Zobrazeno 1 - 10
of 1 094
pro vyhledávání: '"Brecht B"'
Autor:
Teo, Y. S., Shringarpure, S. U., Jeong, H., Prasannan, N., Brecht, B., Silberhorn, C., Evans, M., Mogilevtsev, D., Sanchez-Soto, L. L.
Publikováno v:
Phys. Rev. A 110, 012231 (2024)
We introduce the framework of Bayesian relative belief that directly evaluates whether or not the experimental data at hand supports a given hypothesis regarding a quantum system by directly comparing the prior and posterior probabilities for the hyp
Externí odkaz:
http://arxiv.org/abs/2406.03343
Autor:
Teo, Y. S., Jeong, H., Prasannan, N., Brecht, B., Silberhorn, C., Evans, M., Mogilevtsev, D., Sanchez-Soto, L. L.
Publikováno v:
Phys. Rev. Lett. 133, 050204 (2024)
Identifying a reasonably small Hilbert space that completely describes an unknown quantum state is crucial for efficient quantum information processing. We introduce a general dimension-certification protocol for both discrete and continuous variable
Externí odkaz:
http://arxiv.org/abs/2401.01562
Autor:
Roeder, F., Pollmann, R., Stefszky, M., Santandrea, M., Luo, K. -H., Quiring, V., Ricken, R., Eigner, C., Brecht, B., Silberhorn, C.
The bi-photon correlation time, a measure for the conditional uncertainty in the temporal arrival of two photons from a photon pair source, is a key performance identifier for many quantum spectroscopy applications, with shorter correlation times typ
Externí odkaz:
http://arxiv.org/abs/2310.04293
Autor:
Gil-Lopez, J., Teo, Y. S., De, S., Brecht, B., Jeong, H., Silberhorn, C., Sanchez-Soto, L. L.
We implement a compressive quantum state tomography capable of reconstructing any arbitrary low-rank spectral-temporal optical signal with extremely few measurement settings and without any \emph{ad hoc} assumptions about the initially unknown signal
Externí odkaz:
http://arxiv.org/abs/2105.12462
Autor:
Engelkemeier, M., Sperling, J., Tiedau, J., Barkhofen, S., Dhand, I., Plenio, M. B., Brecht, B., Silberhorn, C.
A scheme for the enhanced generation of higher photon-number states is realized, using an optical time-multiplexing setting that exploits a parametric down-conversion source for an iterative state generation. We use a quantum feedback mechanism for a
Externí odkaz:
http://arxiv.org/abs/2105.03720
Autor:
Roman-Rodriguez, V., Brecht, B., Kaali, S., Silberhorn, C., Treps, N., Diamanti, E., Parigi, V.
Publikováno v:
New J. Phys. 23, 043012 (2021)
Configurable and scalable continuous variable quantum networks for measurement-based quantum information protocols or multipartite quantum communication schemes can be obtained via parametric down conversion (PDC) in non-linear waveguides. In this wo
Externí odkaz:
http://arxiv.org/abs/2012.13629
Publikováno v:
Quantum Science and Technology 5.4 (2020): 045020
The phenomenon of entanglement is the basis of quantum information and quantum communication processes. Entangled systems with a large number of photons are of great interest at present because they provide a platform for streaming technologies based
Externí odkaz:
http://arxiv.org/abs/2007.10056
Autor:
Engelkemeier, M., Lorz, L., De, Syamsundar, Brecht, B., Dhand, I., Plenio, M. B., Silberhorn, C., Sperling, J.
Publikováno v:
Phys. Rev. A 102, 023712 (2020)
We develop a unified theoretical framework for the efficient description of multiphoton states generated and propagating in loop-based optical networks which contain nonlinear elements. These active optical components are modeled as nonlinear media,
Externí odkaz:
http://arxiv.org/abs/2002.08154
Publikováno v:
Phys. Rev. A 101, 063821 (2020)
An important step for photonic quantum technologies is the demonstration of a quantum advantage through boson sampling. In order to prevent classical simulability of boson sampling, the photons need to be almost perfectly identical and almost without
Externí odkaz:
http://arxiv.org/abs/2001.03596
Autor:
Gao, S., Lazo-Arjona, O., Brecht, B., Kaczmarek, K. T., Thomas, S. E., Nunn, J., Ledingham, P. M., Saunders, D. J., Walmsley, I. A.
Publikováno v:
Phys. Rev. Lett. 123, 213604 (2019)
We introduce a filter using a noise-free quantum buffer with large optical bandwidth that can both filter temporal-spectral modes, as well as inter-convert them and change their frequency. We show that such quantum buffers optimally filter out tempor
Externí odkaz:
http://arxiv.org/abs/1902.07720