Results 1 to 10 of about 820,757 (187)
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 Control Landscapes [PDF]
International Reviews in Physical Chemistry, 2007 Numerous lines of experimental, numerical and analytical evidence indicate that it is surprisingly easy to locate optimal controls steering quantum dynamical systems to desired objectives.
Agrachev AA +5 more
core +2 more sources
Quantum control by compensation of quantum fluctuations [PDF]
Optics Express, 1998 We show that the influence of quantum fluctuations in the electromagnetic field vacuum on a two level atom can be measured and consequently compensated by balanced homodyne detection and a coherent feedback field.
Aharonov +10 more
core +4 more sources
Quantum control and quantum information technology. [PDF]
ScientificWorldJournal, 2013 Quantum information technology has been recognized as one of the most promising future technologies (e.g., see [1]). The development of quantum control theory is a key task for practical quantum information technology (e.g., see [2–4]. Recent advances in quantum information technologies and robust quantum information processing require the dynamics of ...
Dong D, Chen C, Jiang M, Wang LC.
europepmc +4 more sources
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
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
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
Quantum ergotropy and quantum feedback control
Physical Review E, 2023 We study the energy extraction from and charging to a finite-dimensional quantum system by general quantum operations. We prove that the changes in energy induced by unital quantum operations are limited by the ergotropy/charging bound for unitary quantum operations.
Kenta Koshihara, Kazuya Yuasa
openaire +3 more sources
INCOHERENT QUANTUM CONTROL [PDF]
Quantum Probability and Related Topics, 2008 Contribution to the 28-th Conference on Quantum Probability and Related Topics, CIMAT-Guanajuato, MEXICO, 2-8 September 2007 (final version, minor editing)
Pechen, Alexander, Rabitz, Herschel
openaire +2 more sources
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