Results 1 to 10 of about 828,437 (187)

Quantum Processors and Controllers [PDF]

open access: yes2003 IEEE International Workshop on Workload Characterization (IEEE Cat. No.03EX775), 2003
In this paper is presented an abstract theory of quantum processors and controllers, special kind of quantum computational network defined on a composite quantum system with two parts: the controlling and controlled subsystems.
Vlasov, Alexander Yu.
core   +7 more sources

Quantum control by compensation of quantum fluctuations [PDF]

open access: yesOptics 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

Proof-of-principle experimental demonstration of twin-field quantum key distribution over optical channels with asymmetric losses

open access: yesnpj 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

Low-Voltage Solution-Processed Zinc-Doped CuI Thin Film Transistors with NOR Logic and Artificial Synaptic Function

open access: yesNanomaterials, 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

Simple security proofs for continuous variable quantum key distribution with intensity fluctuating sources

open access: yesnpj 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

Quantum control theory and applications: A survey [PDF]

open access: yes, 2010
This paper presents a survey on quantum control theory and applications from a control systems perspective. Some of the basic concepts and main developments (including open-loop control and closed-loop control) in quantum control theory are reviewed.
Belavkin   +20 more
core   +1 more source

Transparent qubit manipulations with spin-orbit coupled two-electron nanowire quantum dot

open access: yesScientific 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

Observation-assisted optimal control of quantum dynamics [PDF]

open access: yes, 2006
This paper explores the utility of instantaneous and continuous observations in the optimal control of quantum dynamics. Simulations of the processes are performed on several multilevel quantum systems with the goal of population transfer.
Alexander Pechen   +8 more
core   +2 more sources

Efficient experimental quantum fingerprinting with channel multiplexing and simultaneous detection

open access: yesNature 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

Robust control in the quantum domain [PDF]

open access: yes, 2000
Recent progress in quantum physics has made it possible to perform experiments in which individual quantum systems are monitored and manipulated in real time. The advent of such new technical capabilities provides strong motivation for the development of
Doherty, Andrew   +4 more
core   +2 more sources

Home - About - Disclaimer - Privacy