Quantum Speed Limit and Nonclassicality in Open Quantum System Models Using the Wigner Function
Sign Up to like & getrecommendations! Published in 2024 at "Annalen der Physik"
DOI: 10.1002/andp.202400194
Abstract: The quantum speed limit and the Wigner function of open system models are studied. To this end, the phase covariant and a two‐qubit model interacting with a squeezed thermal bath via position‐dependent coupling are used.… read more here.
Keywords: quantum speed; speed limit; wigner function; system models ... See more keywords
Quantum Speed Limit of a Two-Level System Interacting with Multiple Bosonic Reservoirs
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-019-04325-y
Abstract: A physical model for a two-level atom simultaneously coupled to multiple Bosonic reservoirs is investigated. The explicit expression of quantum speed limit is obtained. Analysis show that as long as the number of reservoirs satisfies… read more here.
Keywords: quantum speed; two level; system; multiple bosonic ... See more keywords
Quantum Speed Limits in Qubit Dynamics Driven by Bistable Random Telegraph Noise: From Markovian to Non-Markovian Regimes
Sign Up to like & getrecommendations! Published in 2025 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-025-06192-2
Abstract: The quantum speed-limit (QSL) time of a single superconducting qubit subject to pure dephasing by bistable random telegraph noise (RTN) is examined. Non-Markovianity is quantified using a coherence-based measure, and the unified QSL time for… read more here.
Keywords: markovian non; bistable random; non markovian; quantum speed ... See more keywords
Quantum speed-up in global optimization of binary neural nets
Sign Up to like & getrecommendations! Published in 2020 at "New Journal of Physics"
DOI: 10.1088/1367-2630/abc9ef
Abstract: The performance of a neural network (NN) for a given task is largely determined by the initial calibration of the network parameters. Yet, it has been shown that the calibration, also referred to as training,… read more here.
Keywords: quantum speed; network; network parameters; global optimization ... See more keywords
Tightening of quantum speed limit bound and tracing back information under non-Markovian dynamics
Sign Up to like & getrecommendations! Published in 2025 at "Physica Scripta"
DOI: 10.1088/1402-4896/addafb
Abstract: Quantum theory sets a fundamental bound for the minimal time evolution between initial and final state of a system . This bound is called quantum speed limit time , which is used to quantify the… read more here.
Keywords: limit time; quantum speed; speed limit;
Controlling the quantum speed limit time for unital maps via filtering operations
Sign Up to like & getrecommendations! Published in 2020 at "Laser Physics Letters"
DOI: 10.1088/1612-202x/abac15
Abstract: The minimum time a system needs to change from an initial state to a final orthogonal state is called quantum speed limit time. Quantum speed limit time can be used to quantify the speed of… read more here.
Keywords: quantum speed; time; limit time; speed limit ... See more keywords
Thermodynamics and the quantum speed limit in the non-Markovian regime
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review A"
DOI: 10.1103/physreva.104.042202
Abstract: Quantum speed limit (QSL) for open quantum systems in the non-Markovian regime is analyzed. We provide a lower bound for the time required to transform an initial state to a final state in terms of… read more here.
Keywords: non markovian; thermodynamics; speed limit; markovian regime ... See more keywords
Quantum speed limits for implementation of unitary transformations
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review A"
DOI: 10.1103/physreva.110.042611
Abstract: Quantum speed limits are the boundaries that define how quickly one quantum state can transform into another. Instead of focusing on the transformation between pairs of states, we provide bounds on the speed limit of… read more here.
Keywords: unitary transformations; implementation unitary; quantum speed; limits implementation ... See more keywords
Quenching a quantum critical state by the order parameter: Dynamical quantum phase transitions and quantum speed limits
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.060504
Abstract: Quantum critical states exhibit strong quantum fluctuations and are therefore highly susceptible to perturbations. In this work we study the dynamical stability against a sudden coupling to these strong fluctuations by quenching the order parameter… read more here.
Keywords: quantum speed; quantum; dynamical quantum; quantum critical ... See more keywords
Quantum Speed Limit is Not Quantum.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.120.070402
Abstract: The quantum speed limit (QSL), or the energy-time uncertainty relation, describes the fundamental maximum rate for quantum time evolution and has been regarded as being unique in quantum mechanics. In this study, we obtain a… read more here.
Keywords: quantum speed; limit; mechanics; speed limit ... See more keywords
Distinct Bound of the Quantum Speed Limit via the Gauge Invariant Distance.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.123.180403
Abstract: We derive a distinct bound of the quantum speed limit for a non-Hermitian quantum system by employing the gauge invariant and geometric natures of quantum mechanics. The bound is of geometric properties since it relates… read more here.
Keywords: quantum speed; distinct bound; bound quantum; gauge invariant ... See more keywords