Results 51 to 60 of about 224,909 (273)
64-qubit quantum circuit simulation [PDF]
Science Bulletin, 2018 Classical simulations of quantum circuits are limited in both space and time when the qubit count is above 50, the realm where quantum supremacy reigns. However, recently, for the low depth circuit with more than 50 qubits, there are several methods of simulation proposed by teams at Google and IBM.
Chen, Zhao-Yun +5 more
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Optimization schemes for unitary tensor-network circuit
Physical Review Research, 2021 An efficient representation of a quantum circuit is of great importance in achieving a quantum advantage on current noisy intermediate scale quantum (NISQ) devices and the classical simulation of quantum many-body systems.
Reza Haghshenas
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A simple encoding of a quantum circuit amplitude as a matrix permanent
, 2009 A simple construction is presented which allows computing the transition amplitude of a quantum circuit to be encoded as computing the permanent of a matrix which is of size proportional to the number of quantum gates in the circuit.
C. D. Godsil +5 more
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Coulomb Drag in Quantum Circuits [PDF]
Physical Review Letters, 2008 We study drag effect in a system of two electrically isolated quantum point contacts (QPC), coupled by Coulomb interactions. Drag current exhibits maxima as a function of QPC gate voltages when the latter are tuned to the transitions between quantized conductance plateaus.
Levchenko, Alex, Kamenev, Alex
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Variational quantum circuits for quantum state tomography [PDF]
Physical Review A, 2020 Quantum state tomography is a key process in most quantum experiments. In this work, we employ quantum machine learning for state tomography. Given an unknown quantum state, it can be learned by maximizing the fidelity between the output of a variational quantum circuit and this state.
Yong Liu +11 more
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Strong hole-photon coupling in planar Ge for probing charge degree and strongly correlated states
Nature CommunicationsSemiconductor quantum dots (QDs) in planar germanium (Ge) heterostructures have emerged as front-runners for future hole-based quantum processors. Here, we present strong coupling between a hole charge qubit, defined in a double quantum dot (DQD) in ...
Franco De Palma +9 more
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Fast reconstruction algorithm based on HMC sampling
Scientific Reports, 2023 In Noisy Intermediate-Scale Quantum (NISQ) era, the scarcity of qubit resources has prevented many quantum algorithms from being implemented on quantum devices. Circuit cutting technology has greatly alleviated this problem, which allows us to run larger
Hang Lian +5 more
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Improved Low-Depth SHA3 Quantum Circuit for Fault-Tolerant Quantum Computers
Applied Sciences, 2023 To build a secure cryptography system in the post-quantum era, one must find the minimum security parameters against quantum attacks by estimating the quantum resources of a fault-tolerant quantum computer.
Gyeongju Song +2 more
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Quantum Information Processing15 pages, 16 ...
Daniel Tandeitnik, Thiago Guerreiro
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Quantum interference in plasmonic circuits [PDF]
Nature Nanotechnology, 2013 Surface plasmon polaritons (plasmons) are a combination of light and a collective oscillation of the free electron plasma at metal-dielectric interfaces. This interaction allows sub-wavelength confinement of light, beyond the diffraction limit inherent to dielectric structures.
Heeres, Reinier W. +2 more
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