Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Prahlad Warszawski"'
Publikováno v:
PRX Quantum, Vol 4, Iss 4, p 040340 (2023)
State smoothing is a technique to estimate a state at a particular time, conditioned on information obtained both before (past) and after (future) that time. For a classical system, the smoothed state is a normalized product of the filtered state (a
Externí odkaz:
https://doaj.org/article/6a0c2cfabb0e4ea9922579255465382b
Autor:
Prahlad Warszawski, Howard M. Wiseman
Publikováno v:
Quantum, Vol 3, p 192 (2019)
For a Markovian (in the strongest sense) open quantum system it is possible, by continuously monitoring the environment, to perfectly track the system; that is, to know the stochastically evolving pure state of the system without altering the master
Externí odkaz:
https://doaj.org/article/bf2d50b931d641f291281b0de317db7a
Autor:
Prahlad Warszawski, Howard M Wiseman
Publikováno v:
New Journal of Physics, Vol 21, Iss 5, p 053006 (2019)
A D -dimensional Markovian open quantum system will undergo stochastic evolution which preserves pure states, if one monitors without loss of information the bath to which it is coupled. If a finite ensemble of pure states satisfies a particular set
Externí odkaz:
https://doaj.org/article/a197ab70f18b45aaa4c14fc5b5691bd1
We study solutions to the quantum trajectory evolution of $N$-mode open quantum systems possessing a time-independent Hamiltonian, linear Heisenberg-picture dynamics, and Gaussian measurement noise. In terms of the mode annihilation and creation oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::526377d042015bdf1e95a560a2793fe6
http://arxiv.org/abs/2004.02387
http://arxiv.org/abs/2004.02387
We propose a protocol for quantum state tomography of nonclassical states in optomechanical systems. Using a parametric drive, the procedure overcomes the challenges of weak optomechanical coupling, poor detection efficiency, and thermal noise to ena
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1841346b2400f8485aaecabed2172ec
http://arxiv.org/abs/1811.08444
http://arxiv.org/abs/1811.08444
Autor:
Howard M. Wiseman, Prahlad Warszawski
Publikováno v:
Quantum, Vol 3, p 192 (2019)
For a Markovian open quantum system it is possible, by continuously monitoring the environment, to know the stochastically evolving pure state of the system without altering the master equation. In general, even for a system with a finite Hilbert spa
Autor:
Howard M. Wiseman, Prahlad Warszawski
Publikováno v:
New Journal of Physics. 21:053006
A $D$-dimensional Markovian open quantum system will undergo stochastic evolution which preserves pure states, if one monitors without loss of information the bath to which it is coupled. If a finite ensemble of pure states satisfies a particular set
Publikováno v:
Physical Review A. 69
We investigate the effect of imperfections in realistic detectors upon the problem of quantum state and parameter estimation by continuous monitoring of an open quantum system. Specifically, we have reexamined the system of a two-level atom with an u
We present a new model for the continuous measurement of a coupled quantum dot charge qubit. We model the effects of a realistic measurement, namely adding noise to, and filtering, the current through the detector. This is achieved by embedding the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b052afc2221bc559702e9fd7eb470fd
Publikováno v:
Scopus-Elsevier
Quantum trajectories describe the stochastic evolution of an open quantum system conditioned on continuous monitoring of its output, such as by an ideal photodetector. Here we derive (non-Markovian) quantum trajectories for realistic photodetection,