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Notch filters for port-Hamiltonian systems

D. A. Dirksz, J. M. A. Scherpen, A. J. van der Schaft, M. Steinbuch
2012 2012 American Control Conference (ACC)  
In this paper a standard notch filter is modeled in the port-Hamiltonian framework. By having such a port-Hamiltonian description it is proven that the notch filter is a passive system.  ...  The notch filter can then be interconnected with another (nonlinear) port-Hamiltonian system, while preserving the overall passivity property.  ...  This paper describes a standard notch filter in the port-Hamiltonian form.  ... 
doi:10.1109/acc.2012.6315150 fatcat:dmgytu6e4je7dian24clb3q6wu

Notch Filters for Port-Hamiltonian Systems

D. A. Dirksz, J. M. A. Scherpen, A. J. van der Schaft, M. Steinbuch
2015 IEEE Transactions on Automatic Control  
In this paper a standard notch filter is modeled in the port-Hamiltonian framework. By having such a port-Hamiltonian description it is proven that the notch filter is a passive system.  ...  The notch filter can then be interconnected with another (nonlinear) port-Hamiltonian system, while preserving the overall passivity property.  ...  This paper describes a standard notch filter in the port-Hamiltonian form.  ... 
doi:10.1109/tac.2015.2390552 fatcat:o4ccpkngjnhuvi7ctesnnbgazy

Experimental study of a subsystem in an entangled two-photon state

Dmitry V. Strekalov, Yoon-Ho Kim, Yanhua Shih
1999 Physical Review A. Atomic, Molecular, and Optical Physics  
, that is, obtaining mixed states out of pure states in a Hamiltonian system.  ...  The zero entropy condition for a system in a pure state reflects the fact that the quantum state ͉⌿͘ provides a complete description of the system.  ... 
doi:10.1103/physreva.60.2685 fatcat:xht73zq7ozfmzdjqeuysppd7dq

A Cooper-Pair Box Coupled to Two Resonators: An Architecture for a Quantum Refrigerator [article]

Andrew Guthrie, Christoforus Dimas Satrya, Yu-Cheng Chang, Paul Menczel, Franco Nori, Jukka P. Pekola
2022 arXiv   pre-print
We thank VTT Technical Research Center for sputtered Nb films.  ...  Neill Lambert and Ilari Mäkinen for technical support and insightful discussions. This work is financially supported through the Foundational Questions Institute Fund (FQXi) via Grant No.  ...  (c) Transmission spectra, S21, between port 1 and port 2 for driving freqencies f drive 0.1-14 GHz.  ... 
arXiv:2109.03023v2 fatcat:zy4daxvv6bccreuvkcr7qymr7a

Quality factor of a transmission line coupled coplanar waveguide resonator

Ilya Besedin, Alexey P Menushenkov
2018 EPJ Quantum Technology  
The obtained analytical results are relevant for designing circuit-QED quantum systems and frequency division multiplexing of superconducting bolometers, detectors and similar microwave-range multi-pixel  ...  Leading order terms for the external quality factor and frequency shift are calculated.  ...  Ustinov for sharing his comments on an early version of the manuscript, and V. Chichkov, G. Fedorov, I.  ... 
doi:10.1140/epjqt/s40507-018-0066-3 fatcat:rqq7uuog5fasdicrns7ohdbxze

Topologically Protecting Squeezed Light on a Photonic Chip [article]

Ruo-Jing Ren, Yong-Heng Lu, Ze-Kun Jiang, Jun Gao, Wen-Hao Zhou, Yao Wang, Zhi-Qiang Jiao, Xiao-Wei Wang, Alexander S. Solntsev, Xian-Min Jin
2021 arXiv   pre-print
For the construction of large-scale quantum systems performing many-photon operations, it is essential to integrate various functional modules on a chip.  ...  The demonstration of topological protection for squeezed light on a chip brings new opportunities for quantum integrated photonics, opening novel approaches for the design of advanced multi-photon circuits  ...  The authors thank Jian-Wei Pan for helpful discussions.  ... 
arXiv:2106.07425v1 fatcat:nnwwekr3wjbc5iu7xi5yhi7k6a

Control Design, Analysis and Testing of a Three-phase VSI using IDA-PBC Approach

Yusuf Gupta, Kishore Chatterjee, Suryanarayana Doolla
2019 IET Power Electronics  
It is shown that in the case of accurately known filter parameters and perfectly zero initial conditions, theoretically, the voltage controller would exhibit unity voltage gain and zero output impedance  ...  The presented analysis and the proposed tuning method for controller gain have been tested through simulation studies.  ...  A physics-based non-linear modelling approach known as port-Hamiltonian (pH) modelling is the base of the IDA-PBC method.  ... 
doi:10.1049/iet-pel.2019.0553 fatcat:3t3zzcsvxzchzhongl32b76lry

Robust strong coupling architecture in circuit quantum electrodynamics [article]

Rishabh Upadhyay, George Thomas, Yu-Cheng Chang, Dmitry S. Golubev, Andrew Guthrie, Azat Gubaydullin, Joonas T. Peltonen, Jukka P. Pekola
2021 arXiv   pre-print
We derive an analytical expression for the coupling strength in terms of circuit parameters and also discuss the maximum achievable coupling within this framework.  ...  Our framework is useful for quantum thermodynamic experiments since the heat current is proportional to the square of the coupling between a qubit and the resonator employed for spectral filtering 28,  ...  The total Hamiltonian of the system is given as H = H res + H loop + H int , where that of the resonator in terms of the ladder operators (a n , a † n ) and frequency of the nth mode ω n is H res = ∞ n  ... 
arXiv:2107.11135v1 fatcat:2aeoee7msjd7jp6vpeu4xqtari

