv.org/abs/2208.04898
Publikováno v:
Phys. Rev. A 105, 022433 (2022)
It is nowadays accepted that truly quantum correlations can exist even in the absence of entanglement. For the case of symmetric states, a physically trivial unitary transformation can alter a quantum state from entangled to separable and vice versa.
Externí odkaz:
http://arxiv.org/abs/2110.11361
Debate about the emptiness of the space goes back to the prehistory of science and is epitomized by the Aristotelian \emph{horror vacui}, which can be seen as the precursor of the ether, whose modern version is the dynamical quantum vacuum. Here, we
Externí odkaz:
http://arxiv.org/abs/2110.07223
Autor:
Goldberg, Aaron Z., Klimov, Andrei B., de Guise, Hubert, Leuchs, Gerd, Agarwal, Girish S., Sánchez-Soto, Luis L.
Publikováno v:
Optics Letters 47, 477 (2022)
We demonstrate that the multipoles associated with the density matrix are truly observable quantities that can be unambiguously determined from intensity moments. Given their correct transformation properties, these multipoles are the natural variabl
Externí odkaz:
http://arxiv.org/abs/2109.04474
Autor:
Teo, Yong Siah, Shin, Seongwook, Jeong, Hyunseok, Kim, Yosep, Kim, Yoon-Ho, Struchalin, Gleb I., Kovlakov, Egor V., Straupe, Stanislav S., Kulik, Sergei P., Leuchs, Gerd, Sanchez-Soto, Luis L.
Publikováno v:
New J. Phys. 23, 103021 (2021)
We train convolutional neural networks to predict whether or not a set of measurements is informationally complete to uniquely reconstruct any given quantum state with no prior information. In addition, we perform fidelity benchmarking based on this
Externí odkaz:
http://arxiv.org/abs/2103.01535