Results 1 to 10 of about 171,009 (266)
Quantum control using quantum memory. [PDF]
Sci Rep, 2020 AbstractWe propose a new quantum numerical scheme to control the dynamics of a quantum walker in a two dimensional space–time grid. More specifically, we show how, introducing a quantum memory for each of the spatial grid, this result can be achieved simply by acting on the initial state of the whole system, and therefore can be exactly controlled once
Roget M, Herzog B, Di Molfetta G.
europepmc +6 more sources
Quantum ergotropy and quantum feedback control
Physical Review E, 2023 11 pages, 7 ...
Kenta Koshihara, Kazuya Yuasa
openaire +3 more sources
npj Quantum Information, 2021 Twin-field (TF) quantum key distribution (QKD) is highly attractive because it can beat the fundamental limit of secret key rate for point-to-point QKD without quantum repeaters.
Xiaoqing Zhong +3 more
doaj +1 more source
Quantum Crosstalk Robust Quantum Control
Physical Review Letters, 2023 The prevalence of quantum crosstalk in current quantum devices poses challenges for achieving high-fidelity quantum logic operations and reliable quantum processing. Through quantum control theory, we develop an analytical condition for achieving crosstalk-robust single-qubit control of multi-qubit systems.
Zeyuan Zhou +4 more
openaire +3 more sources
CONTROL OF QUANTUM SYSTEMS [PDF]
International Journal of Modern Physics B, 2002 A quantum system subject to external fields is said to be controllable if these fields can be adjusted to guide the state vector to a desired destination in the state space of the system. Fundamental results on controllability are reviewed against the background of recent ideas and advances in two seemingly disparate endeavours: (i) laser control of ...
Clark, John W. +2 more
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Nanomaterials, 2023 Low-voltage Zn-doped CuI thin film transistors (TFTs) gated by chitosan dielectric were fabricated at a low temperature. The Zn-doped CuI TFT exhibited a more superior on/off current ratio than CuI TFT due to the substitution or supplementation of copper
Xiaomin Gan +9 more
doaj +1 more source
npj Quantum Information, 2021 Despite tremendous theoretical and experimental progress in continuous variable (CV) quantum key distribution (QKD), the security has not been rigorously established for most current continuous variable quantum key distribution systems that have ...
Chenyang Li, Li Qian, Hoi-Kwong Lo
doaj +1 more source
LIMITATIONS ON QUANTUM CONTROL [PDF]
International Journal of Modern Physics B, 2002 In this note we give an introduction to the topic of Quantum Control, explaining what its objectives are, and describing some of its limitations.
Solomon, Allan I., Schirmer, Sonia G.
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Transparent qubit manipulations with spin-orbit coupled two-electron nanowire quantum dot
Scientific Reports, 2021 We report on the first set of exact orthonormalized states to an ac driven one-dimensional (1D) two-electron nanowire quantum dot with the Rashba–Dresselhaus coexisted spin-orbit coupling (SOC) and the controlled magnetic field orientation and trapping ...
Kuo Hai +3 more
doaj +1 more source
Efficient experimental quantum fingerprinting with channel multiplexing and simultaneous detection
Nature Communications, 2021 Quantum fingerprinting could allow an exponential quantum advantage in a cryptographic protocol, but current schemes are still difficult to scale. Here, the authors exploit wavelength division multiplexing to increase the channel capacity and reduce the ...
Xiaoqing Zhong +3 more
doaj +1 more source