Zobrazeno 1 - 10
of 223
pro vyhledávání: '"CANDIA, ROBERTO"'
Autor:
Beaulieu, Guillaume, Minganti, Fabrizio, Frasca, Simone, Scigliuzzo, Marco, Felicetti, Simone, Di Candia, Roberto, Scarlino, Pasquale
Quantum metrology, a cornerstone of quantum technologies, exploits entanglement and superposition to achieve higher precision than classical protocols in parameter estimation tasks. When combined with critical phenomena such as phase transitions, the
Externí odkaz:
http://arxiv.org/abs/2409.19968
Autor:
Górecki, Wojciech, Albarelli, Francesco, Felicetti, Simone, Di Candia, Roberto, Maccone, Lorenzo
When using infinite-dimensional probes (such as a bosonic mode), one could in principle obtain infinite precision when estimating some physical parameters. This is unphysical, as it would require infinite resources, so one needs to impose some additi
Externí odkaz:
http://arxiv.org/abs/2409.18791
Autor:
Shi, Haowei, Brady, Anthony J., Górecki, Wojciech, Maccone, Lorenzo, Di Candia, Roberto, Zhuang, Quntao
The nature of dark matter is a fundamental puzzle in modern physics. A major approach of searching for dark matter relies on detecting feeble noise in microwave cavities. However, the quantum advantages of common quantum resources such as squeezing a
Externí odkaz:
http://arxiv.org/abs/2409.04656
Critical systems represent a valuable resource in quantum sensing and metrology. Critical quantum sensing (CQS) protocols can be realized using finite-component phase transitions, where criticality is not due to the thermodynamic limit but rather to
Externí odkaz:
http://arxiv.org/abs/2407.18055
Publikováno v:
Phys. Rev. Lett. 133, 040801 (2024)
We compare critical quantum sensing to passive quantum strategies to perform frequency estimation, in the case of single-mode quadratic Hamiltonians. We show that, while in the unitary case both strategies achieve precision scaling quadratic with the
Externí odkaz:
http://arxiv.org/abs/2402.15559
Autor:
Beaulieu, Guillaume, Minganti, Fabrizio, Frasca, Simone, Savona, Vincenzo, Felicetti, Simone, Di Candia, Roberto, Scarlino, Pasquale
In open quantum systems, first- and second-order dissipative phase transitions (DPTs) can emerge in the thermodynamic limit from the competition between unitary evolution, driving terms, and dissipation. The order of a DPT is defined by the continuit
Externí odkaz:
http://arxiv.org/abs/2310.13636
Publikováno v:
Phys. Rev. Applied 20, 014030 (2023)
We propose a hetero-homodyne receiver for quantum illumination (QI) target detection. Unlike prior QI receivers, it uses a cascaded positive operator-valued measurement (POVM) that does not require a quantum interaction between QI's returned radiatio
Externí odkaz:
http://arxiv.org/abs/2303.18207
Publikováno v:
PRX Quantum 4, 030326 (2023)
Quadratic light-matter interactions are nonlinear couplings such that quantum emitters interact with photonic or phononic modes exclusively via the exchange of excitation pairs. Implementable with atomic and solid-state systems, these couplings lead
Externí odkaz:
http://arxiv.org/abs/2303.07382
Autor:
Latorre, Gonzalo, Vargas, José Ignacio, Shah, Shailja C., Ivanovic-Zuvic, Danisa, Achurra, Pablo, Fritzsche, Martín, Leung, Jai-Sen, Ramos, Bernardita, Jensen, Elisa, Uribe, Javier, Montero, Isabella, Gandara, Vicente, Robles, Camila, Bustamante, Miguel, Silva, Felipe, Dukes, Eitan, Corsi, Oscar, Martínez, Francisca, Binder, Victoria, Candia, Roberto, González, Robinson, Espino, Alberto, Agüero, Carlos, Sharp, Allan, Torres, Javiera, Roa, Juan Carlos, Pizarro, Margarita, Corvalan, Alejandro H., Rabkin, Charles S., Camargo, M. Constanza, Riquelme, Arnoldo
Publikováno v:
In Gastroenterologia y Hepatologia October 2024 47(8):793-803
Publikováno v:
npj Quantum Information 8, 147 (2022)
We propose a quantum-enhanced lidar system to estimate a target's radial velocity which employs squeezed and frequency entangled signal and idler beams. We compare its performance against a classical protocol using a coherent state with the same puls
Externí odkaz:
http://arxiv.org/abs/2203.16424