Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Raam Uzdin"'
Publikováno v:
npj Quantum Information, Vol 10, Iss 1, Pp 1-11 (2024)
Abstract The conventional circuit paradigm, utilizing a small set of gates to construct arbitrary quantum circuits, is hindered by significant noise. In the quantum Fourier transform, for instance, the standard gate paradigm employs two CNOT gates fo
Externí odkaz:
https://doaj.org/article/edced09a54c442979e7ae2879c83f2ef
Publikováno v:
npj Quantum Information, Vol 9, Iss 1, Pp 1-10 (2023)
Abstract Quantum Error Mitigation (QEM) enables the extraction of high-quality results from the presently-available noisy quantum computers. In this approach, the effect of the noise on observables of interest can be mitigated using multiple measurem
Externí odkaz:
https://doaj.org/article/ddcf46287c8d43f9a7029d53130e262c
Publikováno v:
Quantum, Vol 6, p 682 (2022)
Periodically-driven systems are ubiquitous in science and technology. In quantum dynamics, even a small number of periodically-driven spins leads to complicated dynamics. Hence, it is of interest to understand what constraints such dynamics must sati
Externí odkaz:
https://doaj.org/article/9b86ceadf828434599dbcec752cb8bf3
Autor:
Ivan Henao, Raam Uzdin
Publikováno v:
Quantum, Vol 5, p 547 (2021)
The laws of thermodynamics are usually formulated under the assumption of infinitely large environments. While this idealization facilitates theoretical treatments, real physical systems are always finite and their interaction range is limited. These
Externí odkaz:
https://doaj.org/article/ac7de8a4d14f42e39d77aa4ac16f9022
Autor:
Raam Uzdin, Saar Rahav
Publikováno v:
PRX Quantum, Vol 2, Iss 1, p 010336 (2021)
Recently implemented quantum devices such as quantum processors and quantum simulators combine highly complicated quantum dynamics with high-resolution measurements. We present a passivity deformation methodology that sets constraints on the evolutio
Externí odkaz:
https://doaj.org/article/8fb77853e0c94eb29e1af6c01c6482e7
Autor:
Martí Perarnau-Llobet, Raam Uzdin
Publikováno v:
New Journal of Physics, Vol 21, Iss 8, p 083023 (2019)
We consider work extraction from N copies of a quantum system. When the same work-extraction process is implemented on each copy, the relative size of fluctuations is expected to decay as $1/\sqrt{N}$ . Here, we consider protocols where the copies ca
Externí odkaz:
https://doaj.org/article/20844ff224dc4582b41db7d05a02544d
Autor:
Raam Uzdin, Saar Rahav
Publikováno v:
Physical Review X, Vol 8, Iss 2, p 021064 (2018)
The main thread that links classical thermodynamics and the thermodynamics of small quantum systems is the celebrated Clausius inequality form of the second law. However, its application to small quantum systems suffers from two cardinal problems. (i
Externí odkaz:
https://doaj.org/article/6bbaca91a05d4db6a8362ded8e64d7b6
Publikováno v:
New Journal of Physics, Vol 20, Iss 6, p 063030 (2018)
Thermal Markovian dynamics is typically obtained by coupling a system to a sufficiently hot bath with a large heat capacity. Here we present a scheme for inducing Markovian dynamics using an arbitrarily small and cold heat bath. The scheme is based o
Externí odkaz:
https://doaj.org/article/7b10ba3a685c47168f7662d3f5126d52
Publikováno v:
Physical Review X, Vol 5, Iss 3, p 031044 (2015)
Quantum heat engines (QHE) are thermal machines where the working substance is a quantum object. In the extreme case, the working medium can be a single particle or a few-level quantum system. The study of QHE has shown a remarkable similarity with m
Externí odkaz:
https://doaj.org/article/1f0d5d032884483cb6966d077d7e1a67
Autor:
Raam Uzdin, Ronnie Kosloff
Publikováno v:
New Journal of Physics, Vol 16, Iss 9, p 095003 (2014)
A multilevel four-stroke engine where the thermalization strokes are generated by unitary collisions with thermal bath particles is analyzed. Our model is solvable even when the engine operates far from thermal equilibrium and in the strong system–
Externí odkaz:
https://doaj.org/article/2c33d4e43b014f49a482177288299170