Tunable coupling scheme for implementing two-qubit gates on fluxonium qubits

I. N. Moskalenko; I. S. Besedin; I. A. Simakov; A. V. Ustinov

doi:10.1063/5.0064800

Tunable Coupling Scheme for Implementing High-Fidelity Two-Qubit Gates

Physical Review Applied ◽

10.1103/physrevapplied.10.054062 ◽

2018 ◽

Vol 10 (5) ◽

Cited By ~ 23

Author(s):

Fei Yan ◽

Philip Krantz ◽

Youngkyu Sung ◽

Morten Kjaergaard ◽

Daniel L. Campbell ◽

...

Keyword(s):

Coupling Scheme ◽

High Fidelity ◽

Tunable Coupling

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Tunable coupling scheme for flux qubits at the optimal point

Physical Review B ◽

10.1103/physrevb.73.094506 ◽

2006 ◽

Vol 73 (9) ◽

Cited By ~ 70

Author(s):

Antti O. Niskanen ◽

Yasunobu Nakamura ◽

Jaw-Shen Tsai

Keyword(s):

Coupling Scheme ◽

Optimal Point ◽

Flux Qubits ◽

Tunable Coupling

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Reciprocal Polarizable Embedding with a Transferable H2O Potential Function II: Application to (H2O)n Clusters & Liquid Water

10.26434/chemrxiv.9224483 ◽

2019 ◽

Author(s):

Asmus Ougaard Dohn ◽

Elvar Jónsson ◽

Hannes Jonsson

Keyword(s):

Density Functional Theory ◽

Liquid Water ◽

Density Functional ◽

Water Clusters ◽

Theory Model ◽

Coupling Scheme ◽

Functional Theory ◽

Total Polarization ◽

Electrostatic Embedding ◽

Polarizable Embedding

The manuscript analyzes the accuracy of our recently developed reciprocal polarizable embedding scheme, where a density functional theory model of the QM region is coupled to a dipole- and quadrupole polarizable water potential of the MM region. We present calculations of water clusters and liquid water where we analyze the energy, atomic forces and total polarization to demonstrate that artifacts in energy and polarization introduced by the QM/MM coupling are small and well-behaved. Furthermore, our methodology improves the consistency of the structure of optimized water hexamer geometries when compared to results obtained with models that neglect polarization. Additionally, the manuscript provides evidence that our coupling scheme eliminates artifacts in the structure of liquid water obtained with simpler electrostatic embedding models.

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SKETCH-N/ATHLET steady-state and dynamic coupling scheme verification on Kalinin-3 benchmark results

Kerntechnik ◽

10.3139/124.200021 ◽

2020 ◽

Vol 85 (4) ◽

pp. 265-273 ◽

Cited By ~ 3

Author(s):

V. I. Romanenko ◽

V. G. Zimin ◽

S. P. Nikonov ◽

G. V. Tikhomirov ◽

Y. Perin ◽

...

Keyword(s):

Steady State ◽

Coupling Scheme ◽

Dynamic Coupling

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Convenient Synthesis of (Z)-7- and (E)-9-dodecene-1-yl Acetate, Components of Some Lepidoptera Insect Sex Pheromone

Revista de Chimie ◽

10.37358/rc.17.1.5415 ◽

2017 ◽

Vol 68 (1) ◽

pp. 180-185

Author(s):

Adriana Maria Andreica ◽

Lucia Gansca ◽

Irina Ciotlaus ◽

Ioan Oprean

Keyword(s):

Sex Pheromone ◽

Coupling Reaction ◽

Coupling Scheme ◽

Lithium Aluminium Hydride ◽

Terminal Alkyne ◽

Mercury Derivative ◽

Lithium Aluminium ◽

Convenient Synthesis ◽

Practical Synthesis ◽

Insect Sex

Were developed new and practical synthesis of (Z)-7-dodecene-1-yl acetate and (E)-9-dodecene-1-yl acetate. The routes involve, as the key step, the use of the mercury derivative of the terminal-alkyne w-functionalised as intermediate. The synthesis of (Z)-7-dodecene-1-yl acetate was based on a C6+C2=C8 and C8+C4=C12 coupling scheme, starting from 1,6-hexane-diol. The first coupling reaction took place between 1-tert-butoxy-6-bromo-hexane and lithium acetylide-ethylendiamine complex obtaining 1-tert-butoxy-oct-7-yne, which is transformed in di[tert-butoxy-oct-7-yne]mercury. The mercury derivative was directly lithiated and then alkylated with 1-bromobutane obtaining 1-tert-butoxy-dodec-7-yne. After acetylation and reduction with lithium aluminium hydride of 7-dodecyne-1-yl acetate gave (Z)-7-dodecene-1-yl acetate with 96 % purity. The synthesis of (E)-9-dodecene-1-yl acetate was based on a C8+C2=C10 and C10+C2=C12 coupling scheme, starting from 1,8-octane-diol. The first coupling reaction took place between 1-tert-butoxy-8-bromo-octane and lithium acetylide-ethylendiamine complex obtaining 1-tert-butoxy-dec-9-yne, which is transformed in di[tert-butoxy-dec-9-yne]mercury. The mercury derivative was directly lithiated and then alkylated with 1-bromoethane obtaining 1-tert-butoxy-dodec-9-yne. After reduction with lithium aluminium hydride of 1-tert-butoxy-(E)-9-dodecene and acetylation was obtained (E)-9-dodecene-1-yl acetate with 97 % purity.

