Results 11 to 20 of about 27,988 (262)
Hamiltonian transformability, fast adiabatic dynamics and hidden adiabaticity [PDF]
Scientific Reports, 2021 AbstractWe prove the existence of a unitary transformation that enables two arbitrarily given Hamiltonians in the same Hilbert space to be transformed into one another. The result is straightforward yet, for example, it lays the foundation to implementing or mimicking dynamics with the most controllable Hamiltonian.
Lian-Ao Wu, Dvira Segal
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Journal of Statistical Physics, 1998 We study a general quantum system interacting with environment modeled by the bosonic heat bath of Caldeira and Leggett type. General interaction Hamiltonians are considered that commute with the system's Hamiltonian so that there is no energy exchange between the system and bath.
Mozyrsky, Dima, Privman, Vladimir
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Shortcuts to Adiabaticity [PDF]
, 2013 54 pages, 1 ...
Torrontegui, E. +8 more
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Adiabatic Markovian Dynamics [PDF]
Physical Review Letters, 2010 We propose a theory of adiabaticity in quantum Markovian dynamics based on a decomposition of the Hilbert space induced by the asymptotic behavior of the Lindblad semigroup. A central idea of our approach is that the natural generalization of the concept of eigenspace of the Hamiltonian in the case of Markovian dynamics is a noiseless subsystem with a ...
Oreshkov, Ognyan, Calsamiglia, J.
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De-Signing Hamiltonians for Quantum Adiabatic Optimization [PDF]
Quantum, 2020 Quantum fluctuations driven by non-stoquastic Hamiltonians have been conjectured to be an important and perhaps essential missing ingredient for achieving a quantum advantage with adiabatic optimization.
Elizabeth Crosson +3 more
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Design of Programmable LED Controller with a Variable Current Source for 3D Image Display
Information, 2014 Conventional fluorescent light sources, as well as incandescent light sources are gradually being replaced by Light Emitting Diodes (LEDs) for reducing power consumption in the image display area for multimedia application. An LED light source requires a
Kyung-Ryang Lee +3 more
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Adiabatic operation slope-loss algorithm for ultrashort and broadband waveguide taper
Frontiers in Physics, 2022 In this paper, an adiabatic operation slope-loss algorithm (AO-SLA) is developed for designing efficient adiabatic waveguide tapers. The algorithm can compute the efficient adiabatic guided-wave shape of the waveguide taper.
Tu-Lu Liang +9 more
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Numerical Method for the Design of Compact Adiabatic Devices with Multiple Parameter Variations
Photonics, 2023 In this study, a numerical method for designing efficient adiabatic devices with multiple structural parameter variations (NAMSP) is developed. This method can be applied to a wide range of devices based on adiabatic mode evolution structures.
Tu-Lu Liang +7 more
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Adiabatic theorem revisited: The unexpectedly good performance of adiabatic passage [PDF]
Physical Review A, 2021 Adiabatic passage employs a slowly varying time-dependent Hamiltonian to control the evolution of a quantum system along the Hamiltonian eigenstates. For processes of finite duration, the exact time evolving state may deviate from the adiabatic eigenstate at intermediate times, but in numerous applications it is observed that this deviation reaches a ...
Benseny, Albert, Mølmer, Klaus
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Counterdiabaticity and the quantum approximate optimization algorithm [PDF]
Quantum, 2022 The quantum approximate optimization algorithm (QAOA) is a near-term hybrid algorithm intended to solve combinatorial optimization problems, such as MaxCut. QAOA can be made to mimic an adiabatic schedule, and in the $p\to\infty$ limit the final state is
Jonathan Wurtz, Peter J. Love
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