Results 1 to 10 of about 3,578 (70)
Non-Markovian decoherence in the adiabatic quantum search algorithm [PDF]
, 2006 We consider an adiabatic quantum algorithm (Grover's search routine) weakly coupled to a rather general environment, i.e., without using the Markov approximation.
A. M. Childs +2 more
core +2 more sources
, 2015 Smoothing is an estimation method whereby a classical state (probability distribution for classical variables) at a given time is conditioned on all-time (both past and future) observations.
Guevara, Ivonne, Wiseman, Howard
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Loss of coherence in double-slit diffraction experiments [PDF]
, 2016 7 págs.; 3 figs.; PACS numberssd: 03.65.Yz, 03.65.Ta, 03.75.DgThe effects of incoherence and decoherence in a double-slit experiment are studied using both optical and quantum-phenomenological models.
Bastiaans, M. J. +2 more
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Connection between decoherence and excited state quantum phase transitions [PDF]
, 2009 In this work we explore the relationship between an excited state quantum phase transition (ESQPT) and the phenomenon of quantum decoherence. For this purpose, we study how the decoherence is affected by the presence of a continuous ESQPT in the ...
Arias Carrasco, José Miguel +4 more
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Quantum jumps are more quantum than quantum diffusion
New Journal of Physics, 2014 It was recently argued (Wiseman and Gambetta 2012 Phys. Rev. Lett. http://dx.doi.org/10.1103/PhysRevLett.108.220402 108 http://dx.doi.org/10.1103/PhysRevLett.108.220402 ) that the stochastic dynamics (jumps or diffusion) of an open quantum system are not
Shakib Daryanoosh, Howard M Wiseman
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Sequential measurements of non-commuting observables with quantum controlled interactions
New Journal of Physics, 2014 The origin of non-classical correlations is difficult to identify since the uncertainty principle requires that information obtained about one observable invariably results in the disturbance of any other non-commuting observable.
Holger F Hofmann
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Generating and protecting correlated quantum states under collective dephasing
New Journal of Physics, 2016 We study the collective dephasing process of a system of non-interacting atomic qubits, immersed in a spatially uniform magnetic field of fluctuating intensity.
Edoardo G Carnio +2 more
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Dynamical decoupling leads to improved scaling in noisy quantum metrology
New Journal of Physics, 2016 We consider the usage of dynamical decoupling in quantum metrology, where the joint evolution of system plus environment is described by a Hamiltonian. We show that by ultra-fast unitary control operations acting locally only on system qubits, noise can ...
Pavel Sekatski +2 more
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Disturbance-based measure of macroscopic coherence
New Journal of Physics, 2017 We propose a measure of macroscopic coherence based on the degree of disturbance caused by a coarse-grained measurement. Based on our measure, we point out that recently proposed criteria of macroscopic coherence may lead to inconsistent results when ...
Hyukjoon Kwon +3 more
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Qubit state tomography in a superconducting circuit via weak measurements
New Journal of Physics, 2017 In this work we present a study on a new scheme for measuring the qubit state in a circuit quantum electrodynamics (QED) system, based on weak measurement and the concept of weak value. To be applicable under generic parameter conditions, our formulation
Lupei Qin +3 more
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