Search Results - "Lukens, J. E."

Quantum superposition of distinct macroscopic states by Friedman, Jonathan R, Patel, Vijay, Chen, W, Tolpygo, S. K, Lukens, J. E

“…In 1935, Schrödinger attempted to demonstrate the limitations of quantum mechanics using a thought experiment in which a cat is put in a quantum superposition…”
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Rapid single flux quantum T-flip flop operating up to 770 GHz by Chen, W., Rylyakov, A.V., Patel, V., Lukens, J.E., Likharev, K.K.

“…Rapid Single Flux Quantum (RSFQ) T-flip flops (TFFs) operating up to 770 GHz have been demonstrated at 4.2 K. The devices, consisting of either resistively…”
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Effect of measurement on the periodicity of the Coulomb staircase of a superconducting box by Männik, J, Lukens, J E

“…We report on the effect of the backaction of a single Cooper pair transistor electrometer (E) on the charge state of a superconducting box (B). The charge is e…”
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Superconductor digital frequency divider operating up to 750 GHz by Chen, W., Rylyakov, A. V., Patel, Vijay, Lukens, J. E., Likharev, K. K.

“…A superconductor frequency divider based on rapid single flux quantum (RSFQ) logic has been demonstrated to operate from dc to 750 GHz with an error rate less…”
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Generation of a population inversion between quantum states of a macroscopic variable by Han, S, Rouse, R, Lukens, JE

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Crossover from Kramers to phase-diffusion switching in moderately damped Josephson junctions by MÄNNIK, J, LI, S, QIU, W, CHEN, W, PATEL, V, HAN, S, LUKENS, J. E

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Flux amplification using stochastic superconducting quantum interference devices by Rouse, R., Han, Siyuan, Lukens, J. E.

“…The flux change δ Φ through a bistable superconducting quantum interference device has been measured in the presence of thermally induced switching (with rate…”
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Interband Transitions and Band Gap Measurements in Bloch Transistors by Flees, Daniel J., Han, Siyuan, Lukens, J. E.

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Observation of strong Coulomb blockade in resistively isolated tunnel junctions by Zheng, Wei, Friedman, J.R., Averin, D.V., Han, Siyuan, Lukens, J.E.

“…We report measurements of the Coulomb-blockade current in resistively isolated ( R Isol ≫ h/ e 2) tunnel junctions for the temperature range 60 mK <T<230 mK…”
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Observation of incoherent relaxation by tunneling in a macroscopic two-state system by HAN, S, LAPOINTE, J, LUKENS, J. E

“…The dynamics of a dissipative, quantized macroscopic two-state system have been experimentally investigated through the measurement of tunneling transitions…”
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Thermal activation in a two-dimensional potential by HAN, S, LAPOINTE, J, LUKENS, J. E

“…Measurements have been made of the transition rates between fluxoid states of a system with two Josephson junctions having two macroscopic degrees of freedom…”
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Tunneling properties of barriers in Nb/Al/AlOx/Nb junctions by TOLPYGO, S. K, CIMPOIASU, E, LIU, X, SIMONIAN, N, POLYAKOV, Yu. A, LUKENS, J. E, LIKHAREV, K. K

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Quantitative study of the effect of the environment on macroscopic quantum tunneling by SCHWARTZ, D. B, SEN, B, ARCHIE, C. N, LUKENS, J. E

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High-speed single-flux-quantum circuit using planarized niobium-trilayer Josephson junction technology by Bunyk, P. I., Oliva, A., Semenov, V. K., Bhushan, M., Likharev, K. K., Lukens, J. E., Ketchen, M. B., Mallison, W. H.

“…A simple test circuit of the rapid single-flux-quantum (RSFQ) logic family has been implemented in a planarized all-refractory technology using only two…”
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Development toward high-speed integrated circuits and SQUID qubits with Nb/AlOx/Nb Josephson junctions by CHEN, W, PATEL, Vijay, TOLPYGO, Sergey K, YOHANNES, D, POTTORF, S, LUKENS, J. E

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Fabrication of high-quality Josephson junctions for quantum computation using a self-aligned process by WEI CHEN, PATEL, Vijay, LUKENS, J. E

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Submillimeter wave generation using Josephson junction arrays by WAN, K, JAIN, A. K, LUKENS, J. E

“…Arrays of phase-locked Josephson junctions have been developed and tested which deliver over 1 μW of power, via superconducting microstrip, to loads with…”
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Measurement of single electron lifetimes in a multijunction trap by Dresselhaus, PD, Ji, L, Han, S, Lukens, JE, Likharev, KK

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Off-chip detection of radiation from a linear array oscillator with a spiral antenna by Kiryu, S., Wenxing Zhang, Siyuan Han, Deus, S., Lukens, J.E.

“…Radiation from a linear array oscillator with a spiral antenna has been measured using an off-chip coupled bolometer. The array oscillator has a distributed…”
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Observation of Resonant Tunneling between Macroscopically Distinct Quantum Levels by Rouse, R, Han, S, Lukens, JE

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