Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Sentís, Gael"'
Autor:
Llorens, Santiago, González, Walther, Sentís, Gael, Calsamiglia, John, Bagan, Emili, Muñoz-Tapia, Ramon
This paper introduces quantum edge detection, aimed at locating boundaries of quantum domains where all particles share the same pure state. Focusing on the 1D scenario of a string of particles, we develop an optimal protocol for quantum edge detecti
Externí odkaz:
http://arxiv.org/abs/2405.11373
Publikováno v:
Quantum 8, 1452 (2024)
A source assumed to prepare a specified reference state sometimes prepares an anomalous one. We address the task of identifying these anomalous states in a series of $n$ preparations with $k$ anomalies. We analyze the minimum-error protocol and the z
Externí odkaz:
http://arxiv.org/abs/2312.13020
Publikováno v:
New J. Phys. 25 113018 (2023)
The quantum state associated to an unknown experimental preparation procedure can be determined by performing quantum state tomography. If the statistical uncertainty in the data dominates over other experimental errors, then a tomographic reconstruc
Externí odkaz:
http://arxiv.org/abs/2303.07136
Publikováno v:
Europhysics Letters (2022)
Operating quantum sensors and quantum computers would make data in the form of quantum states available for purely quantum processing, opening new avenues for studying physical processes and certifying quantum technologies. In this Perspective, we re
Externí odkaz:
http://arxiv.org/abs/2210.11850
We introduce a family of highly symmetric bipartite quantum states in arbitrary dimensions. It consists of all states that are invariant under local phase rotations and local cyclic permutations of the basis. We solve the separability problem for a s
Externí odkaz:
http://arxiv.org/abs/2202.11033
We investigate the relative volume of parent Hamiltonians having a target ground state up to some fixed error $\epsilon$, a quantity which sets a benchmark on the performance of quantum simulators. For vanishing error, this relative volume is of meas
Externí odkaz:
http://arxiv.org/abs/2111.13734
Publikováno v:
Quantum 6, 658 (2022)
We consider online strategies for discriminating between symmetric pure states with zero error when $n$ copies of the states are provided. Optimized online strategies involve local, possibly adaptive measurements on each copy and are optimal at each
Externí odkaz:
http://arxiv.org/abs/2107.02127
Autor:
Martínez-Vargas, Esteban, Hirche, Christoph, Sentís, Gael, Skotiniotis, Michalis, Carrizo, Marta, Muñoz-Tapia, Ramon, Calsamiglia, John
Publikováno v:
Phys. Rev. Lett. 126, 180502 (2021)
We introduce sequential analysis in quantum information processing, by focusing on the fundamental task of quantum hypothesis testing. In particular our goal is to discriminate between two arbitrary quantum states with a prescribed error threshold, $
Externí odkaz:
http://arxiv.org/abs/2011.10773
Publikováno v:
Phys. Rev. X 9, 041029 (2019)
We introduce the problem of unsupervised classification of quantum data, namely, of systems whose quantum states are unknown. We derive the optimal single-shot protocol for the binary case, where the states in a disordered input array are of two type
Externí odkaz:
http://arxiv.org/abs/1903.01391
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