Quasienergy and Floquet states in a time-periodic driven two-level system

1994 ◽  
Vol 49 (23) ◽  
pp. 16753-16756 ◽  
Author(s):  
Xian-Geng Zhao
Keyword(s):  
Level System ◽  
Time Periodic ◽  
Floquet States

Floquet states and geometrical phase of a multi-level system in cyclic evolution

2008 ◽  
Vol 372 (17) ◽  
pp. 3071-3077
Author(s):  
Yi Gao ◽  
Shi-Jie Xiong ◽  
Yan-Ming Zhong
Keyword(s):  
Level System ◽  
Geometrical Phase ◽  
Multi Level ◽  
Floquet States

scholarly journals Variational principle for time-periodic quantum systems

2020 ◽  
Vol 75 (10) ◽  
pp. 855-861
Author(s):  
Nils Krüger
Keyword(s):  
Variational Principle ◽  
Numerical Methods ◽  
Solvable Model ◽  
Quantum Systems ◽  
Time Dependent ◽  
High Dimensional ◽  
Benchmark System ◽  
Time Periodic ◽  
Very High ◽  
Floquet States

AbstractA variational principle enabling one to compute individual Floquet states of a periodically time-dependent quantum system is formulated, and successfully tested against the benchmark system provided by the analytically solvable model of a linearly driven harmonic oscillator. The principle is particularly well suited for tracing individual Floquet states through parameter space, and may allow one to obtain Floquet states even for very high-dimensional systems which cannot be treated by the known standard numerical methods.

scholarly journals Floquet maser

2021 ◽  
Vol 7 (8) ◽  
pp. eabe0719 ◽  
Author(s):  
Min Jiang ◽  
Haowen Su ◽  
Ze Wu ◽  
Xinhua Peng ◽  
Dmitry Budker
Keyword(s):  
Dark Matter ◽  
Magnetic Fields ◽  
State Of The Art ◽  
Low Frequency ◽  
Atomic Clocks ◽  
Periodically Driven ◽  
Time Periodic ◽  
Better Than ◽  
Time Crystals ◽  
Floquet States

The invention of the maser stimulated revolutionary technologies such as lasers and atomic clocks. Yet, realizations of masers are still limited; in particular, the physics of masers remains unexplored in periodically driven (Floquet) systems, which are generally defined by time-periodic Hamiltonians and enable observation of many exotic phenomena such as time crystals. Here, we investigate the Floquet system of periodically driven 129Xe gas under damping feedback and unexpectedly observe a multimode maser that oscillates at frequencies of transitions between Floquet states. Our findings extend maser techniques to Floquet systems and open avenues to probe Floquet phenomena unaffected by decoherence, enabling a previously unexplored class of maser sensors. As a first application, our maser offers the capability of measuring low-frequency (1 to 100 mHz) magnetic fields with subpicotesla-level sensitivity, which is substantially better than state-of-the-art magnetometers and can be applied to, for example, ultralight dark matter searches.

Chaotic mixing and heat transfer in time-periodic 3-D Stokes flows

2002 ◽  
Author(s):  
Antonio Jose Silveiro Rodrigo ◽  
Jose Paulo Barbosa Mota ◽  
Esteban Saatdjian
Keyword(s):  
Heat Transfer ◽  
Chaotic Mixing ◽  
Stokes Flows ◽  
Time Periodic
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