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Design of large mode area all-solid anti-resonant fiber for high-power lasers

High Power Laser Science and Engineering ◽

10.1017/hpl.2021.7 ◽

2021 ◽

Vol 9 ◽

Author(s):

Xin Zhang ◽

Shoufei Gao ◽

Yingying Wang ◽

Wei Ding ◽

Pu Wang

Keyword(s):

High Power ◽

Single Mode ◽

Higher Order ◽

Coupling Scheme ◽

Resonant Coupling ◽

Higher Order Modes ◽

Mode Loss ◽

Fiber Mode ◽

Power Needs ◽

Mode Area

Abstract High-power fiber lasers have experienced a dramatic development over the last decade. Further increasing the output power needs an upscaling of the fiber mode area, while maintaining a single-mode output. Here, we propose an all-solid anti-resonant fiber (ARF) structure, which ensures single-mode operation in broadband by resonantly coupling higher-order modes into the cladding. A series of fibers with core sizes ranging from 40 to 100 μm are proposed exhibiting maximum mode area exceeding 5000 μm2. Numerical simulations show this resonant coupling scheme provides a higher-order mode (mainly TE01, TM01, and HE21) suppression ratio of more than 20 dB, while keeping the fundamental mode loss lower than 1 dB/m. The proposed structure also exhibits high tolerance for core index depression.

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Extending the temperature sensing range using Eu3+ luminescence up to 865 K in a single crystal of EuPO4

Physical Chemistry Chemical Physics ◽

10.1039/c9cp03501j ◽

2019 ◽

Vol 21 (29) ◽

pp. 16329-16336 ◽

Cited By ~ 7

Author(s):

Suchinder K. Sharma ◽

Thomas Köhler ◽

Jan Beyer ◽

Margret Fuchs ◽

Richard Gloaguen ◽

...

Keyword(s):

Single Crystal ◽

Temperature Sensing ◽

Single Crystal Sample ◽

Coupling Scheme ◽

Excitation Wavelength ◽

Crystal Sample ◽

Sensing Range

Extending the temperature sensing range up to 865 K using an appropriate choice of excitation wavelength and coupling scheme in a single crystal sample of EuPO4.

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Sideband-resolved resonator electromechanics based on a nonlinear Josephson inductance probed on the single-photon level

Communications Physics ◽

10.1038/s42005-020-00501-3 ◽

2020 ◽

Vol 3 (1) ◽

Author(s):

Philip Schmidt ◽

Mohammad T. Amawi ◽

Stefan Pogorzalek ◽

Frank Deppe ◽

Achim Marx ◽

...

Keyword(s):

Quantum Interference ◽

Electromechanical Coupling ◽

Single Photon ◽

Capacitive Coupling ◽

Inductive Coupling ◽

Coupling Scheme ◽

Strong Coupling Regime ◽

Coupling Rate ◽

Light Matter Interaction ◽

Microwave Regime

AbstractLight-matter interaction in optomechanical systems is the foundation for ultra-sensitive detection schemes as well as the generation of phononic and photonic quantum states. Electromechanical systems realize this optomechanical interaction in the microwave regime. In this context, capacitive coupling arrangements demonstrated interaction rates of up to 280 Hz. Complementary, early proposals and experiments suggest that inductive coupling schemes are tunable and have the potential to reach the single-photon strong-coupling regime. Here, we follow the latter approach by integrating a partly suspended superconducting quantum interference device (SQUID) into a microwave resonator. The mechanical displacement translates into a time varying flux in the SQUID loop, thereby providing an inductive electromechanical coupling. We demonstrate a sideband-resolved electromechanical system with a tunable vacuum coupling rate of up to 1.62 kHz, realizing sub-aN Hz−1/2 force sensitivities. The presented inductive coupling scheme shows the high potential of SQUID-based electromechanics for targeting the full wealth of the intrinsically nonlinear optomechanics Hamiltonian.

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