Elementary solution to the time-independent quantum navigation problem
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Abstract
A quantum navigation problem concerns the identification of a time-optimal Hamiltonian that realises a required quantum process or task, under the influence of a prevailing `background' Hamiltonian that cannot be manipulated. When the task is to transform one quantum state into another, finding the solution in closed form to the problem is nontrivial even in the case of time-independent Hamiltonians. An elementary solution, based on trigonometric analysis, is found here when the Hilbert space dimension is two. Difficulties arising from generalisations to higher-dimensional systems are discussed.Keywords
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This publication has 15 references indexed in Scilit:
- Zermelo navigation in the quantum brachistochroneJournal of Physics A: Mathematical and Theoretical, 2015
- Time-optimal control of SU(2) quantum operationsPhysical Review A, 2013
- Geometric Methods for Analysing Quantum Speed Limits: Time-Dependent Controlled Quantum Systems with Constrained Control FunctionsLecture Notes in Computer Science, 2013
- Time-optimal unitary operationsPhysical Review A, 2007
- On optimum Hamiltonians for state transformationsJournal of Physics A: General Physics, 2006
- Quantum limits to dynamical evolutionPhysical Review A, 2003
- Elementary derivation for passage timesJournal of Physics A: General Physics, 2003
- Sub-Riemannian geometry and time optimal control of three spin systems: Quantum gates and coherence transferPhysical Review A, 2002
- Ultimate physical limits to computationNature, 2000
- The maximum speed of dynamical evolutionPhysica D: Nonlinear Phenomena, 1998