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6 papers · 2 filters
Optimal Control Methods for Quantum Batteries
Francesco Mazzoncini, Vasco Cavina, Gian Marcello Andolina +2
We investigate the optimal charging processes for several models of quantum batteries, finding how to maximize the energy stored in a given battery with a finite-time modulation of…
Quantum metrology using time-frequency as quantum continuous variables: Resources, sub shot-noise precision and phase space representation
Eloi Descamps, Nicolas Fabre, Arne Keller +1
We study the role of the electromagnetic field's frequency in time precision measurements using single photons as a paradigmatic system. For such, we independently identify the con…
Long-Range QKD without Trusted Nodes is Not Possible with Current Technology
Bruno Huttner, Romain Alléaume, Eleni Diamanti +11
A recently published patent (https://www.ipo.gov.uk/p-ipsum/Case/PublicationNumber/GB2590064) has claimed the development of a novel quantum key distribution protocol purporting to…
Riemannian optimization of photonic quantum circuits in phase and Fock space
Yuan Yao, Filippo Miatto, Nicolás Quesada
We propose a framework to design and optimize generic photonic quantum circuits composed of Gaussian objects (pure and mixed Gaussian states, Gaussian unitaries, Gaussian channels,…
Tight analytic bound on the trade-off between device-independent randomness and nonlocality
Lewis Wooltorton, Peter Brown, Roger Colbeck
Two parties sharing entangled quantum systems can generate correlations that cannot be produced using only shared classical resources. These nonlocal correlations are a fundamental…
Quantum computation capability verification protocol for NISQ devices with dihedral coset problem
Ruge Lin, Weiqiang Wen
In this article, we propose an interactive protocol for one party (the verifier) holding a quantum computer to verify the quantum computation power of another party's (the prover)…