Zobrazeno 1 - 10
of 124
pro vyhledávání: '"D'antonio, Anna"'
Gaussian states of bosonic quantum systems enjoy numerous technological applications and are ubiquitous in nature. Their significance lies in their simplicity, which in turn rests on the fact that they are uniquely determined by two experimentally ac
Externí odkaz:
http://arxiv.org/abs/2411.02368
Efficiently learning expectation values of a quantum state using classical shadow tomography has become a fundamental task in quantum information theory. In a classical shadows protocol, one measures a state in a chosen basis $\mathcal{W}$ after it h
Externí odkaz:
http://arxiv.org/abs/2410.23481
Free-fermionic states, also known as fermionic Gaussian states, represent an important class of quantum states ubiquitous in physics. They are uniquely and efficiently described by their correlation matrix. However, in practical experiments, the corr
Externí odkaz:
http://arxiv.org/abs/2409.17953
A unitary state $t$-design is an ensemble of pure quantum states whose moments match up to the $t$-th order those of states uniformly sampled from a $d$-dimensional Hilbert space. Typically, unitary state $t$-designs are obtained by evolving some ref
Externí odkaz:
http://arxiv.org/abs/2409.16500
Autor:
Mele, Francesco Anna, Mele, Antonio Anna, Bittel, Lennart, Eisert, Jens, Giovannetti, Vittorio, Lami, Ludovico, Leone, Lorenzo, Oliviero, Salvatore F. E.
Quantum state tomography, aimed at deriving a classical description of an unknown state from measurement data, is a fundamental task in quantum physics. In this work, we analyse the ultimate achievable performance of tomography of continuous-variable
Externí odkaz:
http://arxiv.org/abs/2405.01431
Autor:
Mele, Antonio Anna, Angrisani, Armando, Ghosh, Soumik, Khatri, Sumeet, Eisert, Jens, França, Daniel Stilck, Quek, Yihui
Motivated by realistic hardware considerations of the pre-fault-tolerant era, we comprehensively study the impact of uncorrected noise on quantum circuits. We first show that any noise `truncates' most quantum circuits to effectively logarithmic dept
Externí odkaz:
http://arxiv.org/abs/2403.13927
The experimental realization of increasingly complex quantum states underscores the pressing need for new methods of state learning and verification. In one such framework, quantum state tomography, the aim is to learn the full quantum state from dat
Externí odkaz:
http://arxiv.org/abs/2402.18665
Schemes of classical shadows have been developed to facilitate the read-out of digital quantum devices, but similar tools for analog quantum simulators are scarce and experimentally impractical. In this work, we provide a measurement scheme for fermi
Externí odkaz:
http://arxiv.org/abs/2309.12933
Autor:
Mele, Antonio Anna
Publikováno v:
Quantum 8, 1340 (2024)
The Haar measure plays a vital role in quantum information, but its study often requires a deep understanding of representation theory, posing a challenge for beginners. This tutorial aims to provide a basic introduction to Haar measure tools in quan
Externí odkaz:
http://arxiv.org/abs/2307.08956
Saddle points constitute a crucial challenge for first-order gradient descent algorithms. In notions of classical machine learning, they are avoided for example by means of stochastic gradient descent methods. In this work, we provide evidence that t
Externí odkaz:
http://arxiv.org/abs/2210.06723