139 citations · 1.1k across the 28 of their papers we have counts for
28 papers
Privacy in Distributed Quantum Sensing with Gaussian Quantum Networks
Uesli Alushi, Roberto Di Candia
We study the privacy properties of distributed quantum sensing protocols in a Gaussian quantum network, where each node encodes a parameter via a local phase shift. We first show t…
Interplay between time and energy in bosonic noisy quantum metrology
Wojciech Górecki, Francesco Albarelli, Simone Felicetti +2
Quantum entanglement and coherence often allow for protocols that outperform classical ones in estimating a system's parameter. When using infinite-dimensional probes (such as a bo…
Optimality and Noise-Resilience of Critical Quantum Sensing
Uesli Alushi, Wojciech Górecki, Simone Felicetti +1
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 uni…
Observation of first- and second-order dissipative phase transitions in a two-photon driven Kerr resonator
Guillaume Beaulieu, Fabrizio Minganti, Simone Frasca +4
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…
Quantum Illumination with a Hetero-Homodyne Receiver and Sequential Detection
Maximilian Reichert, Quntao Zhuang, Jeffrey H. Shapiro +1
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…
Waveguide QED with Quadratic Light-Matter Interactions
Uesli Alushi, Tomás Ramos, Juan José García-Ripoll +2
Quadratic light-matter interactions are nonlinear couplings such that quantum emitters interact with photonic or phononic modes exclusively via the exchange of excitation pairs. Im…
Quantum-enhanced Doppler lidar
Maximilian Reichert, Roberto Di Candia, Moe Z. Win +1
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…
Gaussian quantum estimation of the lossy parameter in a thermal environment
Robert Jonsson, Roberto Di Candia
Lossy bosonic channels play an important role in a number of quantum information tasks, since they well approximate thermal dissipation in an experiment. Here, we characterize thei…
Dispersive qubit readout with machine learning
Enrico Rinaldi, Roberto Di Candia, Simone Felicetti +1
Open quantum systems can undergo dissipative phase transitions, and their critical behavior can be exploited in sensing applications. For example, it can be used to enhance the fid…
Critical parametric quantum sensing
R. Di Candia, F. Minganti, K. V. Petrovnin +2
Critical quantum systems are a promising resource for quantum metrology applications, due to the diverging susceptibility developed in proximity of phase transitions. Here, we asse…
Experimental quantum teleportation of propagating microwaves
K. G. Fedorov, M. Renger, S. Pogorzalek +9
The modern field of quantum communication thrives on promise to deliver efficient and unconditionally secure ways to exchange information by exploiting quantum laws of physics. Her…
A comparison between quantum and classical noise radar sources
Robert Jonsson, Roberto Di Candia, Martin Ankel +2
We compare the performance of a quantum radar based on two-mode squeezed states with a classical radar system based on correlated thermal noise. With a constraint of equal number o…
Two-way covert quantum communication in the microwave regime
R. Di Candia, H. Yiğitler, G. S. Paraoanu +1
Quantum communication addresses the problem of exchanging information across macroscopic distances by employing encryption techniques based on quantum mechanical laws. Here, we adv…
Finite-time quantum entanglement in propagating squeezed microwaves
Kirill G. Fedorov, S. Pogorzalek, U. Las Heras +13
Two-mode squeezing is a fascinating example of quantum entanglement manifested in cross-correlations of incompatible observables between two subsystems. At the same time, these sub…
Quantum illumination reveals phase-shift inducing cloaking
U. Las Heras, R. Di Candia, K. G. Fedorov +3
In quantum illumination entangled light is employed to enhance the detection accuracy of an object when compared with the best classical protocol. On the other hand, cloaking is a…
Quantum Estimation Methods for Quantum Illumination
M. Sanz, U. Las Heras, J. J. Garcia-Ripoll +2
Quantum illumination consists in shining quantum light on a target region immersed in a bright thermal bath, with the aim of detecting the presence of a possible low-reflective obj…
Algorithmic quantum simulation of memory effects
U. Alvarez-Rodriguez, R. Di Candia, J. Casanova +2
We propose a method for the algorithmic quantum simulation of memory effects described by integrodifferential evolution equations. It consists in the systematic use of perturbation…
Displacement of propagating squeezed microwave states
Kirill G. Fedorov, L. Zhong, S. Pogorzalek +16
Displacement of propagating quantum states of light is a fundamental operation for quantum communication. It enables fundamental studies on macroscopic quantum coherence and plays…
Quantum teleportation of propagating quantum microwaves
R. Di Candia, K. G. Fedorov, L. Zhong +7
Propagating quantum microwaves have been proposed and successfully implemented to generate entanglement, thereby establishing a promising platform for the realisation of a quantum…
Measuring Entanglement in a Photonic Embedding Quantum Simulator
Juan C. Loredo, Marcelo P. Almeida, Roberto Di Candia +4
Measuring entanglement is a demanding task that usually requires full tomography of a quantum system, involving a number of observables that grows exponentially with the number of…
Entanglement classification with matrix product states
M. Sanz, I. L. Egusquiza, R. Di Candia +3
Entanglement is widely considered the cornerstone of quantum information and an essential resource for relevant quantum effects, such as quantum teleportation, quantum cryptography…
Quantum Simulation of Dissipative Processes without Reservoir Engineering
R. Di Candia, J. S. Pedernales, A. del Campo +2
We present a quantum algorithm to simulate general finite dimensional Lindblad master equations without the requirement of engineering the system-environment interactions. The prop…
Entanglement Measures in Ion-Trap Quantum Simulators without Full Tomography
J. S. Pedernales, R. Di Candia, P. Schindler +4
We propose a quantum algorithm in an embedding ion-trap quantum simulator for the efficient computation of N-qubit entanglement monotones without the necessity of full tomography.…
Efficient Quantum Algorithm for Computing n-time Correlation Functions
J. S. Pedernales, R. Di Candia, I. L. Egusquiza +2
We propose a method for computing n-time correlation functions of arbitrary spinorial, fermionic, and bosonic operators, consisting of an efficient quantum algorithm that encodes t…