Results 31 to 40 of about 1,071,813 (330)
Auger Recombination in Semiconductor Quantum Wells [PDF]
, 1998 The principal mechanisms of Auger recombination of nonequilibrium carriers in semiconductor heterostructures with quantum wells are investigated. It is shown for the first time that there exist three fundamentally different Auger recombination mechanisms
A. Haug +33 more
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Dephasing effect promotes the appearance of quantized Hall plateaus
New Journal of Physics, 2023 The quantum Hall effect (QHE) is a topologically protected phenomenon which has been observed in various systems. In experiments, the size of Hall bar device to realize the QHE is generally much larger than the phase coherence length, in which the ...
Jing-Yun Fang, Ai-Min Guo, Qing-Feng Sun
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Choi's Proof and Quantum Process Tomography [PDF]
, 2002 Quantum process tomography is a procedure by which an unknown quantum operation can be fully experimentally characterized. We reinterpret Choi's proof of the fact that any completely positive linear map has a Kraus representation [Lin. Alg. and App., 10,
Childs +17 more
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Thermodynamic Implementations of Quantum Processes [PDF]
Communications in Mathematical Physics, 2021 AbstractRecent understanding of the thermodynamics of small-scale systems have enabled the characterization of the thermodynamic requirements of implementing quantum processes for fixed input states. Here, we extend these results to construct optimal universal implementations of a given process, that is, implementations that are accurate for any ...
Philippe Faist +2 more
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Quantum-Information Processing in Semiconductor Quantum Dots [PDF]
physica status solidi (b), 2001 3 ...
Filippo Troiani +2 more
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Real-Time Experimental Measurement of Swept Source VCSEL Properties Relevant to OCT Imaging
IEEE Photonics Journal, 2017 A real-time study of the dynamic properties of a frequency swept vertical cavity surface emitting laser (VCSEL) is presented. Such tunable laser sources have previously been shown to provide long coherence lengths and improved performance in metrology ...
T. P. Butler +6 more
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Quantum Process Tomography: Resource Analysis of Different Strategies [PDF]
, 2007 Characterization of quantum dynamics is a fundamental problem in quantum physics and quantum information science. Several methods are known which achieve this goal, namely Standard Quantum Process Tomography (SQPT), Ancilla-Assisted Process Tomography ...
A. S. Holevo +14 more
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Verification of Linear Optical Quantum Computing using Quantum Process Calculus [PDF]
Electronic Proceedings in Theoretical Computer Science, 2014 We explain the use of quantum process calculus to describe and analyse linear optical quantum computing (LOQC). The main idea is to define two processes, one modelling a linear optical system and the other expressing a specification, and prove that they ...
Sonja Franke-Arnold +2 more
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Quantum stochastic processes III [PDF]
Communications in Mathematical Physics, 1970 We investigate properties of a class of quantum stochastic processes subject to a condition of irreducibility. These processes must be recurrent or transient and an equilibrium state can only exist in the former case. Every finite dimensional process is recurrent and it is possible to establish convergence in time to a unique equilibrium state.
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Results in Physics, 2021 The strong and collective atom–light interactions in cavity-QED systems perform manifold benefits in quantum-enhanced measurements. Here, we study the time-reversal protocol that has been proposed to sense small displacements of the light field, and ...
Yuguo Su, Xiaoguang Wang
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