10.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute for High Energy PhysicsES2k papers
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23 papers · 2 filters
The role of coherence theory in attractor quantum neural networks
Carlo Marconi, Pau Colomer Saus, María García Díaz +1
We investigate attractor quantum neural networks (aQNNs) within the framework of coherence theory. We show that: i) aQNNs are associated to non-coherence-generating quantum channel…
Local quantum overlapping tomography
Bruna G. M. Araújo, Márcio M. Taddei, Daniel Cavalcanti +1
Reconstructing the full quantum state of a many-body system requires the estimation of a number of parameters that grows exponentially with system size. Nevertheless, there are sit…
Equilibration of Multitime Quantum Processes in Finite Time Intervals
Neil Dowling, Pedro Figueroa-Romero, Felix A. Pollock +2
A generic non-integrable (unitary) out-of-equilibrium quantum process, when interrogated across many times, is shown to yield the same statistics as an (non-unitary) equilibrated p…
Spatially strongly confined atomic excitation via two dimensional stimulated Raman adiabatic passage
Hamid R. Hamedi, Giedrius Zlabys, Veronica Ahufinger +3
We consider a method of sub-wavelength superlocalization and patterning of atomic matter waves via a two dimensional stimulated Raman adiabatic passage (2D STIRAP) process. An atom…
Topologically driven no-superposing theorem with a tight error bound
Zuzana Gavorová
To better understand quantum computation we can search for its limits or no-gos, especially if analogous limits do not appear in classical computation. Classical computation easily…
Metrology-assisted entanglement distribution in noisy quantum networks
Simon Morelli, David Sauerwein, Michalis Skotiniotis +1
We consider the distribution of high-dimensional entangled states to multiple parties via noisy channels and the subsequent probabilistic conversion of these states to desired targ…
Superresolving collective quantum measurements
J. O. de Almeida, M. Lewenstein, M. Skotiniotis
We demonstrate a method for super-resolving signals encoded as finite mixtures of bosonic modes using collective measurements that exploit permutation symmetry. Specifically, we us…
Thermality versus objectivity: can they peacefully coexist?
Thao P. Le, Andreas Winter, Gerardo Adesso
Under the influence of external environments, quantum systems can undergo various different processes, including decoherence and equilibration. We observe that macroscopic objects…
Extendibility limits the performance of quantum processors
Eneet Kaur, Siddhartha Das, Mark M. Wilde +1
Resource theories in quantum information science are helpful for the study and quantification of the performance of information-processing tasks that involve quantum systems. These…
Probing infinite many-body quantum systems with finite-size quantum simulators
Viacheslav Kuzmin, Torsten V. Zache, Christian Kokail +4
Experimental studies of synthetic quantum matter are necessarily restricted to approximate ground states prepared on finite-size quantum simulators. In general, this limits their r…
Relaxation of Multitime Statistics in Quantum Systems
Neil Dowling, Pedro Figueroa-Romero, Felix A. Pollock +2
Equilibrium statistical mechanics provides powerful tools to understand physics at the macroscale. Yet, the question remains how this can be justified based on a microscopic quantu…
Open quantum systems coupled to finite baths: A hierarchy of master equations
Andreu Riera-Campeny, Anna Sanpera, Philipp Strasberg
An open quantum system in contact with an infinite bath approaches equilibrium, while the state of the bath remains unchanged. If the bath is finite, the open system still relaxes…
Quantum Physics in Space
Alessio Belenchia, Matteo Carlesso, Ömer Bayraktar +17
Advances in quantum technologies are giving rise to a revolution in the way fundamental physics questions are explored at the empirical level. At the same time, they are the seeds…
Online identification of symmetric pure states
Gael Sentís, Esteban Martínez-Vargas, Ramon Muñoz-Tapia
We consider online strategies for discriminating between symmetric pure states with zero error when copies of the states are provided. Optimized online strategies involve local…
Testing the foundations of quantum physics in space Interferometric and non-interferometric tests with Large Particles
Giulio Gasbarri, Alessio Belenchia, Matteo Carlesso +5
Quantum technologies are opening novel avenues for applied and fundamental science at an impressive pace. In this perspective article, we focus on the promises coming from the comb…
Computation-aided classical-quantum multiple access to boost network communication speeds
Masahito Hayashi, Angeles Vazquez-Castro
A multiple access channel (MAC) consists of multiple senders simultaneously transmitting their messages to a single receiver. For the classical-quantum case (cq-MAC), achievable ra…
Mechanical frequency control in inductively coupled electromechanical systems
Thomas Luschmann, Philip Schmidt, Frank Deppe +4
Nano-electromechanical systems implement the opto-mechanical interaction combining electromagnetic circuits and mechanical elements. We investigate an inductively coupled nano-elec…
Experimental quantum phase discrimination enhanced by controllable indistinguishability-based coherence
Kai Sun, Zheng-Hao Liu, Yan Wang +11
Quantum coherence, a basic feature of quantum mechanics residing in superpositions of quantum states, is a resource for quantum information processing. Coherence emerges in a funda…
Testing identity of collections of quantum states: sample complexity analysis
Marco Fanizza, Raffaele Salvia, Vittorio Giovannetti
We study the problem of testing identity of a collection of unknown quantum states given sample access to this collection, each state appearing with some known probability. We show…
A semi-agnostic ansatz with variable structure for quantum machine learning
M. Bilkis, M. Cerezo, Guillaume Verdon +2
Quantum machine learning -- and specifically Variational Quantum Algorithms (VQAs) -- offers a powerful, flexible paradigm for programming near-term quantum computers, with applica…
Bosonic data hiding: power of linear vs non-linear optics
Krishna Kumar Sabapathy, Andreas Winter
We show that the positivity of the Wigner function of Gaussian states and measurements provides an elegant way to bound the discriminating power of "linear optics", which we formal…
Capacities of Gaussian Quantum Channels with Passive Environment Assistance
Samad Khabbazi Oskouei, Stefano Mancini, Andreas Winter
Passive environment assisted communication takes place via a quantum channel modeled as a unitary interaction between the information carrying system and an environment, where the…
Autonomous implementation of thermodynamic cycles at the nanoscale
Philipp Strasberg, Christopher W. Wächtler, Gernot Schaller
There are two paradigms to study nanoscale engines in stochastic and quantum thermodynamics. Autonomous models, which do not rely on any external time-dependence, and models that m…