Zobrazeno 1 - 10
of 1 618
pro vyhledávání: '"Walborn A"'
Autor:
Melo, Cristóbal, F., Matías Reyes., Arroyo, Diego, Gómez, Esteban S., Walborn, Stephen P., Lima, Gustavo, Figueroa, Miguel, Cariñe, Jaime, Saavedra, Gabriel
The use of multicore optical fibers is now recognized as one of the most promising methods to implement the space-division multiplexing techniques required to overcome the impending capacity limit of conventional single-mode optical fibers. Nonethele
Externí odkaz:
http://arxiv.org/abs/2411.17641
Autor:
Karthik, H. S., Gómez, S., Quinteros, F. M., H., Akshata Shenoy, Pawłowski, M., Walborn, S. P., Lima, G., Gómez, E. S.
A $n^d \xrightarrow{p} 1$ Quantum Random Access Code (QRAC) is a communication task where Alice encodes $n$ classical bits into quantum states of dimension $d$ and transmits them to Bob, who performs appropriate measurements to recover the required b
Externí odkaz:
http://arxiv.org/abs/2411.07924
Autor:
de Oliveira, M. Gil, Junior, A. L. S. Santos, Barbosa, A. C., da Silva, B. Pinheiro, Santos, G. H. dos, Cañas, G., Ribeiro, P. H. Souto, Walborn, S. P., Khoury, A. Z.
We investigate theoretically and experimentally the optical second harmonic generation (SHG) with a twisted Gaussian Schell model (TGSM) beam as the fundamental field. We use Type-II phase matching and analyze the cross spectral density (CSD) of the
Externí odkaz:
http://arxiv.org/abs/2403.04040
Publikováno v:
Quantum 8, 1405 (2024)
We propose an estimation procedure for $d$-dimensional unitary transformations. For $d>2$, the unitary transformations close to the identity are estimated saturating the quantum Cram\'er-Rao bound. For $d=2$, the estimation of all unitary transformat
Externí odkaz:
http://arxiv.org/abs/2310.12699
Autor:
Villalba, Nelson, Melo, Cristóbal, Ayala, Sebastián, Mancilla, Christopher, Valenzuela, Wladimir, Figueroa, Miguel, Baradit, Erik, Lin, Riu, Tang, Ming, Walborn, Stephen P., Lima, Gustavo, Saavedra, Gabriel, Cañas, Gustavo
Orbital angular momentum can be used to implement high capacity data transmission systems that can be applied for classical and quantum communications. Here we experimentally study the generation and transmission properties of the so-called perfect v
Externí odkaz:
http://arxiv.org/abs/2308.11354
Autor:
Rojas-Rojas, Santiago, Martínez, Daniel, Sawada, Kei, Pereira, Luciano, Walborn, Stephen P., Gómez, Esteban S., Bernardes, Nadja K., Lima, Gustavo
Publikováno v:
Quantum 8, 1436 (2024)
With the advent of quantum technology, the interest in communication tasks assisted by quantum systems has increased both in academia and industry. Nonetheless, the transmission of a quantum state in real-world scenarios is bounded by environmental n
Externí odkaz:
http://arxiv.org/abs/2308.00094
Autor:
Santos, Gustavo Henrique dos, Pimenta, Raphael César Souza, Gomes, Rafael de Morais, Walborn, Stephen Patrick, Ribeiro, Paulo Henrique Souto
In parametric down conversion, a nonlinear crystal is pumped by a laser and spontaneous emission takes place in signal and idler modes according to the phase matching conditions. A seed laser can stimulate the emission in the signal beam if there is
Externí odkaz:
http://arxiv.org/abs/2303.17074
Publikováno v:
Quantum 7, 945 (2023)
The quantum switch is a quantum computational primitive that provides computational advantage by applying operations in a superposition of orders. In particular, it can reduce the number of gate queries required for solving promise problems where the
Externí odkaz:
http://arxiv.org/abs/2207.12997
Autor:
Cañas, Gustavo, Gómes, Esteban Sepúlveda, Santos, Gustavo Henrique dos, de Oliveira, André Gustavo, da Silva, Nara Rubiano, Joshi, Stuti, Ismail, Yaseera, Ribeiro, Paulo Henrique Souto, Walborn, Stephen Patrick
The twisted Gaussian Schell Model describes a family of partially coherent beams that present several interesting characteristics, and as such have attracted attention in classical and quantum optics. Recent techniques have been demonstrated to synth
Externí odkaz:
http://arxiv.org/abs/2206.02693
Autor:
Gómez, Santiago, Gómez, Esteban S., Jiménez, Omar, Delgado, Aldo, Walborn, Stephen P., Lima, Gustavo
Publikováno v:
Scientific Reports 12, 17312 (2022)
The problem of non-orthogonal state discrimination underlies crucial quantum information tasks, such as cryptography and computing protocols. Therefore, it is decisive to find optimal scenarios for discrimination among quantum states. We experimental
Externí odkaz:
http://arxiv.org/abs/2204.06689