Quantum dynamics of simultaneously measured non-commuting observables

Shay Hacohen-Gourgy, Leigh S. Martin, Emmanuel Flurin, Vinay V. Ramasesh, K. Birgitta Whaley, Irfan Siddiqi
2016 Nature  
As physical systems often interact continuously with their environment via non-commuting degrees of freedom, our work offers a way to study how notions of contemporary quantum foundations arise in such  ...  In quantum mechanics, measurements cause wavefunction collapse that yields precise outcomes, for non-commuting observables such as position and momentum Heisenberg's uncertainty principle limits the intrinsic  ...  The output is followed by an amplifier model ZRON8G+ and then passed through a home built notch filter which attenuates the carrier by ∼ 25 dB relative to the sideband tones.  ... 
doi:10.1038/nature19762 pmid:27706145 fatcat:zxzz35ytenefdb5pzonmnqwbya

Quantum Nondemolition Measurement of a Quantum Squeezed State Beyond the 3 dB Limit

C. U. Lei, A. J. Weinstein, J. Suh, E. E. Wollman, A. Kronwald, F. Marquardt, A. A. Clerk, K. C. Schwab
2016 Physical Review Letters  
Our measurements also reveal evidence for an additional mechanical parametric effect.  ...  We use a reservoir engineering technique based on two-tone driving to generate and stabilize a quantum squeezed state of a micron-scale mechanical oscillator in a microwave optomechanical system.  ...  The device studied in this work is a two ports optomechanical system. Microwave tones are applied from the left port, which we designate (L).  ... 
doi:10.1103/physrevlett.117.100801 pmid:27636463 fatcat:ql2aocsly5fghbz6fixib4rdge

Fast readout and reset of a superconducting qubit coupled to a resonator with an intrinsic Purcell filter [article]

Yoshiki Sunada, Shingo Kono, Jesper Ilves, Shuhei Tamate, Takanori Sugiyama, Yutaka Tabuchi, Yasunobu Nakamura
2022 arXiv   pre-print
We use this "intrinsic Purcell filter" to demonstrate a 40-ns readout with 99.1% fidelity and a 100-ns reset with residual excitation of less than 1.7%.  ...  Further investigation is needed on the effect of the notch-like filtering on π pulses applied through the filter.  ...  This is especially problematic around the notch of our filter, where the real part approaches zero.  ... 
arXiv:2202.06202v1 fatcat:ojx5cyjnjzhy3kf2qjp6l4ovb4

Quantum squeezing of motion in a mechanical resonator

E. E. Wollman, C. U. Lei, A. J. Weinstein, J. Suh, A. Kronwald, F. Marquardt, A. A. Clerk, K. C. Schwab
2015 Science  
This work is relevant to the quantum engineering of states of matter at large length scales, the study of decoherence of large quantum systems, and for the realization of ultra-sensitive sensing of force  ...  In this work, using microwave frequency radiation pressure, we both prepare a micron-scale mechanical system in a state near the quantum ground state and then manipulate its thermal fluctuations to produce  ...  The filter cavities have two ports, and thus can either be used as transmission, band-pass filters or the second port can be shorted, and the reflected signal can be picked off with a circulator for a  ... 
doi:10.1126/science.aac5138 pmid:26315431 fatcat:w4xzpdbfgjho3ai7onhb6222s4

Direct generation of tunable orbital angular momentum beams in microring lasers with broadband exceptional points [article]

William E. Hayenga, Jinhan Ren, Midya Parto, Fan Wu, Mohammad P. Hokmabadi, Christian Wolff, Ramy El-Ganainy, N. Asger Mortensen, Demetrios N. Christodoulides, Mercedeh Khajavikhan
2019 arXiv   pre-print
As of now, however, in order to stabilize a system at the vicinity of an exceptional point, its related parameters must be carefully tuned and/or continuously controlled.  ...  In active settings, the resulting unidirectionality exhibits unprecedented resilience to perturbations, thus providing a robust and tunable approach for directly generating beams with distinct orbital  ...  port.  ... 
arXiv:1903.10108v1 fatcat:zb7oeyyqabfnpaux5blfx4w7fm

Topological photonic crystals: physics, designs and applications [article]

Guo-Jing Tang, Xin-Tao He, Fu-Long Shi, Jian-Wei Liu, Xiao-Dong Chen, Jian-Wen Dong
2022 arXiv   pre-print
For example, a narrowband flattop reflection filter is in need for achieving the wavelength sensitivity in wavelength-division multiplexing systems [311] .  ...  Optical filters play an important role in communication systems.  ... 
arXiv:2201.06294v1 fatcat:vvzzbtjvkvatdnjgwgovkncoaa

Dual-Resonator Kinetic-Inductance Detector for Distinction between Signal and 1/f Frequency Noise [article]

N. Foroozani, B. Sarabi, S. H. Moseley, T. Stevenson, E. J. Wollack, O. Noroozian, K. D. Osborn
2022 arXiv   pre-print
In the theory, based on a quantum-information-science modes, we calculate the 4-port S parameters and simulate the 1/f frequency noise of the device.  ...  Here we present a Dual-Resonator KID (DuRKID), which is designed for improved signal to noise (or noise equivalent power) relative to 1/f-noise limited KIDs.  ...  Wustmann for scientific discussions. This work was funded through a NASA Science Innovation Fund (SIF) award and the Intelligence Community Postdoctoral Fellowship Award.  ... 
arXiv:2202.11310v2 fatcat:tasggm4tjrahfb47ehd53ueq4m
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