Zobrazeno 1 - 10
of 154
pro vyhledávání: '"Dominique Sugny"'
Publikováno v:
Entropy, Vol 25, Iss 5, p 790 (2023)
Quantum control of lossy systems is known to be achieved by adiabatic passage via an approximate dark state relatively immune to loss, such as the emblematic example of stimulated Raman adiabatic passage (STIRAP) featuring a lossy excited state. By s
Externí odkaz:
https://doaj.org/article/01d6a98b43354c8ea0c1621dedc68a9e
Publikováno v:
Entropy, Vol 25, Iss 3, p 446 (2023)
We investigate the extent to which a two-level quantum system subjected to an external time-dependent drive can be characterized by supervised learning. We apply this approach to the case of bang-bang control and the estimation of the offset and the
Externí odkaz:
https://doaj.org/article/3bafea6eae564ec58507b70abc5b0110
Publikováno v:
Molecules, Vol 26, Iss 10, p 2860 (2021)
We study the application of Optimal Control Theory to Ion Cyclotron Resonance. We test the validity and the efficiency of this approach for the robust excitation of an ensemble of ions with a wide range of cyclotron frequencies. Optimal analytical so
Externí odkaz:
https://doaj.org/article/8d24d551dcc443b5883aedb193cc9e62
Publikováno v:
Pacific Journal of Mathematics for Industry, Vol 9, Iss 1, Pp 1-10 (2017)
Abstract We apply innovative mathematical tools coming from optimal control theory to improve theoretical and experimental techniques in Magnetic Resonance Imaging (MRI). This approach allows us to explore and to experimentally reach the physical lim
Externí odkaz:
https://doaj.org/article/24e2ea3b30d94c2397672597461b779d
Publikováno v:
Physical Review Research, Vol 3, Iss 1, p 013110 (2021)
Qubit reset is a key task in the operation of quantum devices which, for many quantum hardware platforms, presently limits device clock speed. While it is known that coupling the qubit to an ancilla on demand allows for the fastest qubit reset, the l
Externí odkaz:
https://doaj.org/article/92d50ea7bd3c4005b883954a466a6e10
Publikováno v:
New Journal of Physics, Vol 19, Iss 11, p 113042 (2017)
Fast and reliable reset of a qubit is a key prerequisite for any quantum technology. For real world open quantum systems undergoing non-Markovian dynamics, reset implies not only purification, but in particular erasure of initial correlations between
Externí odkaz:
https://doaj.org/article/6f38e9edc9e743de922dc51aee1028ac
Publikováno v:
Advances in Mathematical Physics, Vol 2012 (2012)
We present a geometric framework to analyze optimal control problems of uncoupled spin 1/2 particles occurring in nuclear magnetic resonance. According to the Pontryagin's maximum principle, the optimal trajectories are solutions of a pseudo-Hamilton
Externí odkaz:
https://doaj.org/article/2f3f77b2e22c4419bab0c70d43d9c0e5
Publikováno v:
Physical Review A. 105
We investigate the generation of non-classical states of spins coupled to a common cavity by means of a collective driving of the spins. We propose a control strategy using specifically designed series of short coherent and squeezing pulses, which ha
We present a theoretical study of the optimal control of a qubit interacting with a structured environment. We consider a model system in which the bath is a bosonic reservoir at zero temperature and the qubit frequency is the only control parameter.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61ed8aef08d8f57b85c23ae50f9a7102
Publikováno v:
Phys.Rev.A
Phys.Rev.A, 2021, 104, ⟨10.1103/PhysRevA.104.042226⟩
Phys.Rev.A, 2021, 104, ⟨10.1103/PhysRevA.104.042226⟩
We apply the Small Tip-Angle Approximation in the Toggling Frame in order to analytically design robust pulses against resonance offsets for state to state transfer in two-level quantum systems. We show that a broadband or a local robustness up to an