Results 11 to 20 of about 38,231 (311)
Quantum circuit unoptimization
Physical Review ResearchOptimization of circuits is an essential task for both quantum and classical computers to improve their efficiency. In contrast, classical logic optimization is known to be difficult, and a lot of heuristic approaches have been developed so far.
Yusei Mori +5 more
doaj +3 more sources
Circuit quantum electrodynamics [PDF]
Reviews of Modern Physics, 2021 Quantum mechanical effects at the macroscopic level were first explored in Josephson junction-based superconducting circuits in the 1980's. In the last twenty years, the emergence of quantum information science has intensified research toward using these circuits as qubits in quantum information processors.
Alexandre Blais +3 more
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Triunitary quantum circuits [PDF]
Physical Review Research, 2021 We introduce a novel class of quantum circuits that are unitary along three distinct "arrows of time". These dynamics share some of the analytical tractability of "dual-unitary" circuits, while exhibiting distinctive and richer phenomenology. We find that two-point correlations in these dynamics are strictly confined to three directions in $(1+1 ...
Cheryne Jonay +2 more
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Quantum-circuit black hole lasers. [PDF]
Sci Rep, 2021 AbstractA black hole laser in analogues of gravity amplifies Hawking radiation, which is unlikely to be measured in real black holes, and makes it observable. There have been proposals to realize such black hole lasers in various systems. However, no progress has been made in electric circuits for a long time, despite their many advantages such as high-
Katayama H.
europepmc +6 more sources
Quantum Circuit Architecture [PDF]
Physical Review Letters, 2008 10 eps figures + Qcircuit ...
CHIRIBELLA, GIULIO +2 more
openaire +5 more sources
Quantum circuit learning [PDF]
Physical Review A, 2018 We propose a classical-quantum hybrid algorithm for machine learning on near-term quantum processors, which we call quantum circuit learning. A quantum circuit driven by our framework learns a given task by tuning parameters implemented on it. The iterative optimization of the parameters allows us to circumvent the high-depth circuit.
Mitarai, K. +3 more
openaire +3 more sources
Quantum circuit design search [PDF]
Quantum Machine Intelligence, 2021 This article explores search strategies for the design of parameterized quantum circuits. We propose several optimization approaches including random search plus survival of the fittest, reinforcement learning both with classical and hybrid quantum classical controllers and Bayesian optimization as decision makers to design a quantum circuit in an ...
Mohammad Pirhooshyaran, Tamás Terlaky
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NONUNITARY QUANTUM CIRCUIT [PDF]
International Journal of Quantum Information, 2005 A quantum circuit is generalized to a nonunitary one whose constituents are nonunitary gates operated by quantum measurement. It is shown that a specific type of one-qubit nonunitary gates, the controlled-NOT gate, and all one-qubit unitary gates constitute a universal set of gates for the nonunitary quantum circuit, without the necessity of ...
Terashima, Hiroaki, Ueda, Masahito
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Proceedings of the 54th Annual ACM SIGACT Symposium on Theory of Computing, 2022 66 pages. Updated the erroneous claim from v1 about the complexity of information-theoretic QRE as matching the classical case.
Brakerski, Zvika, Yuen, Henry
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Categorical quantum circuits [PDF]
Journal of Physics A: Mathematical and Theoretical, 2011 25 pages, 20 figures.
Bergholm, Ville, Biamonte, Jacob D.
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